Nickel-Catalyzed Asymmetric Allylic Alkylation of β-Dicarbonyl Compounds via C–C Bond Activation of 2-Allylated Cyclic 1,3-Diketones

Kosuke Higashida, Valentin Smaïl, Haruki Nagae, Jean-Francois Carpentier, Kazushi Mashima

ACS Catalysis　p. 2156-2161　2023/01/25　Research paper (scientific journal)

Continuous Plug Flow Process for the Transesterification of Methyl Acrylate and 1,4-Butanediol by a Zn-Immobilized Catalyst for Producing 4-Hydroxybutyl Acrylate

Taito Kato, Haruki Nagae, Koji Yonehara, Tomoyuki Kitano, Hiroki Nagashima, Shinji Tanaka, Tomoharu Oku, Kazushi Mashima

Industrial & Engineering Chemistry Research　Vol. 61　No. 51　p. 18625-18635　2022/12/28　Research paper (scientific journal)

Syntheses and Redox Properties of Carboxylate-Ligated Hexanuclear Ce(IV) Clusters and Their Photoinduced Homolysis of the Ce(IV)-Ligand Covalent Bond.

Tomomi Kawakami, Sota Tamaki, Satoru Shirase, Hayato Tsurugi, Kazushi Mashima

Inorganic chemistry　Vol. 61　No. 50　p. 20461-20471　2022/12/19　Research paper (scientific journal)

Early transition metal complexes for direct C H bond functionalization of heteroatom-containing organic compounds

Mariko Inoue, Hayato Tsurugi, Kazushi Mashima

Coordination Chemistry Reviews　Vol. 473　p. 214810-214810　2022/12　Research paper (scientific journal)

Pyrazine Alkylation with Aldehydes and Haloalkanes Using N,N’ ‐Bis(trimethylsilyl)‐1,4‐dihydropyrazine Derivatives

Hayato Tsurugi, Minami Matsuno, Tomomi Kawakami, Kazushi Mashima

European Journal of Organic Chemistry　Vol. 2022　No. 41　2022/11/07　Research paper (scientific journal)

Chain Transfer Approach for Terminal Functionalization of Alternating Copolymerization of CO2 and Epoxide by Using Active Methylene Compounds as Chain Transfer Agents

Haruki Nagae, Shin-ya Akebi, Saki Matsushiro, Kazutaka Sakamoto, Takanori Iwasaki, Kyoko Nozaki, Kazushi Mashima

Macromolecules　2022/10/11　Research paper (scientific journal)

N-Methylation of Aniline Derivatives with CO₂ and Phenylsilane Catalyzed by Lanthanum Hydridotriarylborate Complexes bearing a Nitrogen Tridentate Ligand

Koichi Shinohara, Hayato Tsurugi, Kazushi Mashima

ACS Catalysis　Vol. 12　No. 14　p. 8220-8228　2022/07/15　Research paper (scientific journal)

Diarylcuprates for Selective Syntheses of Multifunctionalized Ketones from Thioesters under Mild Conditions

Daiki Kato, Tomoya Murase, Jalindar Talode, Haruki Nagae, Hayato Tsurugi, Masahiko Seki, Kazushi Mashima

Chemistry – A European Journal　Vol. 28　No. 26　2022/05/06　Research paper (scientific journal)

Olefin Metathesis Catalysts Generated In Situ from Molybdenum(VI)‐Oxo Complexes by Tuning Pendant Ligands

Darryl F. Nater, Christoph J. Kaul, Lukas Lätsch, Hayato Tsurugi, Kazushi Mashima, Christophe Copéret

Chemistry – A European Journal　Vol. 28　No. 22　2022/04/19　Research paper (scientific journal)

Diagonal Relationship among Organometallic Transition-Metal Complexes

Kazushi Mashima

Organometallics　Vol. 40　No. 21　p. 3497-3505　2021/11/08　Research paper (scientific journal)

Aerobic oxygenation of α-methylene ketones under visible-light catalysed by a CeNi3 complex with a macrocyclic tris(salen)-ligand.

Haruki Nagae, Kazutaka Sakamoto, Sakiko Fujiwara, Tobias Schindler, Yoshihiro Kon, Kazuhiko Sato, Jun Okuda, Kazushi Mashima

Chemical communications (Cambridge, England)　2021/10/07　Research paper (scientific journal)

Pyridine-Mediated B-B Bond Activation of (RO)(2)B-B(OR)(2) for Generating Borylpyridine Anions and Pyridine-Stabilized Boryl Radicals as Useful Boryl Reagents in Organic Synthesis

Luis C. Misal Castro, Ibrahim Sultan, Hayato Tsurugi, Kazushi Mashima

SYNTHESIS-STUTTGART　Vol. 53　No. 18　p. 3211-3226　2021/09　Research paper (scientific journal)

Effects of Silver Carbonate and p-Nitrobenzoic Acid for Accelerating Palladium-Catalyzed Allylic C-H Acyloxylation

Aymen Skhiri, Haruki Nagae, Hayato Tsurugi, Masahiko Seki, Kazushi Mashima

ORGANIC LETTERS　Vol. 23　No. 18　p. 7044-7048　2021/09　Research paper (scientific journal)

Mechanistic Study of Ni and Cu Dual Catalyst for Asymmetric C–C Bond Formation; Asymmetric Coupling of 1,3-Dienes with C-nucleophiles to Construct Vicinal Stereocenters

Jingzhao Xia, Takahiro Hirai, Shoichiro Katayama, Haruki Nagae, Wanbin Zhang, Kazushi Mashima

ACS Catalysis　Vol. 11　No. 11　p. 6643-6655　2021/06/04　Research paper (scientific journal)

Renaissance of Homogeneous Cerium Catalysts with Unique Ce(IV/III) Couple: Redox-Mediated Organic Transformations Involving Homolysis of Ce(IV)-Ligand Covalent Bonds

Hayato Tsurugi, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 143　No. 21　p. 7879-7890　2021/06　Research paper (scientific journal)

Direct Synthesis of Indoles from Azoarenes and Ketones with Bis(neopentylglycolato)diboron Using 4,4 '-Bipyridyl as an Organocatalyst

Luis C. Misal Castro, Ibrahim Sultan, Kohei Nishi, Hayato Tsurugi, Kazushi Mashima

JOURNAL OF ORGANIC CHEMISTRY　Vol. 86　No. 4　p. 3287-3299　2021/02　Research paper (scientific journal)

Runge–Kutta analysis for optimizing the Zn-catalyzed transesterification conditions of MA and MMA with diols to maximize monoesterified products

Taito Kato, Shin-ya Akebi, Haruki Nagae, Koji Yonehara, Tomoharu Oku, Kazushi Mashima

Catalysis Science & Technology　2021　Research paper (scientific journal)

Syntheses of SGLT2 Inhibitors by Ni- and Pd-Catalyzed Fukuyama Coupling Reactions

Jalindar Talode, Daiki Kato, Haruki Nagae, Hayato Tsurugi, Masahiko Seki, Kazushi Mashima

The Journal of Organic Chemistry　Vol. 85　No. 19　p. 12382-12392　2020/10/02　Research paper (scientific journal)

Self-Assembled Multilayer Iron(0) Nanoparticle Catalyst for Ligand-Free Carbon–Carbon/Carbon–Nitrogen Bond-Forming Reactions

Toshiki Akiyama, Yuki Wada, Makito Yamada, Yasunori Shio, Tetsuo Honma, Shuhei Shimoda, Kazuki Tsuruta, Yusuke Tamenori, Hitoshi Haneoka, Takeyuki Suzuki, Kazuo Harada, Hayato Tsurugi, Kazushi Mashima, Jun-ya Hasegawa, Yoshihiro Sato, Mitsuhiro Arisawa

Organic Letters　Vol. 22　No. 18　p. 7244-7249　2020/09/18　Research paper (scientific journal)

Front Cover: Esterification of Tertiary Amides: Remarkable Additive Effects of Potassium Alkoxides for Generating Hetero Manganese–Potassium Dinuclear Active Species (Chem. Eur. J. 47/2020)

Takahiro Hirai, Daiki Kato, Binh Khanh Mai, Shoichiro Katayama, Shoko Akiyama, Haruki Nagae, Fahmi Himo, Kazushi Mashima

Chemistry – A European Journal　Vol. 26　No. 47　p. 10643-10643　2020/08/21　Research paper (scientific journal)

Esterification of Tertiary Amides: Remarkable Additive Effects of Potassium Alkoxides for Generating Hetero Manganese-Potassium Dinuclear Active Species

Takahiro Hirai, Daiki Kato, Binh Khanh Mai, Shoichiro Katayama, Shoko Akiyama, Haruki Nagae, Fahmi Himo, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 26　No. 47　p. 10735-10742　2020/08　Research paper (scientific journal)

Cover Feature: Monohydride‐Dichloro Rhodium(III) Complexes with Chiral Diphosphine Ligands as Catalysts for Asymmetric Hydrogenation of Olefinic Substrates (Chem. Eur. J. 40/2020)

Kosuke Higashida, Fabian Brüning, Nagataka Tsujimoto, Kenya Higashihara, Haruki Nagae, Antonio Togni, Kazushi Mashima

Chemistry – A European Journal　Vol. 26　No. 40　p. 8667-8667　2020/07/17　Research paper (scientific journal)

Trivalent Rare-earth Metal Amide Complexes as Catalysts for Hydrosilylation of Benzophenone Derivatives with HN(SiHMe2)2 via Amine Exchange Reaction.

Koichi Shinohara, Hayato Tsurugi, Reiner Anwander, Kazushi Mashima

Chemistry (Weinheim an der Bergstrasse, Germany)　2020/07/07　Research paper (scientific journal)

Monohydride-Dichloro Rhodium(III) Complexes with Chiral Diphosphine Ligands as Catalysts for Asymmetric Hydrogenation of Olefinic Substrates

Kosuke Higashida, Fabian Bruning, Nagataka Tsujimoto, Kenya Higashihara, Haruki Nagae, Antonio Togni, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 26　No. 40　p. 8749-8759　2020/07　Research paper (scientific journal)

Alternating Copolymerization of CO2 and Cyclohexene Oxide Catalyzed by Cobalt-Lanthanide Mixed Multinuclear Complexes

Hiroki Asaba, Takanori Iwasaki, Masahiro Hatazawa, Jingyuan Deng, Haruki Nagae, Kazushi Mashima, Kyoko Nozaki

INORGANIC CHEMISTRY　Vol. 59　No. 12　p. 7928-7933　2020/06　Research paper (scientific journal)

Asymmetric Allylic Alkylation of beta-Ketoesters via C-N Bond Cleavage of N-Allyl-N-methylaniline Derivatives Catalyzed by a Nickel-Diphosphine System

Haruki Nagae, Jingzhao Xia, Evgueni Kirillov, Kosuke Higashida, Koya Shoji, Valentin Boiteau, Wanbin Zhang, Jean-Francois Carpentier, Kazushi Mashima

ACS CATALYSIS　Vol. 10　No. 10　p. 5828-5839　2020/05　Research paper (scientific journal)

Cerium(IV) Carboxylate Photocatalyst for Catalytic Radical Formation from Carboxylic Acids: Decarboxylative Oxygenation of Aliphatic Carboxylic Acids and Lactonization of Aromatic Carboxylic Acids.

Satoru Shirase, Sota Tamaki, Koichi Shinohara, Keishi Hirosawa, Hayato Tsurugi, Tetsuya Satoh, Kazushi Mashima

Journal of the American Chemical Society　Vol. 142　No. 12　p. 5668-5675　2020/03/25　Research paper (scientific journal)

Reactivity of terminal imido complexes of group 4–6 metals: Stoichiometric and catalytic reactions involving cycloaddition with unsaturated organic molecules

Kento Kawakita, Bernard F. Parker, Yuya Kakiuchi, Hayato Tsurugi, Kazushi Mashima, John Arnold, Ian A. Tonks

Coordination Chemistry Reviews　Vol. 407　p. 213118-213118　2020/03　Research paper (scientific journal)

Synthesis, Structure, and Reactivity of Dicationic Bimetallic Tetrabenzyldihafnium Complexes Bearing a Chelating (2-Hydroxyethyl)amido Ligand

Mariko Inoue, Michael J. Lopez, Hayato Tsurugi, Kazushi Mashima

Organometallics　Vol. 39　No. 4　p. 614-622　2020/02/24　Research paper (scientific journal)

Chromium-catalyzed cyclopropanation of alkenes with bromoform in the presence of 2,3,5,6-tetramethyl-1,4-bis(trimethylsilyl)-1,4-dihydropyrazine

Hideaki Ikeda, Kohei Nishi, Hayato Tsurugi, Kazushi Mashima

Chemical Science　Vol. 11　No. 14　p. 3604-3609　2020　Research paper (scientific journal)

Cobalt-Catalyzed E-Selective Cross-Dimerization of Terminal Alkynes: A Mechanism Involving Cobalt(0/II) Redox Cycles

Ueda, Yohei, Tsurugi, Hayato, Mashima, Kazushi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 59　No. 4　p. 1552-1556　2020/01　Research paper (scientific journal)

4,4'-Bipyridyl-Catalyzed Reduction of Nitroarenes by Bis(neopentylglycolato)diboron

Hosoya, Hiromu, Castro, Luis C. Misal, Sultan, Ibrahim, Nakajima, Yumiko, Ohmura, Toshimichi, Sato, Kazuhiko, Tsurugi, Hayato, Suginome, Michinori, Mashima, Kazushi

ORGANIC LETTERS　Vol. 21　No. 24　p. 9812-9817　2019/12　Research paper (scientific journal)

Synthesis of Pyridylimido Complexes of Tantalum and Niobium by Reductive Cleavage of the N=N Bond of 2,2 '-Azopyridine: Precursors for Early-Late Heterobimetallic Complexes

Kawakita, Kento, Kalduchi, Yuya, Beaumier, Evan P., Tonks, Ian A., Tsurugi, Hayato, Mashima, Kazushi

INORGANIC CHEMISTRY　Vol. 58　No. 22　p. 15155-15165　2019/11　Research paper (scientific journal)

alpha-Diimine-Niobium Complex-Catalyzed Deoxychlorination of Benzyl Ethers with Silicon Tetrachloride

Parker, Bernard F., Hosoya, Hiromu, Arnold, John, Tsurugi, Hayato, Mashima, Kazushi

INORGANIC CHEMISTRY　Vol. 58　No. 19　p. 12825-12831　2019/10　Research paper (scientific journal)

Synthesis and Characterization of Alkoxide-Bridged Heterometallic Clusters of Cerium and Copper

Tsurugi, Hayato, Ikeda, Yuri, Shinohara, Koichi, Shirase, Satoru, Toya, Nozomi, Tanaka, Shinji, Mashima, Kazushi

INORGANIC CHEMISTRY　Vol. 58　No. 19　p. 12565-12572　2019/10　Research paper (scientific journal)

Catalytic Cleavage of Amide C−N Bond: Scandium, Manganese, and Zinc Catalysts for Esterification of Amides

Kazushi Mashima, Yuji Nishii, Haruki Nagae

THE CHEMICAL RECORD　2019/09

Metal-free Reductive Deoxygenation of Sulfoxides by an Organosilicon Reductant, 1,1-Bis(trimethylsilyl)-1H,1 ' H-4,4 '-bipyridinylidene

Bhattacharjee, Argha, Hosoya, Hiromu, Yurino, Taiga, Tsurugi, Hayato, Mashima, Kazushi

CHEMISTRY LETTERS　Vol. 48　No. 8　p. 888-890　2019/08　Research paper (scientific journal)

Hydrodehalogenation of alkyl halides catalyzed by a trichloroniobium complex with a redox active alpha-diimine ligand

Nishiyama, Haruka, Hosoya, Hiromu, Parker, Bernard F., Arnold, John, Tsurugi, Hayato, Mashima, Kazushi

CHEMICAL COMMUNICATIONS　Vol. 55　No. 50　p. 7247-7250　2019/06　Research paper (scientific journal)

Bis(imido)vanadium(V)-Catalyzed [2+2+1] Coupling of Alkynes and Azobenzenes Giving Multisubstituted Pyrroles

Kawakita, Kento, Beaumier, Evan P., Kakiuchi, Yuya, Tsurugi, Hayato, Tonks, Ian A., Mashima, Kazushi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 141　No. 10　p. 4194-4198　2019/03　Research paper (scientific journal)

Bis(imido)vanadium(V)-Catalyzed [2+2+1] Coupling of Alkynes and Azobenzenes Giving Multisubstituted Pyrroles

Kawakita, Kento, Beaumier, Evan P., Kakiuchi, Yuya, Tsurugi, Hayato, Tonks, Ian A., Mashima, Kazushi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 141　No. 10　p. 4194-4198　2019/03　Research paper (scientific journal)

Salt-Free Reduction of Transition Metal Complexes by Bis(trimethylsilyl)cyclohexadiene, -dihydropyrazine, and-4,4 '-bipyridinylidene Derivatives

Tsurugi, Hayato, Mashima, Kazushi

ACCOUNTS OF CHEMICAL RESEARCH　Vol. 52　No. 3　p. 769-779　2019/03

C-beta-C-beta Bond Fission of Metallacyclopentadiene over a Low-Valent Ditantalum Scaffold

Laskar, Payel, Yamamoto, Keishi, Nishi, Kohei, Ikeda, Hideaki, Tsurugi, Hayato, Mashima, Kazushi

ORGANOMETALLICS　Vol. 38　No. 3　p. 722-729　2019/02　Research paper (scientific journal)

Dinuclear manganese alkoxide complexes as catalysts for C-N bond cleavage of simple tertiary: N, N -dialkylamides to give esters

Haruki Nagae, Takahiro Hirai, Daiki Kato, Shusei Soma, Shin Ya Akebi, Kazushi Mashima

Chemical Science　Vol. 10　No. 10　p. 2860-2868　2019　Research paper (scientific journal)

Nickel-catalyzed cyanation of aryl halides and triflates using acetonitrile via C-CN bond cleavage assisted by 1,4-bis(trimethylsilyl)-2,3,5,6-tetramethyl-1,4-dihydropyrazine

Ueda, Yohei, Tsujimoto, Nagataka, Yurino, Taiga, Tsurugi, Hayato, Mashima, Kazushi

CHEMICAL SCIENCE　Vol. 10　No. 4　p. 994-999　2019/01　Research paper (scientific journal)

Dinuclear manganese alkoxide complexes as catalysts for C-N bond cleavage of simple tertiary: N, N -dialkylamides to give esters

Haruki Nagae, Takahiro Hirai, Daiki Kato, Shusei Soma, Shin Ya Akebi, Kazushi Mashima

Chemical Science　Vol. 10　No. 10　p. 2860-2868　2019　Research paper (scientific journal)

A New Protocol to Generate Catalytically Active Species of Group 4-6 Metals by Organosilicon-Based Salt-Free Reductants

Tsurugi, Hayato, Mashima, Kazushi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 25　No. 4　p. 913-919　2019/01　Research paper (scientific journal)

Asymmetric Hydrogenation of Aryl Perfluoroalkyl Ketones Catalyzed by Rhodium(III) Monohydride Complexes Bearing Josiphos Ligands

Fabian Brüning, Haruki Nagae, Daniel Käch, Kazushi Mashima, Antonio Togni

Chemistry - A European Journal　Vol. 25　No. 46　p. 10818-10822　2019　Research paper (scientific journal)

Activation of O-2 by Organosilicon Reagents Yields Quantitative Amounts of H2O2 or (Me3Si)(2)O-2 for Efficient O-Transfer Reactions

Yamamoto, Keishi, Tanaka, Shinji, Hosoya, Hiromu, Tsurugi, Hayato, Mashima, Kazushi, Coperet, Christophe

HELVETICA CHIMICA ACTA　Vol. 101　No. 12　2018/12　Research paper (scientific journal)

In Situ Catalyst Generation and Benchtop-Compatible Entry Points for Ti-II/Ti-IV Redox Catalytic Reactions

Davis-Gilbert, Zachary W., Kawakita, Kento, Blechschmidt, Daniel R., Tsurugi, Hayato, Mashima, Kazushi, Tonks, Ian A.

ORGANOMETALLICS　Vol. 37　No. 23　p. 4439-4445　2018/12　Research paper (scientific journal)

Deprotonation of a formato ligand by a cis-coordinated carbyne ligand within a bis(phenolate) tungsten complex

Schindler, Tobias, Paparo, Albert, Nishiyama, Haruka, Spaniol, Thomas P., Tsurugi, Hayato, Mashima, Kazushi, Okuda, Jun

DALTON TRANSACTIONS　Vol. 47　No. 38　p. 13328-13331　2018/10　Research paper (scientific journal)

Deprotonation of a formato ligand by a cis-coordinated carbyne ligand within a bis(phenolate) tungsten complex

Schindler, Tobias, Paparo, Albert, Nishiyama, Haruka, Spaniol, Thomas P., Tsurugi, Hayato, Mashima, Kazushi, Okuda, Jun

DALTON TRANSACTIONS　Vol. 47　No. 38　p. 13328-13331　2018/10　Research paper (scientific journal)

Bonding and structural features of metal-metal bonded homo- and hetero-dinuclear complexes supported by unsaturated hydrocarbon ligands

Tsurugi, Hayato, Laskar, Payel, Yamamoto, Keishi, Mashima, Kazushi

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 869　p. 251-263　2018/08　Research paper (scientific journal)

Metal-Free Deoxygenation and Reductive Disilylation of Nitroarenes by Organosilicon Reducing Reagents

Bhattacharjee, Argha, Hosoya, Hiromu, Ikeda, Hideaki, Nishi, Kohei, Tsurugi, Hayato, Mashima, Kazushi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 24　No. 44　p. 11278-11282　2018/08　Research paper (scientific journal)

Oxidation of Alcohols to Carbonyl Compounds Catalyzed by Oxo-Bridged Dinuclear Cerium Complexes with Pentadentate Schiff-Base Ligands under a Dioxygen Atmosphere

Shirase, Satoru, Shinohara, Koichi, Tsurugi, Hayato, Mashima, Kazushi

ACS CATALYSIS　Vol. 8　No. 8　p. 6939-6947　2018/08　Research paper (scientific journal)

Metal-Free Deoxygenation and Reductive Disilylation of Nitroarenes by Organosilicon Reducing Reagents

Bhattacharjee, Argha, Hosoya, Hiromu, Ikeda, Hideaki, Nishi, Kohei, Tsurugi, Hayato, Mashima, Kazushi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 24　No. 44　p. 11278-11282　2018/08　Research paper (scientific journal)

Functionalization of the C-H Bond of N-Heteroaromatics Assisted by Early Transition-Metal Complexes

Nagae, Haruki, Kundu, Abhinanda, Inoue, Mariko, Tsurugi, Hayato, Mashima, Kazushi

ASIAN JOURNAL OF ORGANIC CHEMISTRY　Vol. 7　No. 7　p. 1256-1269　2018/07

Direct ortho-C-H Aminoalkylation of 2-Substituted Pyridine Derivatives Catalyzed by Yttrium Complexes with N,N '-Diarylethylenediamido Ligands

Kundu, Abhinanda, Inoue, Mariko, Nagae, Haruki, Tsurugi, Hayato, Mashima, Kazushi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 140　No. 23　p. 7332-7342　2018/06　Research paper (scientific journal)

Planar and Bent BN-Embedded p-Quinodimethanes Synthesized by Transmetalation of Bis(trimethylsilyl)-1,4-dihydropyrazines with Chloroborane

Noguchi, Mao, Suzuki, Katsunori, Kobayashi, Jun, Yurino, Taiga, Tsurugi, Hayato, Mashima, Kazushi, Yamashita, Makoto

ORGANOMETALLICS　Vol. 37　No. 12　p. 1833-1836　2018/06　Research paper (scientific journal)

Silica-supported isolated molybdenum di-oxo species: formation and activation with organosilicon agent for olefin metathesis

Yamamoto, Keishi, Chan, Ka Wing, Mougel, Victor, Nagae, Haruki, Tsurugi, Hayato, Safonova, Olga V., Mashima, Kazushi, Coperet, Christophe

CHEMICAL COMMUNICATIONS　Vol. 54　No. 32　p. 3989-3992　2018/04　Research paper (scientific journal)

Metathesis cleavage of an N=N bond in benzo[c]cinnolines and azobenzenes by triply-bonded ditungsten complexes

Ikeda, Hideaki, Nishi, Kohei, Tsurugi, Hayato, Mashima, Kazushi

CHEMICAL COMMUNICATIONS　Vol. 54　No. 30　p. 3709-3711　2018/04　Research paper (scientific journal)

Lanthanoidkomplexe mit Trizink-Kronenether als Katalysatoren für die alternierende Copolymerisation von Epoxid und CO2 : eine durch Carboxylat-Anionen kontrollierte Telomerisierung

Haruki Nagae, Ryota Aoki, Shin-nosuke Akutagawa, Julian Kleemann, Risa Tagawa, Tobias Schindler, Gyeongshin Choi, Thomas P. Spaniol, Hayato Tsurugi, Jun Okuda, Kazushi Mashima

Angewandte Chemie　Vol. 130　No. 9　2018/02

Organosilicon Reducing Reagents for Stereoselective Formations of Silyl Enol Ethers from alpha-Halo Carbonyl Compounds

Pramanik, Suman, Rej, Supriya, Kando, Shun, Tsurugi, Hayato, Mashima, Kazushi

JOURNAL OF ORGANIC CHEMISTRY　Vol. 83　No. 4　p. 2409-2417　2018/02　Research paper (scientific journal)

Lanthanide Complexes Supported by a Trizinc Crown Ether as Catalysts for Alternating Copolymerization of Epoxide and CO2: Telomerization Controlled by Carboxylate Anions

Nagae, Haruki, Aoki, Ryota, Akutagawa, Shin-nosuke, Kleemann, Julian, Tagawa, Risa, Schindler, Tobias, Choi, Gyeongshin, Spaniol, Thomas P., Tsurugi, Hayato, Okuda, Jun, Mashima, Kazushi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 57　No. 9　p. 2492-2496　2018/02　Research paper (scientific journal)

Multiply-bonded dinuclear complexes of early-transition metals as minimum entities of metal cluster catalysts

Rej, Supriya, Tsurugi, Hayato, Mashima, Kazushi

COORDINATION CHEMISTRY REVIEWS　Vol. 355　p. 223-239　2018/01

Development of direct enantioselective alkynylation of αketoester and α-ketiminoesters catalyzed by phenylbis(oxazoline)Rh(III) complexes

Kazuhiro Morisaki, Hiroyuki Morimoto, Kazushi Mashima, Takashi Ohshima

Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry　Vol. 76　No. 3　p. 226-240　2018　Research paper (scientific journal)

Dehalogenation of vicinal dihalo compounds by 1,1 '-bis(trimethylsilyl)-1H, 1 ' H-4,4 '- bipyridinylidene for giving alkenes and alkynes in a salt-free manner

Supriya Rej, Suman Pramanik, Hayato Tsurugi, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 53　No. 98　p. 13157-13160　2017/12　Research paper (scientific journal)

Tantallacyclopentadiene as a unique metal-containing diene ligand coordinated to nickel for preparing tantalum-nickel heterobimetallic complexes

Payel Laskar, Keishi Yamamoto, Anga Srinivas, Alexis Mifleur, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 46　No. 38　p. 13043-13054　2017/10　Research paper (scientific journal)

Zinc-Catalyzed Esterification of N-beta-Hydroxyethylamides: Removal of Directing Groups under Mild Conditions

Yuji Nishii, Takahiro Hirai, Sarah Fernandez, Paul Knochel, Kazushi Mashima

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY　No. 34　p. 5010-5014　2017/09　Research paper (scientific journal)

Tunable Ligand Effects on Ruthenium Catalyst Activity for Selectively Preparing Imines or Amides by Dehydrogenative Coupling Reactions of Alcohols and Amines

Takafumi Higuchi, Risa Tagawa, Atsuhiro Iimuro, Shoko Akiyama, Haruki Nagae, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 23　No. 52　p. 12795-12804　2017/09　Research paper (scientific journal)

Front Cover: Zinc-Catalyzed Esterification of N--Hydroxyethylamides: Removal of Directing Groups under Mild Conditions (Eur. J. Org. Chem. 34/2017)

Yuji Nishii, Takahiro Hirai, Sarah Fernandez, Paul Knochel, Kazushi Mashima

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY　No. 34　p. 4995-4995　2017/09　Research paper (scientific journal)

Propargylic C(sp(3))-H Bond Activation for Preparing eta(3)-Propargyl/Allenyl Complexes of Yttrium

Haruki Nagae, Abhinanda Kundu, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 36　No. 16　p. 3061-3067　2017/08　Research paper (scientific journal)

Group 2 metal (Mg, Ca, Sr) silylamides supported by a cyclen-derived macrocyclic polyamine

Debabrata Mukherjee, Satoru Shirase, Klaus Beckerle, Thomas P. Spaniol, Kazushi Mashima, Jun Okuda

DALTON TRANSACTIONS　Vol. 46　No. 26　p. 8451-8457　2017/07　Research paper (scientific journal)

Structural and Electronic Noninnocence of alpha-Diimine Ligands on Niobium for Reductive C-Cl Bond Activation and Catalytic Radical Addition Reactions

Haruka Nishiyama, Hideaki Ikeda, Teruhiko Saito, Benjamin Kriegel, Hayato Tsurugi, John Arnold, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 139　No. 18　p. 6494-6505　2017/05　Research paper (scientific journal)

Inorganic-Salt-Free Reduction in Main-Group Chemistry: Synthesis of a Dibismuthene and a Distibene

Paresh Kumar Majhi, Hideaki Ikeda, Takahiro Sasamori, Hayato Tsurugi, Kazushi Mashima, Norihiro Tokitoh

ORGANOMETALLICS　Vol. 36　No. 7　p. 1224-1226　2017/04　Research paper (scientific journal)

Mixed Ligated Tris(amidinate)dimolybdenum Complexes as Catalysts for Radical Addition of CCl4 to 1-Hexene: Leaving Ligand Lability Controls Catalyst Activity

Supriya Rej, Moumita Majumdar, Shun Kando, Yoshitaka Sugino, Hayato Tsurugi, Kazushi Mashima

INORGANIC CHEMISTRY　Vol. 56　No. 1　p. 634-644　2017/01　Research paper (scientific journal)

DIRECT ENANTIOSELECTIVE ALKYNYLATION OF alpha-KETOESTERS AND alpha-KETIMINOESTERS CATALYZED BY [BIS(OXAZOLINE)PHENYL]RHODIUM(III) COMPLEXES

Kazuhiro Morisaki, Hiroyuki Morimoto, Kazushi Mashima, Takashi Ohshima

HETEROCYCLES　Vol. 95　No. 2　p. 637-661　2017/01　Research paper (scientific journal)

Chiral dinuclear rhodium(III) complexes as catalyst precursors for asymmetric hydrogenation of simple olefins

Higashihara K, Higashida K, Nagae H, Mashima K

Abstracts of Papers of the American Chemical Society　Vol. 253　2017

Cerium clusters supported by trimetallic crown ethers as catalysts for alternative copolymerization of cyclohexene oxide and CO2

Mashima K, Nagae H, Aoki R, Spaniol T, Okuda J

Abstracts of Papers of the American Chemical Society　Vol. 253　2017

Catalytic aerobic oxidation of alcohols catalyzed by cerium complexes supported by a pentadentate Schiff-base ligand

Shirase S, Tsurugi H, Mashima K

Abstracts of Papers of the American Chemical Society　Vol. 253　2017

ASYMMETRIC HYDROGENATION OF SIX-MEMBERED MONOCYCLIC N-HETEROAROMATIC COMPOUNDS

Atsuhiro Iimuro, Kosuke Higashida, Haruki Nagae, Kazushi Mashima

HETEROCYCLES　Vol. 95　No. 1　p. 63-80　2017/01

Arylimido-Bridged Dinuclear Ti(mu-NAr)(2)Ti Scaffold for Alkyne Insertion into the ortho-C-H Bond of Arylimido Ligands

Haruki Nagae, Wataru Hato, Kento Kawakita, Hayato Tsurugi, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 23　No. 3　p. 586-596　2017/01　Research paper (scientific journal)

Triply Halide-Bridged Dinuclear Iridium(III) Complexes with Chiral Diphosphine Ligands as New Easy-to-Handle Iridium Catalysts for Asymmetric Hydrogenation of Imines and N-Heteroaromatics

Kazushi Mashima, Kosuke Higashida, Atsuhiro Iimuro, Haruki Nagae, Yusuke Kita

CHEMICAL RECORD　Vol. 16　No. 6　p. 2585-2598　2016/12　Research paper (scientific journal)

Iridium-Catalyzed Asymmetric Hydrogenation of Tosylamido-Substituted Pyrazines for Constructing Chiral Tetrahydropyrazines with an Amidine Skelton

Kosuke Higashida, Haruki Nagae, Kazushi Mashima

ADVANCED SYNTHESIS & CATALYSIS　Vol. 358　No. 24　p. 3949-3954　2016/12　Research paper (scientific journal)

Synthesis and Characterization of Heterobimetallic Tantalum-Rhodium and Tantalum-Iridium Complexes Connected by a Tantalacyclopentadiene Fragment

Keishi Yamamoto, Kosuke Higashida, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

HELVETICA CHIMICA ACTA　Vol. 99　No. 11　p. 848-858　2016/11　Research paper (scientific journal)

C(sp(3))-H Alkenylation Catalyzed by Cationic Alkylhafnium Complexes: Stereoselective Synthesis of Trisubstituted Alkenes from 2,6-Dimethylpyridines and Internal Alkynes

Michael J. Lopez, Ai Kondo, Haruki Nagae, Koji Yamamoto, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 35　No. 22　p. 3816-3827　2016/11　Research paper (scientific journal)

Chemoselective Reduction of Tertiary Amides to Amines Catalyzed by Triphenylborane

Debabrata Mukherjee, Satoru Shirase, Kazushi Mashima, Jun Okuda

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 55　No. 42　p. 13326-13329　2016/10　Research paper (scientific journal)

Low Temperature Activation of Supported Metathesis Catalysts by Organosilicon Reducing Agents

Victor Mougel, Ka-Wing Chan, Georges Siddiqi, Kento Kawakita, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima, Olga Safonova, Christophe Coperet

ACS CENTRAL SCIENCE　Vol. 2　No. 8　p. 569-576　2016/08　Research paper (scientific journal)

E-Selective Semi-hydrogenation of Alkynes with Dinuclear Iridium Complexes under Atmospheric Pressure of Hydrogen

Kosuke Higashida, Kazushi Mashima

CHEMISTRY LETTERS　Vol. 45　No. 8　p. 866-868　2016/08　Research paper (scientific journal)

Synthesis and Reactions of Ditantalum-Allyl Complexes Derived from Intramolecular C-H Bond Activation of the Methylene of the Ethyl Group Bound to Ditantallacyclopentadiene

Keishi Yamamoto, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 35　No. 14　p. 2384-2390　2016/07　Research paper (scientific journal)

Chloride-Bridged Dinuclear Rhodium(III) Complexes Bearing Chiral Diphosphine Ligands: Catalyst Precursors for Asymmetric Hydrogenation of Simple Olefins

Yusuke Kita, Shoji Hida, Kenya Higashihara, Himanshu Sekhar Jena, Kosuke Higashida, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 55　No. 29　p. 8299-8303　2016/07　Research paper (scientific journal)

Asymmetric Hydrogenation of 3-Amido-2-arylpyridinium Salts by Triply Chloride-Bridged Dinuclear Iridium Complexes Bearing Enantiopure Diphosphine Ligands: Synthesis of Neurokinin-1 Receptor Antagonist Derivatives

Atsuhiro Iimuro, Kosuke Higashida, Yusuke Kita, Kazushi Mashima

ADVANCED SYNTHESIS & CATALYSIS　Vol. 358　No. 12　p. 1929-1933　2016/06　Research paper (scientific journal)

Studies of the Electronic Effects of Zinc Cluster Catalysts and Their Application to the Transesterification of beta-Keto Esters

Kazushi Agura, Yukiko Hayashi, Mari Wada, Daiki Nakatake, Kazushi Mashima, Takashi Ohshima

CHEMISTRY-AN ASIAN JOURNAL　Vol. 11　No. 10　p. 1548-1554　2016/05　Research paper (scientific journal)

Mechanistic Studies and Expansion of the Substrate Scope of Direct Enantioselective Alkynylation of alpha-Ketiminoesters Catalyzed by Adaptable (Phebox)Rhodium(III) Complexes

Kazuhiro Morisaki, Masanao Sawa, Ryohei Yonesaki, Hiroyuki Morimoto, Kazushi Mashima, Takashi Ohshima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 138　No. 19　p. 6194-6203　2016/05　Research paper (scientific journal)

Alkyne-Induced Facile C-C Bond Formation of Two eta(2)-Alkynes on Dinuclear Tantalum Bis(alkyne) Complexes To Give Dinuclear Tantalacyclopentadienes

Keishi Yamamoto, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 35　No. 10　p. 1573-1581　2016/05　Research paper (scientific journal)

Reversible Transformation between Alkylidene, Alkylidyne, and Vinylidene Ligands in High-Valent Bis(phenolate) Tungsten Complexes

Haruka Nishiyama, Keishi Yamamoto, Andreas Sauer, Hideaki Ikeda, Thomas P. Spaniol, Hayato Tsurugi, Kazushi Mashima, Jun Okuda

ORGANOMETALLICS　Vol. 35　No. 7　p. 932-935　2016/04　Research paper (scientific journal)

Cerium-Complex-Catalyzed Oxidation of Arylmethanols under Atmospheric Pressure of Dioxygen and Its Mechanism through a Side-On -Peroxo Dicerium(IV) Complex

Mitali Paul, Satoru Shirase, Yuma Morimoto, Laurent Mathey, Balasubramanian Murugesapandian, Shinji Tanaka, Shinobu Itoh, Hayato Tsurugi, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 22　No. 12　p. 4008-4014　2016/03　Research paper (scientific journal)

Synthesis and Characterization of Paramagnetic Tungsten Imido Complexes Bearing alpha-Diimine Ligands

Hiromasa Tanahashi, Hideaki Ikeda, Hayato Tsurugi, Kazushi Mashima

INORGANIC CHEMISTRY　Vol. 55　No. 4　p. 1446-1452　2016/02　Research paper (scientific journal)

Recent Developments in Homogeneous Organomagnesium Catalysis

Raphael Rochat, Michael J. Lopez, Hayato Tsurugi, Kazushi Mashima

CHEMCATCHEM　Vol. 8　No. 1　p. 10-20　2016/01　Research paper (scientific journal)

Mechanistic understanding of alkyne cyclotrimerization on mononuclear and dinuclear scaffolds: [4+2] cycloaddition of the third alkyne onto metallacyclopentadienes and dimetallacyclopentadienes

Keishi Yamamoto, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 45　No. 43　p. 17072-17081　2016　Research paper (scientific journal)

Magnesium hydridotriphenylborate [Mg(thf)(6)][HBPh3](2): a versatile hydroboration catalyst

Debabrata Mukherjee, Satoru Shirase, Thomas P. Spaniol, Kazushi Mashima, Jun Okuda

CHEMICAL COMMUNICATIONS　Vol. 52　No. 89　p. 13155-13158　2016　Research paper (scientific journal)

Hydroalkylation of internal alkynes via C(sp3)-H bond activation of 2,6-dimethyl-N-heterocycles by cationic alkylhafnium complexes supported by dianionic multidentate ligands

Lopez M, Kondo A, Yamamoto K, Tsurugi H, Mashima K

Abstracts of Papers of the American Chemical Society　Vol. 251　2016

Development and mechanistic studies of Rh-catalyzed direct enantioselective alkynylation of alpha-ketiminoesters

Morisaki K, Morimoto H, Sawa M, Yonesaki R, Mashima K, Ohshima T

Abstracts of Papers of the American Chemical Society　Vol. 252　2016

Chemo- and Regioselective Reduction of 5,15-Diazaporphyrins Providing Antiaromatic Azaporphyrinoids

Yamaji, A., Tsurugi, H., Miyake, Y., Mashima, K., Shinokubo, H.

Chemistry - A European Journal　Vol. 22　No. 12　p. 3956-3961　2016　Research paper (scientific journal)

Asymmetric Allylic Alkylation of -Ketoesters with Allylic Alcohols by a Nickel/Diphosphine Catalyst

Yusuke Kita, Rahul D. Kavthe, Hiroaki Oda, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 55　No. 3　p. 1098-1101　2016/01　Research paper (scientific journal)

Salt- Free Reduction of Nonprecious Transition- Metal Compounds: Generation of Amorphous Ni Nanoparticles for Catalytic C-C Bond Formation

Taiga Yurino, Yohei Ueda, Yoshiki Shimizu, Shinji Tanaka, Haruka Nishiyama, Hayato Tsurugi, Kazuhiko Sato, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 54　No. 48　p. 14437-14441　2015/11　Research paper (scientific journal)

Pentacoordinated Carboxylate π-Allyl Nickel Complexes as Key Intermediates for the Ni-Catalyzed Direct Amination of Allylic Alcohols

Yusuke Kita, Hironobu Sakaguchi, Yoichi Hoshimoto, Daisuke Nakauchi, Yasuhito Nakahara, Jean François Carpentier, Sensuke Ogoshi, Kazushi Mashima

Chemistry - A European Journal　Vol. 21　No. 41　p. 14571-14578　2015/10/01　Research paper (scientific journal)

Preface

Kazushi Mashima

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 73　No. 9　p. 873-873　2015/09

Cerium(IV) Hexanuclear Clusters from Cerium(III) Precursors: Molecular Models for Oxidative Growth of Ceria Nanoparticles

Laurent Mathey, Mitali Paul, Christophe Coperet, Hayato Tsurugi, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 38　p. 13454-13461　2015/09　Research paper (scientific journal)

Manganese(II)-Catalyzed Esterification of N-beta-Hydroxyethylamides

Yuji Nishii, Shoko Akiyama, Yusuke Kita, Kazushi Mashima

SYNLETT　Vol. 26　No. 13　p. 1831-1834　2015/08　Research paper (scientific journal)

Direct Evidence for a [4+2] Cycloaddition Mechanism of Alkynes to Tantallacyclopentadiene on Dinuclear Tantalum Complexes as a Model of Alkyne Cyclotrimerization

Keishi Yamamoto, Hayato Tsurugi, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 32　p. 11369-11377　2015/08　Research paper (scientific journal)

Reduction of ((BuN)-Bu-t=)NbCl3(py)(2) in a Salt-Free Manner for Generating Nb(IV) Dinuclear Complexes and Their Reactivity toward Benzo[c]cinnoline

Teruhiko Saito, Haruka Nishiyama, Kento Kawakita, Michael Nechayev, Benjamin Kriegel, Hayato Tsurugi, John Arnold, Kazushi Mashima

INORGANIC CHEMISTRY　Vol. 54　No. 12　p. 6004-6009　2015/06　Research paper (scientific journal)

Organomagnesium-Catalyzed Isomerization of Terminal Alkynes to Allenes and Internal Alkynes

Raphael Rochat, Koji Yamamoto, Michael J. Lopez, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 22　p. 8112-8120　2015/05　Research paper (scientific journal)

Hydroalkylation of alkynes via C(sp3)-H bond activation of 2,6-lutidine by alkylhafnium complexes with tridentate nitrogen-based ligands

Michael Lopez, Ai Kondo, Koji Yamamoto, Hayato Tsurugi, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 249　2015/03

Gold-Catalyzed Carbenoid Transfer Reactions of Diynes - Pinacol Rearrangement versus Retro-Buchner Reaction

Tobias Lauterbach, Takafumi Higuchi, Matthias W. Hussong, Matthias Rudolph, Frank Rominger, Kazushi Mashima, A. Stephen K. Hashmi

ADVANCED SYNTHESIS & CATALYSIS　Vol. 357　No. 4　p. 775-781　2015/03　Research paper (scientific journal)

Synthesis of Alkyl and Alkylidene Complexes of Tungsten Bearing Imido and Redox-Active a-Diimine or o-Iminoquinone Ligands and Their Application as Catalysts for Ring-Opening Metathesis Polymerization of Norbornene

Hiromasa Tanahashi, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 34　No. 4　p. 731-741　2015/02　Research paper (scientific journal)

Cover Picture: Enhancing Effects of Salt Formation on Catalytic Activity and Enantioselectivity for Asymmetric Hydrogenation of Isoquinolinium Salts by Dinuclear Halide-Bridged Iridium Complexes Bearing Chiral Diphosphine Ligands (Chem. Eur. J. 5/2015)

Yusuke Kita, Kenta Yamaji, Kosuke Higashida, Kandula Sathaiah, Atuhiro Iimuro, Kazushi Mashima

Chemistry - A European Journal　Vol. 21　No. 5　p. 1821-1821　2015/01/20　Research paper (scientific journal)

Mixed-ligand complexes of paddlewheel dinuclear molybdenum as hydrodehalogenation catalysts for polyhaloalkanes

Hayato Tsurugi, Akio Hayakawa, Shun Kando, Yoshitaka Sugino, Kazushi Mashima

CHEMICAL SCIENCE　Vol. 6　No. 6　p. 3434-3439　2015　Research paper (scientific journal)

Enhancing Effects of Salt Formation on Catalytic Activity and Enantioselectivity for Asymmetric Hydrogenation of Isoquinolinium Salts by Dinuclear Halide-Bridged Iridium Complexes Bearing Chiral Diphosphine Ligands

Yusuke Kita, Kenta Yamaji, Kosuke Higashida, Kandula Sathaiah, Atuhiro Iimuro, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 5　p. 1915-1927　2015/01　Research paper (scientific journal)

Asymmetric hydrogenation of quinazolinium salts catalysed by halide-bridged dinuclear iridium complexes bearing chiral diphosphine ligands

Yusuke Kita, Kosuke Higashida, Kenta Yamaji, Atsuhiro Iimuro, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 51　No. 21　p. 4380-4382　2015　Research paper (scientific journal)

Aminomethylation Reaction of ortho-Pyridyl C-H Bonds Catalyzed by Group 3 Metal Triamido Complexes

Haruki Nagae, Yu Shibata, Hayato Tsurugi, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 137　No. 2　p. 640-643　2015/01　Research paper (scientific journal)

2,2 '-Bipyridyl formation from 2-arylpyridines through bimetallic diyttrium intermediate

Yu Shibata, Haruki Nagae, Shiki Sumiya, Raphael Rochat, Hayato Tsurugi, Kazushi Mashima

CHEMICAL SCIENCE　Vol. 6　No. 10　p. 5394-5399　2015　Research paper (scientific journal)

Supramolecular assemblies of multi-nuclear transition metal complexes: Synthesis and redox properties

Shinji Tanaka, Hayato Tsurugi, Kazushi Mashima

COORDINATION CHEMISTRY REVIEWS　Vol. 265　p. 38-51　2014/04

Dual Platinum and Pyrrolidine Catalysis in the Direct Alkylation of Allylic Alcohols: Selective Synthesis of Monoallylation Products**

Ryozo Shibuya, Lu Lin, Yasuhito Nakahara, Kazushi Mashima, Takashi Ohshima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 53　No. 17　p. 4377-4381　2014/04　Research paper (scientific journal)

1,4-Bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadienes as Strong Salt-Free Reductants for Generating Low-Valent Early Transition Metals with Electron-Donating Ligands

Teruhiko Saito, Haruka Nishiyama, Hiromasa Tanahashi, Kento Kawakita, Hayato Tsurugi, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 136　No. 13　p. 5161-5170　2014/04　Research paper (scientific journal)

Transition-metal clusters as catalysts for chemoselective transesterification of alcohols in the presence of amines

Kazushi Mashima, Yukiko Hayashi, Kazushi Agura, Takashi Ohshima

PURE AND APPLIED CHEMISTRY　Vol. 86　No. 3　p. 335-343　2014/03　Research paper (scientific journal)

Iridium-catalyzed Asymmetric Hydrogenation of Pyridinium Salts for Constructing Multiple Stereogenic Centers on Piperidines

Yusuke Kita, Atsuhiro Iimuro, Shoji Hida, Kazushi Mashima

CHEMISTRY LETTERS　Vol. 43　No. 3　p. 284-286　2014/03　Research paper (scientific journal)

Hydrogenation of amides catalyzed by a combined catalytic system of a Ru complex with a zinc salt

Yusuke Kita, Takafumi Higuchi, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 50　No. 76　p. 11211-11213　2014　Research paper (scientific journal)

Direct functionalization of unactivated C-H bonds catalyzed by group 3-5 metal alkyl complexes

Hayato Tsurugi, Koji Yamamoto, Haruki Nagae, Hiroshi Kaneko, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 43　No. 6　p. 2331-2343　2014　Research paper (scientific journal)

ADDITIVE EFFECTS ON ASYMMETTRIC HYDROGENATION OF N-HETEROAROMATICS

Takuto Nagano, Atsuhiro Iimuro, Kenta Yamaji, Yusuke Kita, Kazushi Mashima

HETEROCYCLES　Vol. 88　No. 1　p. 103-127　2014/01

Combined Catalytic System of Scandium Triflate and Boronic Ester for Amide Bond Cleavage

Yusuke Kita, Yuji Nishii, Akihiro Onoue, Kazushi Mashima

ADVANCED SYNTHESIS & CATALYSIS　Vol. 355　No. 17　p. 3391-3395　2013/11　Research paper (scientific journal)

Hemilabile N-Xylyl-N '-methylperimidine Carbene Iridium Complexes as Catalysts for C-H Activation and Dehydrogenative Silylation: Dual Role of N-Xylyl Moiety for ortho-C-H Bond Activation and Reductive Bond Cleavage

Gyeongshin Choi, Hayato Tsurugi, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 35　p. 13149-13161　2013/09　Research paper (scientific journal)

Dehydrogenative silylation catalyzed by iridium complexes with hemilabile neutral and monoanioic perimidine-based carbene ligands

Hayato Tsurugi, Kazushi Mashima, Gyeongshin Choi

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 246　2013/09

C-H Metalation Reaction of Diarylamine and Carbazole by Alkylaluminum Complexes at the Heteroatom-Bridged Dimeric Aluminum Core

Koji Yamamoto, Yu Shibata, Yuki Kashiwa, Ai Kondo, Hayato Tsurugi, Kazushi Mashima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　Vol. 2013　No. 22-23　p. 3821-3825　2013/08　Research paper (scientific journal)

Rh-Catalyzed Direct Enantioselective Alkynylation of -Ketiminoesters

Kazuhiro Morisaki, Masanao Sawa, Jun-ya Nomaguchi, Hiroyuki Morimoto, Yosuke Takeuchi, Kazushi Mashima, Takashi Ohshima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 19　No. 26　p. 8417-8420　2013/06　Research paper (scientific journal)

Salt-Free Reducing Reagent of Bis(trimethylsilyl)cyclohexadiene Mediates Multielectron Reduction of Chloride Complexes of W(VI) and W(IV)

Hayato Tsurugi, Hiromasa Tanahashi, Haruka Nishiyama, Waldemar Fegler, Teruhiko Saito, Andreas Sauer, Jun Okuda, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 16　p. 5986-5989　2013/04　Research paper (scientific journal)

Enzyme-Like Catalysis via Ternary Complex Mechanism: Alkoxy-Bridged Dinuclear Cobalt Complex Mediates Chemoselective O-Esterification over N-Amidation

Yukiko Hayashi, Stefano Santoro, Yuki Azuma, Fahmi Himo, Takashi Ohshima, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 16　p. 6192-6199　2013/04　Research paper (scientific journal)

Synthesis of Rare-Earth-Metal Iminopyrrolyl Complexes from Alkyl Precursors: Ln -> Al N-Ancillary Ligand Transfer

Hiroshi Kaneko, H. Martin Dietrich, Christoph Schaedle, Caecilia Maichle-Moessmer, Hayato Tsurugi, Karl W. Tornroos, Kazushi Mashima, Reiner Anwander

ORGANOMETALLICS　Vol. 32　No. 5　p. 1199-1208　2013/03　Research paper (scientific journal)

Switching the Lactide Polymerization Activity of a Cerium Complex by Redox Reactions

Sauer A, Buffet J.-C, Spaniol T.P, Nagae H, Mashima K, Okuda J

ChemCatChem　Vol. 5　No. 5　p. 1088-1091　2013

Unique stepwise substitution reaction of a mono(guanidinate)tetraplatinum complex with amidines, giving mono(amidinate)tetraplatinum complexes through mixed-ligand intermediate complexes

Shinji Tanaka, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 42　No. 8　p. 2831-2840　2013　Research paper (scientific journal)

Tetraplatinum cluster complexes bearing hydrophilic anchors as precursors for gamma-Al2O3-supported platinum nanoparticles

Shinji Tanaka, Naoto Nagata, Naoki Tagawa, Hirohito Hirata, Shin-ichi Matsumoto, Hayato Tsurugi, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 42　No. 35　p. 12662-12666　2013　Research paper (scientific journal)

Reaction of [eta(1):eta(5)-(Me2NCH2CH2)C2B9H10]TaMe3 with aryl isonitriles: tantallacarborane-mediated facile cleavage of C-N multiple bonds

Li Xiang, Kazushi Mashima, Zuowei Xie

CHEMICAL COMMUNICATIONS　Vol. 49　No. 79　p. 9039-9041　2013　Research paper (scientific journal)

Isospecific polymerization of 1-hexene by C-1-symmetric half-metallocene dimethyl complexes of group 4 metals with bidentate N-substituted iminomethylpyrrolyl ligands

Takahiro Yasumoto, Keishi Yamamoto, Hayato Tsurugi, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 42　No. 25　p. 9120-9128　2013　Research paper (scientific journal)

Asymmetric Hydrogenation of Isoquinolinium Salts Catalyzed by Chiral Iridium Complexes: Direct Synthesis for Optically Active 1,2,3,4-Tetrahydroisoquinolines

Atsuhiro Iimuro, Kenta Yamaji, Sathaiah Kandula, Takuto Nagano, Yusuke Kita, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 52　No. 7　p. 2046-2050　2013

Platinum-Catalyzed Direct Amination of Allylic Alcohols

Takashi Ohshima, Kazushi Mashima

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 70　No. 11　p. 1145-1156　2012/11　Research paper (scientific journal)

Aluminum Triflate as a Powerful Catalyst for Direct Amination of Alcohols, Including Electron-Withdrawing Group-Substituted Benzhydrols

Takashi Ohshima, Junji Ipposhi, Yasuhito Nakahara, Ryozo Shibuya, Kazushi Mashima

ADVANCED SYNTHESIS & CATALYSIS　Vol. 354　No. 13　p. 2447-2452　2012/09　Research paper (scientific journal)

Additive Effects of Amines on Asymmetric Hydrogenation of Quinoxalines Catalyzed by Chiral Iridium Complexes

Takuto Nagano, Atsuhiro Iimuro, Rino Schwenk, Takashi Ohshima, Yusuke Kita, Antonio Togni, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 18　No. 37　p. 11578-11592　2012/09

Reductive cleavage of carbon-halogen bonds mediated by (a-diimine)MCl3 (M = Ta and Nb) complexes through ligand-based redox events

Teruhiko Saito, Hiromasa Tanahashi, Haruka Nishiyama, Hayato Tsurugi, John Arnold, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 244　2012/08

C-H bond activation of imine-based substrates by (acetate)iridium complexes with perimidine-based carbene ligands

Gyeongshin Choi, Kazushi Mashima, Hayato Tsurugi

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 244　2012/08

Synthesis, Characterization, and Lactide Polymerization Activity of Group 4 Metal Complexes Containing Two Bis(phenolate) Ligands

Andreas Sauer, Jean-Charles Buffet, Thomas P. Spaniol, Haruki Nagae, Kazushi Mashima, Jun Okuda

INORGANIC CHEMISTRY　Vol. 51　No. 10　p. 5764-5770　2012/05　Research paper (scientific journal)

General Asymmetric Hydrogenation of 2-Alkyl- and 2-Aryl-Substituted Quinoxaline Derivatives Catalyzed by Iridium-Difluorphos: Unusual Halide Effect and Synthetic Application

Damien Cartigny, Farouk Berhal, Takuto Nagano, Phannarath Phansavath, Tahar Ayad, Jean-Pierre Genet, Takashi Ohshima, Kazushi Mashima, Virginie Ratovelomanana-Vidal

JOURNAL OF ORGANIC CHEMISTRY　Vol. 77　No. 10　p. 4544-4556　2012/05　Research paper (scientific journal)

Dianion and Monoanion Ligation of 1,4-Diaza-1,3-butadiene to Barium, Strontium, and Calcium

Tarun K. Panda, Hiroshi Kaneko, Olaf Michel, Kuntal Pal, Hayato Tsurugi, Karl W. Tornroos, Reiner Anwander, Kazushi Mashima

ORGANOMETALLICS　Vol. 31　No. 8　p. 3178-3184　2012/04　Research paper (scientific journal)

Synthesis of Ir[mu 2-(N-N)]M (M = Ir and Ru) Homo- and Heterobimetallic Complexes through a Condensation Reaction of N-Amino and Formyl Groups Bound to Mononuclear (eta n-CnMen)M Units (n=5 for M = Ir; n=6 for M = Ru)

Keisuke Nakao, Gyeongshin Choi, Yuki Konishi, Hayato Tsurugi, Kazushi Mashima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 9　p. 1469-1476　2012/03　Research paper (scientific journal)

Preparation and Structure of Iminopyrrolyl and Amidopyrrolyl Complexes of Group 2 Metals

Tarun K. Panda, Keishi Yamamoto, Koji Yamamoto, Hiroshi Kaneko, Yi Yang, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 31　No. 6　p. 2268-2274　2012/03　Research paper (scientific journal)

Diene Dissolution of the Heavier Alkaline Earth Metals

Olaf Michel, Hiroshi Kaneko, Hayato Tsurugi, Koji Yamamoto, Karl W. Tornroos, Reiner Anwander, Kazushi Mashima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 6　p. 998-1003　2012/02　Research paper (scientific journal)

Efficient cyclic carbonate synthesis catalyzed by zinc cluster systems under mild conditions

Yang Yi, Hayashi Yukiko, Fujii Yuka, Nagano Takuto, Kita Yusuke, Ohshima Takashi, Okuda Jun, Mashima Kazushi

CATALYSIS SCIENCE & TECHNOLOGY　Vol. 2　No. 3　p. 509-513　2012

Zinc-Catalyzed Amide Cleavage and Esterification of beta-Hydroxyethylamides

Yusuke Kita, Yuji Nishii, Takafumi Higuchi, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 51　No. 23　p. 5723-5726　2012　Research paper (scientific journal)

Sodium methoxide: a simple but highly efficient catalyst for the direct amidation of esters

Takashi Ohshima, Yukiko Hayashi, Kazushi Agura, Yuka Fujii, Asako Yoshiyama, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 48　No. 44　p. 5434-5436　2012　Research paper (scientific journal)

Transesterification of alpha-Amino Esters Catalyzed by a Tetranuclear Zinc Cluster: Zn-4(OCOCF3)(6)O

Yusuke Maegawa, Kazushi Agura, Yukiko Hayashi, Takashi Ohshima, Kazushi Mashima

SYNLETT　Vol. 23　No. 1　p. 137-141　2012/01　Research paper (scientific journal)

Platinum-Catalyzed Direct Amination of Allylic Alcohols with Aqueous Ammonia: Selective Synthesis of Primary Allylamines

Kalpataru Das, Ryozo Shibuya, Yasuhito Nakahara, Nicolas Germain, Takashi Ohshima, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 51　No. 1　p. 150-154　2012　Research paper (scientific journal)

End-Functionalized Polymerization of 2-Vinylpyridine through Initial C-H Bond Activation of N-Heteroaromatics and Internal Alkynes by Yttrium Ene-Diamido Complexes

Hiroshi Kaneko, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 49　p. 19626-19629　2011/12　Research paper (scientific journal)

Synthesis and Reaction of Neutral and Cationic Alkyltantalum Complexes with a Linked Cyclopentadienyl-Carboranyl Ligand

Hayato Tsurugi, Zaozao Qiu, Koji Yamamoto, Rocio Arteaga-Mueller, Kazushi Mashima, Zuowei Xie

ORGANOMETALLICS　Vol. 30　No. 21　p. 5960-5964　2011/11　Research paper (scientific journal)

Interaction of Ferrocene Moieties Across a Square Pt-4 Unit: Synthesis, Characterization, and Electrochemical Properties of Carboxylate-Bridged Bimetallic Pt4Fen, (n=2, 3, and 4) Complexes

Shinji Tanaka, Kazushi Mashima

INORGANIC CHEMISTRY　Vol. 50　No. 22　p. 11384-11393　2011/11　Research paper (scientific journal)

Carbon Radical Generation by d(0) Tantalum Complexes with alpha-Diimine Ligands through Ligand-Centered Redox Processes

Hayato Tsurugi, Teruhiko Saito, Hiromasa Tanahashi, John Arnold, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 46　p. 18673-18683　2011/11　Research paper (scientific journal)

Additive Effect of N-Heteroaromatics on Transesterification Catalyzed by Tetranuclear Zinc Cluster

Maegawa Yusuke, Ohshima Takashi, Hayashi Yukiko, Agura Kazushi, Iwasaki Takanori, Mashima Kazushi

ACS CATALYSIS　Vol. 1　No. 10　p. 1178-1182　2011/10

Synthesis and reactivity of 1,4-diaza-1,3-butadiene complexes of group 3 metals

Hiroshi Kaneko, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 242　2011/08

Synthesis, structure and DFT calculation of a hexanuclear mixed-valence copper cluster supported by 2,3-disulfidobenzoate and 3-carboxybenzene-1,2-bis(thiolate)

Kuntal Pal, Satoshi Takamizawa, Kazushi Mashima

INORGANICA CHIMICA ACTA　Vol. 373　No. 1　p. 68-72　2011/07　Research paper (scientific journal)

Reactivity of Permethylated Magnesium Complexes toward beta-Diimines

Olaf Michel, Koji Yamamoto, Hayato Tsurugi, Caecilia Maichle-Moessmer, Karl W. Toernroos, Kazushi Mashima, Reiner Anwander

ORGANOMETALLICS　Vol. 30　No. 14　p. 3818-3825　2011/07　Research paper (scientific journal)

Redox behavior of group 5 metal complexes with 1,4-diaza-1,3-butadiene ligands and their activity for carbon-halogen bond activation

Hayato Tsurugi, Teruhiko Saito, Hiromasa Tanahashi, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 241　2011/03

Rational Synthesis of Supramolecular Assemblies Based on Tetraplatinum Units: Synthesis, Characterization, and Selective Substitution Reactions of Four Different Pt-4 Clusters

Shinji Tanaka, Akihiro Yagyu, Masashi Kikugawa, Masato Ohashi, Tsuneaki Yamagata, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 17　No. 13　p. 3693-3709　2011/03　Research paper (scientific journal)

Coupling reaction of 2-alkylpyridine with alkynes catalyzed by alkylhafnium complexes

Hayato Tsurugi, Koji Yamamoto, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 241　2011/03

Oxidant-Free Direct Coupling of Internal Alkynes and 2-Alkylpyridine via Double C-H Activations by Alkylhafnium Complexes

Hayato Tsurugi, Koji Yamamoto, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 4　p. 732-735　2011/02　Research paper (scientific journal)

A trifluoroacetic acid adduct of a trifluoroacetate-bridged mu(4)-oxo-tetranuclear zinc cluster, Zn-4(OCOCF3)(6)O center dot CF3CO2H: synthesis under mild conditions and catalytic transesterification and oxazoline formation

Hayashi Yukiko, Ohshima Takashi, Fujii Yuka, Matsushima Yoshimasa, Mashima Kazushi

CATALYSIS SCIENCE & TECHNOLOGY　Vol. 1　No. 2　p. 230-233　2011

Direct substitution of the hydroxy group with highly functionalized nitrogen nucleophiles catalyzed by Au(III)

Takashi Ohshima, Yasuhito Nakahara, Junji Ipposhi, Yoshiki Miyamoto, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 47　No. 29　p. 8322-8324　2011　Research paper (scientific journal)

Dinuclear molybdenum cluster-catalyzed radical addition and polymerization reactions by tuning the redox potential of a quadruple bonded Mo-2 core

Hayato Tsurugi, Kohei Yamada, Moumita Majumdar, Yoshitaka Sugino, Akio Hayakawa, Kazushi Mashima

DALTON TRANSACTIONS　Vol. 40　No. 37　p. 9358-9361　2011　Research paper (scientific journal)

C-1-Symmetric Rh/Phebox-Catalyzed Asymmetric Alkynylation of alpha-Ketoesters

Takashi Ohshima, Takahito Kawabata, Yosuke Takeuchi, Takahiro Kakinuma, Takanori Iwasaki, Takayuki Yonezawa, Hajime Murakami, Hisao Nishiyama, Kazushi Mashima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 50　No. 28　p. 6296-6300　2011　Research paper (scientific journal)

First isolation of fully delocalized mixed-valent imido-bridged [Ti-2](7+) complexes by one-electron reduction of [(C5R5)TiCl](2)(mu-NAr)(2)

Hayato Tsurugi, Haruki Nagae, Kazushi Mashima

CHEMICAL COMMUNICATIONS　Vol. 47　No. 19　p. 5620-5622　2011　Research paper (scientific journal)

Solvent-Dependent cis/trans Isomerism at the Paddlewheel Mo-2 Core of Linear Tetranuclear Clusters of Mo-II and Cu-I Supported by 6-(Diphenylphosphanyl)pyridin-2-olate (pyphos)

Kuntal Pal, Keisuke Nakao, Kazushi Mashima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 36　p. 5668-5674　2010/12　Research paper (scientific journal)

C-H bond activation of N-heterocyclic carbene IMes by rare-earth metal alkyl complexes

Waldemar Fegler, Teruhiko Saito, Kazushi Mashima, Thomas P. Spaniol, Jun Okuda

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 695　No. 25-26　p. 2794-2797　2010/12　Research paper (scientific journal)

Carboxylate Ligand-Induced Intramolecular C-H Bond Activation of Iridium Complexes with N-Phenylperimidine-Based Carbene Ligands

Hayato Tsurugi, Shingo Fujita, Gyeongshin Choi, Tsuneaki Yamagata, Syoji Ito, Hiroshi Miyasaka, Kazushi Mashima

ORGANOMETALLICS　Vol. 29　No. 18　p. 4120-4129　2010/09　Research paper (scientific journal)

Iridium-Difluorphos-Catalyzed Asymmetric Hydrogenation of 2-Alkyl- and 2-Aryl-Substituted Quinoxalines: A General and Efficient Route into Tetrahydroquinoxalines

Damien Cartigny, Takuto Nagano, Tahar Ayad, Jean-Pierre Genet, Takashi Ohshima, Kazushi Mashima, Virginie Ratovelomanana-Vidal

ADVANCED SYNTHESIS & CATALYSIS　Vol. 352　No. 11-12　p. 1886-1891　2010/08　Research paper (scientific journal)

Intramolecular Alkylation of alpha-Diimine Ligands Giving Amido-Imino and Diamido Scandium and Yttrium Complexes as Catalysts for Intramolecular Hydroamination/Cyclization

Hiroshi Kaneko, Hayato Tsurugi, Tarun K. Panda, Kazushi Mashima

ORGANOMETALLICS　Vol. 29　No. 15　p. 3463-3466　2010/08　Research paper (scientific journal)

Salt Metathesis and Direct Reduction Reactions Leading to Group 3 Metal Complexes with a N,N '-Bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene Ligand and Their Solid-State Structures

Tarun K. Panda, Hiroshi Kaneko, Kuntal Pal, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 29　No. 11　p. 2610-2615　2010/06　Research paper (scientific journal)

Silicon-Bridged Tetramethylcyclopentadienyl-Phenoxy Complexes of Tantalum: Preparation and Alkylation of Et2Si(eta(5)-C5Me4)(3-Bu-t-5-Me-2-C6H2O)TaCl3 and Generation of Its Cationic Complex

Taichi Senda, Hidenori Hanaoka, Yoshiaki Oda, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 29　No. 9　p. 2080-2084　2010/05　Research paper (scientific journal)

Linearly Aligned Metal Clusters: Versatile Reactivity and Bonding Nature of Tetrametal M-Mo-Mo-M Complexes (M = Pt, Pd, Ir, and Rh) Supported by 6-Diphenylphosphino-2-pyridonato Ligand

Kazushi Mashima

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 83　No. 4　p. 299-312　2010/04

Rational Design of Silicon-Bridged Fluorenyl-Phenoxy Group 4 Metal Complexes as Catalysts for Producing High Molecular Weight Copolymers of Ethylene and 1-Hexene at Elevated Temperature

Taichi Senda, Hidenori Hanaoka, Shinya Nakahara, Yoshiaki Oda, Hayato Tsurugi, Kazushi Mashima

MACROMOLECULES　Vol. 43　No. 5　p. 2299-2306　2010/03　Research paper (scientific journal)

Simple, general, and highly chemoselective acylation of alcohols catalyzed by tetranuclear zinc cluster

Takashi Ohshima, Takanori Iwasaki, Yusuke Maegawa, Yukiko Hayashi, Kazushi Agura, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 239　2010/03

Platinum-catalyzed direct amination of allylic alcohols under mild conditions

Takashi Ohshima, Yoshiki Miyamoto, Junji Ipposhi, Yasuhito Nakahara, Masaru Utsunomiya, Kazushi Mashima

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 239　2010/03

Highly Reactive Metal-Nitrogen Bond Induced C-H Bond Activation and Azametallacycle Formation

Tarun K. Panda, Hayato Tsurugi, Kuntal Pal, Hiroshi Kaneko, Kazushi Mashima

ORGANOMETALLICS　Vol. 29　No. 1　p. 34-37　2010/01　Research paper (scientific journal)

A Tetranuclear-Zinc-Cluster-Catalyzed Practical and Versatile Deprotection of Acetates and Benzoates

Takanori Iwasaki, Kazushi Agura, Yusuke Maegawa, Yukiko Hayashi, Takashi Ohshima, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 16　No. 38　p. 11567-11571　2010　Research paper (scientific journal)

Titanium Complexes of Silicon-Bridged Cyclopentadienyl-Phenoxy Ligands Modified with Fused-Thiophene: Synthesis, Characterization, and Their Catalytic Performance in Copolymerization of Ethylene and 1-Hexene

Taichi Senda, Hidenori Hanaoka, Yoshiya Okado, Yoshiaki Oda, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 28　No. 24　p. 6915-6926　2009/12

Asymmetric Hydrogenation of Heteroaromatic Ketones and Cyclic and Acyclic Enones Mediated by Cu(I)-Chiral Diphosphine Catalysts

Hideo Shimizu, Takuto Nagano, Noboru Sayo, Takao Saito, Takashi Ohshima, Kazushi Mashima

SYNLETT　No. 19　p. 3143-3146　2009/12　Research paper (scientific journal)

Substituent Effects on Silicon of Bridged Tetramethylcyclopentadienyl-Phenoxy Titanium Complexes for Controlling the Regiochemistry and Molecular Weight in 1-Olefin Polymerization

Taichi Senda, Hidenori Hanaoka, Takahiro Hino, Yoshiaki Oda, Hayato Tsurugi, Kazushi Mashima

MACROMOLECULES　Vol. 42　No. 21　p. 8006-8009　2009/11　Research paper (scientific journal)

Platinum-Catalyzed Direct Amination of Allylic Alcohols under Mild Conditions: Ligand and Microwave Effects, Substrate Scope, and Mechanistic Study

Takashi Ohshima, Yoshiki Miyamoto, Junji Ipposhi, Yasuhito Nakahara, Masaru Utsunomiya, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 40　p. 14317-14328　2009/10　Research paper (scientific journal)

Synthesis and Characterization of Proximal Dinuclear Complexes of Palladium Supported by 2,6-Bis(arylimino)phenoxy (aryl = 2,6-diisopropylphenyl and 2,4,6-tri-tert-butylphenyl) and 3,6-Bis(imino(2,6-diisopropylphenyl))pyridazine Ligands

Kouji Ohno, Kenji Arima, Shinji Tanaka, Tsuneaki Yamagata, Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 28　No. 11　p. 3256-3263　2009/06　Research paper (scientific journal)

A Simple, General, and Highly Chemoselective Acetylation of Alcohols Using Ethyl Acetate as the Acetyl Donor Catalyzed by a Tetranuclear Zinc Cluster

Takanori Iwasaki, Yusuke Maegawa, Yukiko Hayashi, Takashi Ohshima, Kazushi Mashima

SYNLETT　No. 10　p. 1659-1663　2009/06　Research paper (scientific journal)

Development of Environmentally Benign Catalytic Reactions Using Tetranuclear Zinc Clusters

Takashi Ohshima, Takanori Iwasaki, Kazushi Mashima

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 67　No. 5　p. 494-506　2009/05

New Tantalum Ligand-Free Catalyst System for Highly Selective Trimerization of Ethylene Affording 1-Hexene: New Evidence of a Metallacycle Mechanism

Rocio Arteaga-Mueller, Hayato Tsurugi, Teruhiko Saito, Masao Yanagawa, Seiji Oda, Kazushi Mashima

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 15　p. 5370-+　2009/04　Research paper (scientific journal)

Oxidative reactions of tetrametal Pd(0) ⋯ Mo(ll)-Mo(ll) ⋯ Pd(0) Clusters: Electrochemical Communication of Two Pd(0) Centers through the Mo2 Moiety and Oxidative Formation of a Pd(l)-Mo(ll)-Mo(ll)-Pd(l) Array

Kazushi Mashima, Asuka Shima, Keisuke Nakao, Atsushi Fukumoto, Yutaka Kaneda, Yoshitaka Kusumi

Inorganic Chemistry　Vol. 48　No. 5　p. 1879-1886　2009/03/02　Research paper (scientific journal)

Oxidative Reactions of Tetrametal Pd(0)center dot center dot center dot Mo(II)-Mo(II)center dot center dot center dot Pd(0) Clusters: Electrochemical Communication of Two Pd(0) Centers through the Mo-2 Moiety and Oxidative Formation of a Pd(I)-Mo(II)-Mo(II)-Pd(I) Array

Kazushi Mashima, Asuka Shima, Keisuke Nakao, Atsushi Fukumoto, Yutaka Kaneda, Yoshitaka Kusurni

INORGANIC CHEMISTRY　Vol. 48　No. 5　p. 1879-1886　2009/03　Research paper (scientific journal)

Tantalum-Benzylidene Complexes Supported by C5Me5 and Diazadiene Ligands: Synthesis, Kinetic Analysis of the Formation, and Reactive Studies

Hayato Tsurugi, Takashi Ohno, Tsuyoshi Kanayama, Rocio A. Arteaga-Mueller, Kazushi Mashima

ORGANOMETALLICS　Vol. 28　No. 6　p. 1950-1960　2009/03　Research paper (scientific journal)

Controlled Benzylation of alpha-Diimine Ligands Bound to Zirconium and Hafnium: An Alternative Method for Preparing Mono- and Bis(amido)M(CH2Ph)(n) (n=2, 3) Complexes as Catalyst Precursors for Isospecific Polymerization of alpha-Olefins

Hayato Tsurugi, Ryuji Ohnishi, Hiroshi Kaneko, Tarun K. Panda, Kazushi Mashima

ORGANOMETALLICS　Vol. 28　No. 3　p. 680-687　2009/02　Research paper (scientific journal)

Unprecedented Halide Dependence on Catalytic Asymmetric Hydrogenation of 2-Aryl- and 2-Alkyl-Substituted Quinolinium Salts by Using Ir Complexes with Difluorphos and Halide Ligands

Hiroshi Tadaoka, Damien Cartigny, Takuto Nagano, Tushar Gosavi, Tahar Ayad, Jean-Pierre Genet, Takashi Ohshima, Virginie Ratovelomanana-Vidal, Kazushi Mashima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 15　No. 39　p. 9990-9994　2009　Research paper (scientific journal)

Theoretical study of Al(III)-catalyzed conversion of glyoxal to glycolic acid: dual activated 1,2-hydride shift mechanism by protonated Al(OH)(3) species

Takashi Ohshima, Yoshihiro Yamamoto, Usaji Takaki, Yoshihisa Inoue, Takuya Saeki, Kenji Itou, Yusuke Maegawa, Takanori Iwasaki, Kazushi Mashima

CHEMICAL COMMUNICATIONS　No. 19　p. 2688-2690　2009　Research paper (scientific journal)

Rare-Earth Metal Bis(dimethylsilyl)amide Complexes Supported by Cyclooctatetraenyl Ligands

Christian Meermann, Kouji Ohno, Karl W. Toernroos, Kazushi Mashima, Reiner Anwander

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 1　p. 76-85　2009/01　Research paper (scientific journal)

Zinc-catalyzed cycloisomerizations. Synthesis of substituted furans and furopyrimidine nucleosides

Adam Sniady, Audrey Durham, Marco S. Morreale, Andrzej Marcinek, Slawomir Szafert, Tadeusz Lis, Krystyna R. Brzezinska, Takanori Iwasaki, Takashi Ohshima, Kazushi Mashima, Roman Dembinski

JOURNAL OF ORGANIC CHEMISTRY　Vol. 73　No. 15　p. 5881-5889　2008/08

Transesterification of various methyl esters under mild conditions catalyzed by tetranuclear zinc cluster

Takanori Iwasaki, Yusuke Maegawa, Yukiko Hayashi, Takashi Ohshima, Kazushi Mashima

JOURNAL OF ORGANIC CHEMISTRY　Vol. 73　No. 13　p. 5147-5150　2008/07　Research paper (scientific journal)

Stepwise and one-pot syntheses of Ir(III) complexes with imidazolium-based carbene ligands

Chih-Hsien Chien, Singo Fujita, Suguru Yamoto, Takeshi Hara, Tsuneaki Yamagata, Masami Watanabe, Kazushi Mashima

DALTON TRANSACTIONS　No. 7　p. 916-923　2008　Research paper (scientific journal)

Novel Ir-SYNPHOS (R) and Ir-DIFLUORPHOS (R) catalysts for asymmetric hydrogenation of Quinolines

Coralie Deport, Marie Buchotte, Keren Abecassis, Hiroshi Tadaoka, Tahar Ayad, Takashi Ohshima, Jean-Pierre Genet, Kazushi Mashima, Virginie Ratovelomanana-Vidal

SYNLETT　No. 17　p. 2743-2747　2007/10　Research paper (scientific journal)

Di-mu-iodido-bis[(eta(4)-cycloocta-1,5-diene)iridium(I)]

Tsuneaki Yamagata, Mitsuhiro Nagata, Kazushi Mashima, Kazuhide Tani

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE　Vol. 63　p. M2402-U1406　2007/09　Research paper (scientific journal)

Linear metal-metal-bonded tetranuclear M-Mo-Mo-M complexes (M = Ir and Rh): Oxidative metal-metal bond formation in a tetrametallic system and 1,4-addition reaction of alkyl halides

Masato Ohashi, Asuka Shima, Tobias Rueffer, Hitoshi Mizomoto, Yutaka Kaneda, Kazushi Mashima

INORGANIC CHEMISTRY　Vol. 46　No. 16　p. 6702-6714　2007/08

Di-mu-bromido-bis[(eta(4)-cycloocta-1,5-diene)iridium(I)]

Tsuneaki Yamagata, Mitsuhiro Nagata, Kazushi Mashima, Kazuhide Tani

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE　Vol. 63　p. M1498-U425　2007/05　Research paper (scientific journal)

Chlorido(6-diphenylphosphino-2-pyridonato-kappa P-2,N)(6-diphenylphosphino-2-hydroxypyridine-kappa P-2,N)hydridoiridium(III) chloroform 1.896-solvate

Takayuki Miyabayashi, Takeshi Hara, Tsuneaki Yamagata, Kazushi Mashima

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE　Vol. 63　p. M576-M578　2007/02　Research paper (scientific journal)

Preferential geometry and reactivity of neutral iridium(III) and rhodium(III) complexes bearing a flexible heterochelate PN ligand (PN = o-Ph2PC6H4CH2OCH2C5H4N-2)

Takeshi Hara, Tsuneaki Yamagata, Kazushi Mashima, Yasutaka Kataoka

ORGANOMETALLICS　Vol. 26　No. 1　p. 110-118　2007/01　Research paper (scientific journal)

Tetraplatinum precursors for supramolecular assemblies: syntheses, crystal structures, and stereoselective self-assemblies of [Pt-4(mu-OCOCH3)(6)(kappa(4)-N-4-DArBp)] (DArBp=1,3bis(arylbenzamidinate) propane)

Masato Ohashi, Akihiro Yagyu, Tsuneaki Yamagata, Kazushi Mashima

CHEMICAL COMMUNICATIONS　No. 29　p. 3103-3105　2007　Research paper (scientific journal)

Formation of a dative bond between Pt-0 and Mo-II in linear Pt-0-Mo-II-Mo-II-Pt-0 complexes, (Mo2Pt20)-Pt-II(pyphos)(4)(PR3)(2), and unique 1,4-oxidative addition reaction of diaryl disulfides giving (Mo2Pt2I)-Pt-II(pyphos)(4)(SAr)(2) (pyphos=6-diphenylphosphanyl-2-pyridonato)

Kazushi Mashima, Yuuji Shimoyama, Yoshitaka Kusumi, Atsushi Fukumoto, Tsuneaki Yamagata, Masato Ohashi

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 2　p. 235-238　2007/01　Research paper (scientific journal)

Surface modification of n-Si(111) electrodes with brominated and sulfonylated alkyl chains and their photoelectrochemical characteristics

Masato Ohashi, Yoshihiro Nakato, Kazushi Mashima

CHEMISTRY LETTERS　Vol. 35　No. 12　p. 1360-1361　2006/12　Research paper (scientific journal)

pi-Conjugated alpha,omega-diphenylpolyene complexes of RuClCp* fragment(s) in eta(4)-s-cis conformation

Hiroki Fukumoto, Kazushi Mashima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 24　p. 5006-5011　2006/12　Research paper (scientific journal)

Preparation and characterization of a zwitterionic (iminopyrrolyl) zirconium complex with benzylaluminate anion and its catalytic performance for 1-hexene polymerization

Hayato Tsurugi, Kazushi Mashima

ORGANOMETALLICS　Vol. 25　No. 22　p. 5210-5212　2006/10　Research paper (scientific journal)

Synthesis, structure, and reactivity of tantalum and tungsten homoenolate complexes

Hayato Tsurugi, Takashi Ohno, Tsuneaki Yamagata, Kazushi Mashima

ORGANOMETALLICS　Vol. 25　No. 13　p. 3179-3189　2006/06

Synthesis of monoalkyl complexes of group 4 metal bearing aminopyrrole ligand and their application for olefin polymerization catalyst

Takahiro Yasumoto, Kazushi Mashima

Polymer Preprints, Japan　Vol. 55　No. 2　p. 2695-2696　2006　Research paper (international conference proceedings)

Uniqueness and versatility of iminopyrrolyl ligands for transition metal complexes

K Mashima, H Tsurugi

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 690　No. 20　p. 4414-4423　2005/10　Research paper (scientific journal)

A topological isomer of ferrocene: Theoretical approach for transition metal complexes with conjugated all trans cyclodecapentaene

A Nakamura, T Ohshima, K Mashima

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 690　No. 19　p. 4373-4375　2005/10　Research paper (scientific journal)

Surface structures, photovoltages, and stability of n-Si(111) electrodes surface modified with metal nanodots and various organic groups

S Takabayashi, M Ohashi, K Mashima, Y Liu, S Yamazaki, Y Nakato

LANGMUIR　Vol. 21　No. 19　p. 8832-8838　2005/09　Research paper (scientific journal)

Unique preferential conformation and movement of Ru(acac)(2) fragment(s) coordinated in an eta(4)-s-trans fashion to all diene unit(s) of alpha,omega-diphenylpolyenes

H Fukumoto, K Mashima

ORGANOMETALLICS　Vol. 24　No. 16　p. 3932-3938　2005/08　Research paper (scientific journal)

Isoselective living polymerization of 1-hexene catalyzed by half-metallocene dimethyl complexes of hafnium with bidentate N-substituted (iminomethyl)pyrrolyl ligands

T Yasumoto, T Yamagata, K Mashima

ORGANOMETALLICS　Vol. 24　No. 14　p. 3375-3377　2005/07　Research paper (scientific journal)

α-olefin polymerization behavior of zirconium and hafnium complexes bearing iminopyrrolyl ligand

Hayato Tsurugi, Kazushi Mashima

Polymer Preprints, Japan　Vol. 54　No. 2　2005　Research paper (international conference proceedings)

Stereospecific polymerization of α-olefin catalyzed by half-metallocene complexes of 4 group metal supported by bidentate iminopyrrolyl ligands

Takahiro Yasumoto, Kazushi Mashima

Polymer Preprints, Japan　Vol. 54　No. 2　2005　Research paper (international conference proceedings)

Polymerization of α-olefin catalyzed by half-metallocene complexes of hafnium supported by bidentate iminopyrrolyl ligands

Takahiro Yasumoto, Kazushi Mashima

Polymer Preprints, Japan　Vol. 54　No. 1　2005　Research paper (international conference proceedings)

Synthesis and 1-hexene polymerization performance of group 4 metal benzyl complexes bearing iminopyrrolyl ligand

Hayato Tsurugi, Kazushi Mashima

Polymer Preprints, Japan　Vol. 54　No. 1　2005　Research paper (international conference proceedings)

An infinite zigzag chain of alternating Cl-Pd-Pd-Cl and Mo-Mo units

JJ Yi, T Miyabayashi, M Ohashi, T Yamagata, K Mashima

INORGANIC CHEMISTRY　Vol. 43　No. 21　p. 6596-6599　2004/10　Research paper (scientific journal)

Rhodium and iridium complexes bearing an alkyloxazoline-substituted indenyl ligand (Indox ligand) and their stereoselective construction of metal-centered chirality

Y Kataoka, K Shimada, T Goi, T Yamagata, K Mashima, K Tani

INORGANICA CHIMICA ACTA　Vol. 357　No. 10　p. 2965-2979　2004/07　Research paper (scientific journal)

Unique ring-methyl deprotonation of eta(4)-1,2-dimethyl-3,4-di(tert-butyl)cyclobutadiene complexes of palladium(II) bearing phosphine ligand

K Mashima, D Shimizu, T Yamagata, K Tani

INORGANICA CHIMICA ACTA　Vol. 352　p. 105-109　2003/08　Research paper (scientific journal)

Magnetic effective density functional studies on electronic states of Cr-2(pyphos)(4) and Pt2Cr2(pyphos)(4)(CH3)(4)

Y Kitagawa, S Nakano, T Kawakami, K Mashima, K Yamaguchi

POLYHEDRON　Vol. 22　No. 14-17　p. 2019-2025　2003/07　Research paper (scientific journal)

Adaptable coordination modes of conjugated 1,3-diene: uniqueness of s-trans coordination

K Mashima, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 663　No. 1-2　p. 5-12　2002/12　Research paper (scientific journal)

Ring methyl activation of 1,2-dimethyl-3,4-di(tert-butyl)cyclobutadiene complexes of palladium giving exo-methylene-eta(3)-cyclobutenyl complexes of palladium

K Mashima, D Shimizu, T Yamagata, K Tani

ORGANOMETALLICS　Vol. 21　No. 23　p. 5136-5139　2002/11　Research paper (scientific journal)

Half-metallocene 1-aza-1,3-butadiene complexes of tantalum: Auxiliary ligand effects on controlling coordination modes of 1-aza-1,3-butadiene ligand

Y Matsuo, K Mashima, K Tani

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 75　No. 6　p. 1291-1297　2002/06　Research paper (scientific journal)

Theoretical studies on magnetic interactions of aligned tetrametal systems by using magnetic effective density functional (MEDF) method

Y Kitagawa, S Nakano, T Kawakami, K Mashima, K Tani, K Yamaguchi

MOLECULAR CRYSTALS AND LIQUID CRYSTALS　Vol. 379　p. 525-530　2002　Research paper (scientific journal)

Selective formation of homoleptic and heteroleptic 2,5-bis(N-aryliminomethyl)pyrrolyl yttrium complexes and their performance as initiators of epsilon-caprolactone polymerization

Y Matsuo, K Mashima, K Tani

ORGANOMETALLICS　Vol. 20　No. 16　p. 3510-3518　2001/08　Research paper (scientific journal)

'Supine' or 'prone' ligands: geometric preference of conjugated diene, 1-azadiene, and 1,4-diazadiene ligands on half-metallocene complexes of early transition metals

A Nakamura, K Mashima

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 621　No. 1-2　p. 224-230　2001/03　Research paper (scientific journal)

Half-metallocene tantalum complexes bearing methyl methacrylate (MMA) and 1,4-diaza-1,3-diene ligands as MMA polymerization catalysts

Y Matsuo, K Mashima, K Tani

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 40　No. 5　p. 960-962　2001　Research paper (scientific journal)

Substituent effect on organotin Tp* compounds as the Tp* reagent for the preparation of mono Tp* complexes of group 4-6 metals (Tp* = tris(3,5-dimethylpyrazol-1-yl)hydroborate)

T Oshiki, K Mashima, S Kawamura, K Tani, K Kitaura

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 73　No. 8　p. 1735-1748　2000/08　Research paper (scientific journal)

Convenient synthesis of anionic dinuclear ruthenium(II) complexes [NR2H2][{RuCl(diphosphine)}(2)(mu-Cl)(3)] [diphosphine=2,2 '-bis(diphenylphosphino)-1,1 '-binaphthyl, 2,2 '-bis(di(p-tolyl)phosphino)-1,1 '-binaphthyl, and 1,2-bis(diphenylphosphino)benzene]: crystal structure of [NEt2H2][{RuCl(1,2-bis(diphenylphosphino)benzene)}(2)(mu-Cl)(3)]

K Mashima, T Nakamura, Y Matsuo, K Tani

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 607　No. 1-2　p. 51-56　2000/08　Research paper (scientific journal)

Intelligent gel - Surface properties and functions of gels

Kazushi Mashima

Macromolecular Symposia　Vol. 159　p. 215-220　2000　Research paper (scientific journal)

1-Aza-1,3-butadiene complexes of tantalum: preparation and alkylation of TaCl2(eta(5)-C5Me5)(eta(4)-1-aza-1,3-butadiene)

K Mashima, Y Matsuo, S Nakahara, K Tani

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 593　p. 69-76　2000/01　Research paper (scientific journal)

Which are the polyethylene and Poly(α-olefin)s with the Narrowest Polydispersity?

MASHIMA Kazushi

Kobunshi　Vol. 48　No. 12　p. 942-943　1999/12/01

Preparation, characterization, and reaction of linearly aligned tetranuclear Pd-Mo-Mo-Pd supported by four 6-diphenylphosphino-2-pyridonate ligands.

K Mashima, A Fukumoto, Y Kaneda, K Tani, H Nakano, A Nakamura

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 218　p. U866-U866　1999/08

Novel synthesis of lanthanoid complexes starting from metallic lanthanoid sources

K Mashima, A Nakamura

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS　No. 22　p. 3899-3907　1999　Research paper (scientific journal)

Dative Pd(0)-Mo(II) bonds in a linearly aligned tetrametal system: Preparation, characterization, and reaction of a tetranuclear Pd(0)-Mo(II)-Mo(II)-Pd(0) supported by four 6-diphenylphosphino-2-pyridonate ligands

K Mashima, A Fukumoto, H Nakano, Y Kaneda, K Tani, A Nakamura

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 120　No. 46　p. 12151-12152　1998/11　Research paper (scientific journal)

Dialkylchromium complexes bearing a hydrotris(3,5-dimethylpyrazolyl)borate ligand: synthesis and crystal structures of Tp*CrMe2(DMAP) and Tp*Cr(Cr(CH2Ph)(2)(DMAP) (DMAP = 4-dimethylaminopyridine)

K Mashima, T Oshiki, K Tani, T Aoshima, H Urata

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 569　No. 1-2　p. 15-19　1998/10　Research paper (scientific journal)

Polymerization of ethylene catalyzed by half-metallocene complexes of niobium, tantalum, and zirconium bearing o-xylylene or anthracene as an auxiliary ligand: molecular structure of [Mg2Cl3(THF)(6)][ZrCl2(eta(5)-C5Me5)(eta-1-4-anthracene)]

K Mashima, Y Nakayama, N Ikushima, M Kaidzu, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 566　No. 1-2　p. 111-116　1998/09　Research paper (scientific journal)

Mononuclear eta(8)-cyclooctatetraenyl(thiolato)samarium(III) complexes (eta(8)-C8H8)Sm(SR)(hmpa)(2) (R = 2,4,6-triisopropylphenyl and 2-pyridyl; HMPA = hexamethylphosphoric triamide) derived from metallic samarium, diaryl disulfide, and 1,3,5,7-cyclooctatetraene in the presence of HMPA

K Mashima, T Shibahara, Y Nakayama, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 559　No. 1-2　p. 197-201　1998/05　Research paper (scientific journal)

Half-sandwich complexes of niobium and tantalum bearing o-xylylene, anthracene, or cyclooctatetraene: crystal structures of (eta(5)-C5Me5)Nb{o-(CH2)(2)C6H4}Cl-2, (eta(5)-C5Me5)Ta(eta(4)-anthracene)(CH2Ph)(2), and (eta(5)-C5Me5)Nb(eta(4)-butadiene)(eta(3)-cyclooctatetraene)

K Mashima, Y Nakayama, M Kaidzu, N Ikushima, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 557　No. 1　p. 3-12　1998/04　Research paper (scientific journal)

Unique complexation by the tridentate ligands, 6-diphenylphosphino-2-pyridonate (pyphos) and 6-diphenylphosphino-2-pyridone (pyphosH), on ruthenium(II): crystal structures of (pyphosH)RuCl(mu-Cl)Mo2Cl(pyphos)(3), RuCl2(CO)(pyphosH)(2), [Ru(pyphos)(3)](mu-Na)(2)[Ru(pyphos)(3)]

K Mashima, Y Kaneda, A Fukumoto, M Tanaka, K Tani, H Nakano, A Nakamura

INORGANICA CHIMICA ACTA　Vol. 270　No. 1-2　p. 459-466　1998/04　Research paper (scientific journal)

1,8-Diphenylocta-1,3,5,7-tetraene Complexes of Ruthenium(II)

Kazushi Mashima, Hiroki Fukumoto, Kazuhide Tani, Masa-aki Haga, Akira Nakamura

Organometallics,　Vol. 17　p. 410-414　1998/03　Research paper (scientific journal)

Cationic monocyclooctatetraenyl-lanthanoid complexes derived from metallic lanthanoid: crystal structures of [Sm(eta(8)-C8H8)(hmpa)(3)]I and [Sm(eta(8)-C8H8)(hmpa)(3)][Sm(eta(8)-C8H8)(2)] (HMPA = hexamethylphosphoric triamide)

K Mashima, H Fukumoto, Y Nakayama, K Tani, A Nakamura

POLYHEDRON　Vol. 17　No. 7　p. 1065-1071　1998　Research paper (scientific journal)

Synthesis and reactions of coordinatively unsaturated 16-electron chalcogenolate complexes, Ru(EAr)(2)(eta(6)-arene) and cationic binuclear chalcogenolate complexes, [(eta(6)-arene)Ru(mu-EPh)(3)Ru(eta(6)-arene)]PF6

K Mashima, S Kaneko, K Tani, H Kaneyoshi, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 545　p. 345-356　1997/10　Research paper (scientific journal)

Ligand exchange reactions of a 1,3-butadiene complex of magnesium

K Mashima, Y Matsuo, H Fukumoto, K Tani, H Yasuda, A Nakamura

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 545　p. 549-552　1997/10　Research paper (scientific journal)

An anionic dinuclear BINAP-ruthenium(II) complex: Crystal structure of [NH2Et2][{RuCl((R)-p-MeO-BI-NAP)}(2)(mu-Cl)(3)] and its use in asymmetric hydrogenation (vol 15, pg 1522, 1996)

T Ohta, Y Tonomura, K Nozaki, H Takaya, K Mashima

ORGANOMETALLICS　Vol. 16　No. 15　p. 3568-3568　1997/07

Nonplanar sigma(2),pi- and planar sigma(2)-enediamide coordinations of 1,4-di(p-methoxyphenyl)-1,4-diaza-1,3-butadiene (=MeOC6H4-DAD) on Ta(eta(5)-C5R5) fragments (R=H,Me): Crystal structures of TaCl2(sigma 2,pi-MeOC6H4-dad)(eta(5)-C5H5) and Ta(sigma(2)-MeOC6H4-dad)(eta(5)-C5Me5)(eta(4)-1,3-butadiene)

K Mashima, Y Matsuo, K Tani

CHEMISTRY LETTERS　No. 8　p. 767-768　1997　Research paper (scientific journal)

Lanthanoid complexes of azobenzene and benzo[c]cinnoline derived from metallic lanthanoids: Crystal structures of binuclear [SmI(thf)(3)(mu-eta(2):eta(2)-trans-PhNNPh)SmI(thf)(3)] and mononuclear [Yb(benzo[c]cinnoline)(3)(thf)(2)]

Y Nakayama, A Nakamura, K Mashima

CHEMISTRY LETTERS　No. 8　p. 803-804　1997　Research paper (scientific journal)

cis-iso-specific polymerization of norbornenes by a unique combination of Cp(*) and 1,3-butadiene ligands on tantalum: Crystal structures of Cp(*) (eta(4)-C4H6)Ta(CH(2)Ph)(2) and Cp(*)(eta(4)-C4H6)Ta(=CHPh)(PMe(3))

K Mashima, Y Tanaka, M Kaidzu, A Nakamura

ORGANOMETALLICS　Vol. 15　No. 10　p. 2431-2433　1996/05　Research paper (scientific journal)

Theoretical studies of direct exchange couplings between transition metal ions .2. Naked binuclear chromium(II) and molybdenum (II) systems

M Nishino, M Tanaka, S Takeda, K Mashima, W Mori, K Tani, A Nakamura, K Yamaguchi

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS　Vol. 285　p. 515-522　1996　Research paper (scientific journal)

Theoretical studies of direct exchange couplings between transition metal ions .2. Tetranuclear transition metal systems

M Nishino, M Tanaka, S Takeda, K Mashima, W Mori, K Tani, A Nakamura, K Yamaguchi

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS　Vol. 285　p. 523-532　1996　Research paper (scientific journal)

SYNTHESIS, CHARACTERIZATION AND REACTIONS OF ETHYLENE COMPLEXES BEARING TA(ETA(5)-C(5)R(5))(ETA(4)-BUTA-1,3-DIENE) FRAGMENTS (R=H, ME)

K MASHIMA, Y TANAKA, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 502　No. 1-2　p. 19-23　1995/10　Research paper (scientific journal)

SYNTHESIS AND CHARACTERIZATION OF CATIONIC PYRIDINE-2-THIOLATE COMPLEXES OF LANTHANOID(III) - CRYSTAL-STRUCTURES OF PENTAGONAL BIPYRAMIDAL [LN(SC5H4N)(2)(HMPA)(3)]I (LN=SM, YB, HMPA=HEXAMETHYLPHOSPHORIC TRIAMIDE)

K MASHIMA, T SHIBAHARA, Y NAKAYAMA, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 501　No. 1-2　p. 263-269　1995/10　Research paper (scientific journal)

RECENT PROGRESS IN THE CHEMISTRY OF 1,3-DIENE COMPLEXES OF NIOBIUM AND TANTALUM

A NAKAMURA, K MASHIMA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 500　No. 1-2　p. 261-267　1995/09

LIVING POLYMERIZATION OF ETHYLENE CATALYZED BY DIENE COMPLEXES OF NIOBIUM AND TANTALUM, M(ETA(5)-C(5)ME(5))(ETA(4)-DIENE)X(2) AND M(ETA(5)-C(5)ME(5))(ETA(4)-DIENE)(2)(M= NB AND TA), IN THE PRESENCE OF METHYLALUMINOXANE

K MASHIMA, S FUJIKAWA, Y TANAKA, H URATA, T OSHIKI, E TANAKA, A NAKAMURA

ORGANOMETALLICS　Vol. 14　No. 6　p. 2633-2640　1995/06

CYCLIC AMINES AS INTRAMOLECULAR DONOR LIGANDS IN PI-COMPLEXES OF TITANIUM

WA HERRMANN, MJA MORAWIETZ, T PRIERMEIER, K MASHIMA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 486　No. 1-2　p. 291-295　1995/01　Research paper (scientific journal)

FORMATION OF LANTHANOID(II) AND LANTHANOID(III) THIOLATE COMPLEXES DERIVED FROM METALS AND ORGANIC DISULFIDES - CRYSTAL-STRUCTURES OF [(LN(SAR)(MU-SAR)(THF)(3))(2)] (LN=SM, EU), [SM(SAR)(3)(PY)(2)(THF)] AND [YB(SAR)(3)(PY)(3)] (AR=2,4,6-TRIISOPROPYLPHENYL PY=PYRIDINE)

K MASHIMA, Y NAKAYAMA, H FUKUMOTO, N KANEHISA, Y KAI, A NAKAMURA

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS　No. 21　p. 2523-2524　1994/11　Research paper (scientific journal)

SYNTHESIS OF PARTIALLY HYDROGENATED 2,2'-BIS(DIPHENYLPHOSPHENYL)-1,1'-BINAPHTHYL (BINAP) LIGANDS AND THEIR APPLICATION TO CATALYTIC ASYMMETRIC HYDROGENATION

XY ZHANG, K MASHIMA, K KOYANO, N SAYO, H KUMOBAYASHI, S AKUTAGAWA, H TAKAYA

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1　No. 16　p. 2309-2322　1994/08　Research paper (scientific journal)

A NEW CONVENIENT PREPARATION OF MONOCYCLOOCTATETRAENYL-LANTHANIDE COMPLEXES FROM METALLIC LANTHANIDES AND OXIDANTS

K MASHIMA, Y NAKAYAMA, A NAKAMURA, N KANEHISA, Y KAI, H TAKAYA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 473　No. 1-2　p. 85-91　1994/06　Research paper (scientific journal)

MONOCYCLOOCTATETRAENYL(THIOLATO)SAMARIUM(III) COMPLEXES FROM THE REACTION OF METALLIC SAMARIUM WITH CYCLOOCTATETRAENE AND DIARYLDISULFIDE - CRYSTAL-STRUCTURES OF [SM(MU-SPH)(C8H8)(THF)2]2 AND [(SM[MU-S(2,4,6-TRIISOPROPYLPHENYL)](C8H8)(THF))2]

K MASHIMA, Y NAKAYAMA, N KANEHISA, Y KAI, A NAKAMURA

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS　No. 24　p. 1847-1848　1993/12　Research paper (scientific journal)

PREPARATION, CHARACTERIZATION, AND REACTIONS OF 16-ELECTRON TA(ETA(5)-C5ME5)(ETA(3)-1-PHENYLALLYL)(2)

K MASHIMA, Y YAMANAKA, Y GOHRO, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 459　No. 1-2　p. 131-138　1993/10　Research paper (scientific journal)

SYNTHESIS AND REACTION OF (ETA-5-PENTAMETHYLCYCLOPENTADIENYL)-BIS(ALLYL)TANTALUM(III) COMPLEXES - CRYSTAL-STRUCTURE OF TA(ETA-5-C5ME5)-(ETA-3-1-PHENYLALLYL)2

K MASHIMA, Y YAMANAKA, Y GOHRO, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 455　No. 1-2　p. C6-C8　1993/08

PREPARATION AND STRUCTURAL CHARACTERIZATION OF CATIONIC DINUCLEAR RUTHENIUM(II) - THIOLATE COMPLEXES, [RU2(SPH)3(ETA-6-PARA-CYMENE)2]Y (Y=CL AND PF6)

K MASHIMA, A MIKAMI, A NAKAMURA

CHEMISTRY LETTERS　No. 9　p. 1795-1798　1992/09　Research paper (scientific journal)

16-ELECTRON HALF-SANDWICH RU(II) THIOLATE COMPLEXES, RU(SAR)2(ETA-6-PARA-CYMENE) (AR = 2,6-DIMETHYLPHENYL AND 2,4,6-TRIISOPROPYLPHENYL)

K MASHIMA, A MIKAMI, A NAKAMURA

CHEMISTRY LETTERS　No. 8　p. 1473-1476　1992/08　Research paper (scientific journal)

SYNTHESIS AND CHARACTERIZATION OF MONONUCLEAR AND TRINUCLEAR RUTHENIUM COMPLEXES OF 2,2'-BIS(DIPHENYLPHOSPHINO)-1,1'-BINAPHTHYL AND THEIR CATALYTIC ACTIVITY

K MASHIMA, T HINO, H TAKAYA

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS　No. 13　p. 2099-2107　1992/07　Research paper (scientific journal)

ASYMMETRIC HYDROFORMYLATION OF VINYL-ACETATE BY USE OF CHIRAL BIS(TRIARYLPHOSPHITE) - RHODIUM(I) COMPLEXES

N SAKAI, K NOZAKI, K MASHIMA, H TAKAYA

TETRAHEDRON-ASYMMETRY　Vol. 3　No. 5　p. 583-586　1992/05　Research paper (scientific journal)

CONVENIENT SYNTHESIS OF PENTAMETHYLCYCLOPENTADIENYL-TANTALUM-DIENE COMPLEXES VIA THE REACTION OF CP-STAR-TACL4 WITH METHYLATED-ALLYL ANIONS

K MASHIMA, Y YAMANAKA, S FUJIKAWA, H YASUDA, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 428　No. 1-2　p. C5-C7　1992/04

CHEMOSELECTIVE ASYMMETRIC HYDROGENATION OF ALPHA,BETA-UNSATURATED CARBONYL-COMPOUNDS TO ALLYLIC ALCOHOLS CATALYZED BY [IR(BINAP)(COD)]BF4-AMINOPHOSPHINE

K MASHIMA, T AKUTAGAWA, XY ZHANG, H TAKAYA, T TAKETOMI, H KUMOBAYASHI, S AKUTAGAWA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 428　No. 1-2　p. 213-222　1992/04　Research paper (scientific journal)

AGOSTIC INTERACTION IN EARLY TRANSITION-METAL ALKYLS AND THEIR ROLE IN CATALYTIC ACTIVITY FOR OLEFIN POLYMERIZATIONS

K MASHIMA, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 428　No. 1-2　p. 49-58　1992/04　Research paper (scientific journal)

Synthesis and characterization of mono- and tri-nuclear ruthenium complexes of 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl and their catalytic activity

Kazushi Mashima, Takahiro Hino, Hidemasa Takaya

Journal of the Chemical Society, Dalton Transactions　No. 13　p. 2099-2107　1992　Research paper (scientific journal)

NEW 2,2'-BIS(DIPHENYLPHOSPHINO)-1,1'-BINAPHTHYL-RU(II) COMPLEXES FOR ASYMMETRIC CATALYTIC-HYDROGENATION

H TAKAYA, T OHTA, K MASHIMA

HOMOGENEOUS TRANSITION METAL CATALYZED REACTIONS　Vol. 230　No. 230　p. 123-142　1992　Research paper (international conference proceedings)

SYNTHESIS OF PARTIALLY HYDROGENATED BINAP VARIANTS

XY ZHANG, K MASHIMA, K KOYANO, N SAYO, H KUMOBAYASHI, S AKUTAGAWA, H TAKAYA

TETRAHEDRON LETTERS　Vol. 32　No. 49　p. 7283-7286　1991/12　Research paper (scientific journal)

PREPARATION, STRUCTURE, AND REACTION OF THE TRICARBONYLIRON COMPLEX OF TRICYCLO[5.3.1.0(4,9)]UNDECA-2,5-DIENE, A STRONGLY HOMO-CONJUGATED NONPARALLEL 1,4-DIENE

N SAKAI, K MASHIMA, H TAKAYA, R YAMAGUCHI, S KOZIMA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 419　No. 1-2　p. 181-191　1991/11　Research paper (scientific journal)

PREPARATION, CHARACTERIZATION AND THERMAL-REACTIONS OF 1-OXA-2-ZIRCONACYCLOPENTANES AND 1-OXA-2-ZIRCONACYCLO-HEXANE - CRYSTAL-STRUCTURES OF [(ZR(C5H5)2(OCH2CH2CHME))2] AND [ZR(C5ME5)2(OCH2(CH2)2CH2)]

K MASHIMA, M YAMAKAWA, H TAKAYA

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS　No. 11　p. 2851-2858　1991/11　Research paper (scientific journal)

SYNTHESIS AND CHARACTERIZATION OF CATIONIC TRINUCLEAR BINAP-RU(II) COMPLEXES - CRYSTAL-STRUCTURE OF [RU3CL5((S)-BINAP)3]BF4

K MASHIMA, T HINO, H TAKAYA

TETRAHEDRON LETTERS　Vol. 32　No. 26　p. 3101-3104　1991/06　Research paper (scientific journal)

Preparation, characterization and thermal reactions of 1-oxa-2-ziconacyclopentanes and 1-oxa-2-zirconacyclohexane: Crystal structures of [{Zr(C5H5)2(OCH2CH 2CHMe)}2] and [Zr(C5Me5)2{OCH2(CH 2)2CH2}]

Kazushi Mashima, Masashi Yamakawa, Hidemasa Takaya

Journal of the Chemical Society, Dalton Transactions　No. 11　p. 2851-2858　1991　Research paper (scientific journal)

NEW CHIRAL RUTHENIUM COMPLEXES FOR ASYMMETRIC CATALYTIC HYDROGENATIONS

H TAKAYA, T OHTA, K MASHIMA, R NOYORI

PURE AND APPLIED CHEMISTRY　Vol. 62　No. 6　p. 1135-1138　1990/06　Research paper (scientific journal)

Asymmetric Hydrogenation and Hydrogen Transfer Reactions Catalyzed by Chiral Transition-Metal Complexes

TAKAYA Hidemasa, OHTA Tetsuo, MASHIMA Kazushi

Journal of Japan Oil Chemists' Society　Vol. 39　No. 10　p. 866-874　1990

SYNTHESIS OF NEW CHIRAL BIS(TRIARYLPHOSPHINE) LIGANDS BASED ON ASYMMETRIC HYDROGENATION OF 4,5-DIARYL-2-OXOCYCLOPENTANECARBOXYLATES

N FUKUDA, K MASHIMA, Y MATSUMURA, H TAKAYA

TETRAHEDRON LETTERS　Vol. 31　No. 49　p. 7185-7188　1990　Research paper (scientific journal)

NEW CHIRAL RH(I) AND RU(II) COMPLEXES - HIGHLY EFFICIENT CATALYSTS FOR HOMOGENEOUS ASYMMETRIC HYDROGENATION

H TAKAYA, T OHTA, K MASHIMA, M KITAMURA, R NOYORI

FUTURE OPPORTUNITIES IN CATALYTIC AND SEPARATION TECHNOLOGY　Vol. 54　p. 322-339　1990　Research paper (international conference proceedings)

REGIOCHEMISTRY AND STEREOCHEMISTRY IN THE SEQUENTIAL INSERTION OF CARBONYL-COMPOUNDS INTO ZIRCONIUM-DIENE COMPLEXES

H YASUDA, T OKAMOTO, K MASHIMA, A NAKAMURA

JOURNAL OF ORGANOMETALLIC CHEMISTRY　Vol. 363　No. 1-2　p. 61-76　1989/03　Research paper (scientific journal)

A NEW CONVENIENT SYNTHESIS OF CYCLOOCTATETRAENYLLANTHANIDE COMPLEXES - X-RAY CRYSTAL-STRUCTURE OF CEI(C8H8)(THF)3

K MASHIMA, H TAKAYA

TETRAHEDRON LETTERS　Vol. 30　No. 28　p. 3697-3700　1989　Research paper (scientific journal)

REACTION OF (ETA-5-C5ME5)2TIOC[=RE(CO)4RE(CO)5]CH2CH2 WITH TERT-BUTYL ISOCYANIDE - MOLECULAR-STRUCTURE OF A NEW ZWITTERIONIC COMPLEX INVOLVING (ETA-2-IMIDOYL)TITANIUM AND ACYLDIRHENIUM CARBONYL MOIETIES

K MASHIMA, K JYODOI, A OHYOSHI, H TAKAYA

ORGANOMETALLICS　Vol. 6　No. 4　p. 885-887　1987/04

SYNTHESIS OF NEW FISCHER-TYPE CARBENE COMPLEXES - CHARACTERIZATION AND REACTIONS OF TITANOXYCARBENE METAL-COMPLEXES DERIVED FROM (ETA-5-C5ME5)2TI(C2H4) AND METAL-CARBONYLS

K MASHIMA, K JYODOI, A OHYOSHI, H TAKAYA

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS　No. 15　p. 1145-1146　1986/08　Research paper (scientific journal)

PRACTICAL SYNTHESIS OF (R)-2,2' OR (S)-2,2'-BIS(DIARYLPHOSPHINO)-1,1'-BINAPHTHYLS (BINAPS)

H TAKAYA, K MASHIMA, K KOYANO, M YAGI, H KUMOBAYASHI, T TAKETOMI, S AKUTAGAWA

JOURNAL OF ORGANIC CHEMISTRY　Vol. 51　No. 5　p. 629-635　1986/03　Research paper (scientific journal)

RACEMIC STRUCTURES OF ORGANIC AMMONIUM-SALTS OF N-ACETYL-DL-NORLEUCINE AND OPTICAL RESOLUTION BY PREFERENTIAL CRYSTALLIZATION OF THE DL-AMMONIUM SALT

T SHIRAIWA, H YOSHIDA, K MASHIMA, H KUROKAWA

NIPPON KAGAKU KAISHI　No. 2　p. 177-185　1986/02　Research paper (scientific journal)

UNIQUE BONDING AND GEOMETRY IN ETA-CYCLOPENTADIENYLTANTALUM-DIENE COMPLEXES - PREPARATION, X-RAY STRUCTURAL-ANALYSES, AND EHMO CALCULATIONS

H YASUDA, K TATSUMI, T OKAMOTO, K MASHIMA, K LEE, A NAKAMURA, Y KAI, N KANEHISA, N KASAI

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 107　No. 8　p. 2410-2422　1985　Research paper (scientific journal)

STABLE TITANACYCLOPENTANES - ISOLATION, CHARACTERIZATION, AND REACTIONS OF 5,5-BIS(PENTAMETHYLCYCLOPENTADIENYL)-5-TITANASPIRO[2.4]HEPTANES DERIVED FROM (ETA-5-C5ME5)2TI(CH2=CH2) AND METHYLENECYCLOPROPANES

K MASHIMA, H TAKAYA

ORGANOMETALLICS　Vol. 4　No. 8　p. 1464-1466　1985

SYNTHESIS AND CHARACTERIZATION OF 2-[DI(CYCLOPENTADIENYL)ZIRCONA]-1-OXACYCLOPENTANES - X-RAY CRYSTAL-STRUCTURE OF [(ETA-C5H5)2ZROCH2CH2CHME]2

H TAKAYA, M YAMAKAWA, K MASHIMA

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS　No. 22　p. 1283-1284　1983　Research paper (scientific journal)

STRUCTURES OF MONO-(2-BUTENYL) AND BIS(2-BUTENYL)ZIRCONIUM COMPLEXES IN SOLUTION AND THREO SELECTIVE INSERTION REACTION OF ALIPHATIC-ALDEHYDES

K MASHIMA, H YASUDA, K ASAMI, A NAKAMURA

CHEMISTRY LETTERS　No. 2　p. 219-222　1983　Research paper (scientific journal)

X-RAY EVIDENCE FOR A MONONUCLEAR S-TRANS-ETA-4-1,3-DIENE COMPLEX - MOLECULAR-STRUCTURE OF ZR(ETA-5-C5H5)2(S-TRANS-PHCH=CH-CH=CHPH)

Y KAI, N KANEHISA, K MIKI, N KASAI, K MASHIMA, K NAGASUNA, H YASUDA, A NAKAMURA

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS　No. 3　p. 191-192　1982　Research paper (scientific journal)

THE X-RAY STRUCTURE OF A MAGNESIUM-1,3-DIENE COMPLEX - THE UNIQUE MODE OF COORDINATION OF DIENE OBSERVED IN PENTA-COORDINATED MG(THF)3(S-CIS-PHCH=CH-CH=CHPH)

Y KAI, N KANEHISA, K MIKI, N KASAI, K MASHIMA, H YASUDA, A NAKAMURA

CHEMISTRY LETTERS　No. 8　p. 1277-1280　1982　Research paper (scientific journal)

MOLECULAR-STRUCTURE OF [(ETA-5-C5H5)2ZR(CH2-C(CH3)-CH-CH2)-C(CH3)=C(CH3)] PREPARED BY REGIOSELECTIVE INSERTION OF 2-BUTYNE TO ZR(ETA-5-C5H5)2(ISOPRENE)

Y KAI, N KANEHISA, K MIKI, N KASAI, K MASHIMA, K NAGASUNA, H YASUDA, A NAKAMURA

CHEMISTRY LETTERS　No. 12　p. 1979-1982　1982　Research paper (scientific journal)

1,3-DIENE COMPLEXES OF ZIRCONIUM AND HAFNIUM PREPARED BY THE REACTION OF ENEDIYLMAGNESIUM WITH MCL2CP2 - A REMARKABLE DIFFERENCE BETWEEN THE ZIRCONIUM AND HAFNIUM ANALOGS AS REVEALED BY H-1-NMR AND ELECTRONIC-SPECTRA

H YASUDA, Y KAJIHARA, K MASHIMA, K NAGASUNA, K LEE, A NAKAMURA

ORGANOMETALLICS　Vol. 1　No. 2　p. 388-396　1982　Research paper (scientific journal)

REGIOSELECTIVE CARBON-CARBON BOND FORMATION BY REACTION OF ZR-ISOPRENE COMPLEX WITH ALKENES, ALKYNES AND ALKADIENES

H YASUDA, Y KAJIHARA, K NAGASUNA, K MASHIMA, A NAKAMURA

CHEMISTRY LETTERS　No. 6　p. 719-722　1981　Research paper (scientific journal)

REGIOSELECTIVE ADDITION OF CARBONYL-COMPOUNDS TO ISOPRENE COORDINATED TO ZR

H YASUDA, Y KAJIHARA, K MASHIMA, K NAGASUNA, A NAKAMURA

CHEMISTRY LETTERS　No. 5　p. 671-674　1981　Research paper (scientific journal)

H-1-NMR EVIDENCE FOR ETA-4-DIENE COORDINATION STRUCTURE OF ZRCP2(C4H6) AND HAFNACYCLO-3-PENTENE STRUCTURE OF HFCP2(C4H6) IN SOLUTION

H YASUDA, Y KAJIHARA, K MASHIMA, K LEE, A NAKAMURA

CHEMISTRY LETTERS　No. 4　p. 519-522　1981　Research paper (scientific journal)