Unexpected Surprise in the Reactions of Acetals and Trialkylsilyl Chloride (R3SiCl): Efficient Deprotection of Aromatic Acyclic Acetals

Muthu Karuppasamy, Ishani Uditha Wedage, Mohamed S. H. Salem, Koji Morimoto, Shinobu Takizawa, Hiromichi Fujioka

Chemical and Pharmaceutical Bulletin　Vol. 73　No. 4　p. 396-400　2025/04/23　Research paper (scientific journal)

Tandem Photocatalyst‐Free Visible Light Aryl Azidation‐Intramolecular C−H Amination: One‐Pot Access to Carbazoles and Indoles from Areneazo‐2‐(2‐nitro)propanes

Dilip V. Patil, Rahulkumar Patel, Shinobu Takizawa, Hun Y. Kim, Kyungsoo Oh

Advanced Synthesis & Catalysis　Vol. 367　2025/02/18　Research paper (scientific journal)

Remodelling molecular frameworks via atom-level surgery: recent advances in skeletal editing of (hetero)cycles

Rubal Sharma, Mitsuhiro Arisawa, Shinobu Takizawa, Mohamed S. H. Salem

Organic Chemistry Frontiers　Vol. 12　No. 5　p. 1633-1670　2025/01　Research paper (scientific journal)

Visible Light-Induced Radical Cascade Functionalization of Quinoxalin-2(1H)-ones: Three-Component 1,2-Di(hetero)arylation Approach with Styrenes and Thianthrenium Salts

Sudip Sau, Shinobu Takizawa, Hun Young Kim, Kyungsoo Oh

Organic Letters　Vol. 26　No. 41　p. 8821-8826　2024/10/09　Research paper (scientific journal)

Green and Efficient Protocols for the Synthesis of Sulfonyl Fluorides Using Potassium Fluoride as the Sole Fluorine Source

Sho Yamahara, Mohamed S. H. Salem, Takuma Kawai, Mai Watanabe, Yugo Sakamoto, Tomohide Okada, Yoshikazu Kimura, Shinobu Takizawa, Masayuki Kirihara

ACS Sustainable Chemistry & Engineering　Vol. 12　No. 32　p. 12135-12142　2024/07/16　Research paper (scientific journal)

Electrochemical Carbon-Ferrier Rearrangement Using a Microflow Reactor and Machine Learning-Assisted Exploration of Suitable Conditions

Eisuke Sato, Gaku Tachiwaki, Mayu Fujii, Koichi Mitsudo, Takashi Washio, Shinobu Takizawa, Seiji Suga

Organic Process Research & Development　2024/05/17　Research paper (scientific journal)

In-silico-assisted derivatization of triarylboranes for the catalytic reductive functionalization of aniline-derived amino acids and peptides with H2

Yusei Hisata, Takashi Washio, Shinobu Takizawa, Sensuke Ogoshi, Yoichi Hoshimoto

Nature Communications　Vol. 15　No. 1　2024/05/07　Research paper (scientific journal)

Impact of helical elongation of symmetric oxa[n]helicenes on their structural, photophysical, and chiroptical characteristics

Mohamed S. H. Salem, Rubal Sharma, Seika Suzuki, Yoshitane Imai, Mitsuhiro Arisawa, Shinobu Takizawa

Chirality　Vol. 36　No. 5　2024/05/02　Research paper (scientific journal)

Bayesian optimization assisted screening conditions for visible light-induced hydroxy-perfluoroalkylation

Koto Tagami, Masaru Kondo, Shinobu Takizawa, Nobuyuki Mase, Tomoko Yajima

Journal of Fluorine Chemistry　Vol. 276　p. 110294-110294　2024/05　Research paper (scientific journal)

Product Selectivity Control under Acidic and Basic Conditions on Oxidative Transformation of 1,3-Dicarbonyls Using Sodium Hypochlorite Pentahydrate

Masayuki Kirihara, Shinobu Takizawa, Yugo Sakamoto, Takumi Tanaka, Takuma Kawai, Tomohide Okada, Yoshikazu Kimura

Synthesis　Vol. 56　No. 12　p. 1873-1880　2024/02/02　Research paper (scientific journal)

Synthesis and Structural and Optical Behavior of Dehydrohelicene-Containing Polycyclic Compounds

Md. Khalid, Mohamed Salem, Shinobu Takizawa

Molecules　Vol. 29　No. 2　p. 296-296　2024/01/05　Research paper (scientific journal)

Theoretical Study on the Relationship between Circular Dichroism and Circularly Polarized Luminescence in Oxaza[7]dehydrohelicene Derivatives

Masaya FUJIWARA, Mikito FUJINAMI, Mohamed S. H. SALEM, Shinobu TAKIZAWA, Hiromi NAKAI

Journal of Computer Chemistry, Japan　2024　Research paper (scientific journal)

Selective recognition between aromatics and aliphatics by cage-shaped borates supported by a machine learning approach

Yuya Tsutsui, Issei Yanaka, Kazuhiro Takeda, Masaru Kondo, Shinobu Takizawa, Ryosuke Kojima, Akihito Konishi, Makoto Yasuda

Organic & Biomolecular Chemistry　2024　Research paper (scientific journal)

Light-induced autoxidation of aldehydes to peracids and carboxylic acids

Mohamed S. H. Salem, Carla Dubois, Yuya Takamura, Atsuhito Kitajima, Takuma Kawai, Shinobu Takizawa, Masayuki Kirihara

Green Chemistry　Vol. 26　No. 1　p. 375-383　2024　Research paper (scientific journal)

Data-driven Electrochemical One-pot Synthesis of Double Hetero[7]dehydrohelicene

Mohamed S. H. SALEM, Rubal SHARMA, Md. Imrul KHALID, Meghna SASI, Ryo AMASAKI, Yoshitane IMAI, Mitsuhiro ARISAWA, Shinobu TAKIZAWA

Electrochemistry　Vol. 91　No. 11　p. 112015-112015　2023/11/28　Research paper (scientific journal)

Antifouling Brominated Diterpenoids from Japanese Marine Red Alga Laurencia venusta Yamada.

Ryosuke Fukada, Yukimasa Yamagishi, Misaki Nagasaka, Daiki Osada, Kazumi Nimura, Iori Oshima, Kazuki Tsujimoto, Masayuki Kirihara, Shinobu Takizawa, Norio Kikuchi, Takahiro Ishii, Takashi Kamada

Chemistry & biodiversity　2023/07/19　Research paper (scientific journal)

Bayesian Optimization-Assisted Screening to Identify Improved Reaction Conditions for Spiro-Dithiolane Synthesis

Masaru Kondo, Hettiarachchige Dona Piyumi Wathsala, Kazunori Ishikawa, Daisuke Yamashita, Takeshi Miyazaki, Yoji Ohno, Hiroaki Sasai, Takashi Washio, Shinobu Takizawa

Molecules　Vol. 28　No. 13　p. 5180-5180　2023/07/03　Research paper (scientific journal)

Photoswitchable Chiral Organocatalysts: Photocontrol of Enantioselective Reactions

Masaru Kondo, Kento Nakamura, Chandu G. Krishnan, Hiroaki Sasai, Shinobu Takizawa

The Chemical Record　2023/04/03　Research paper (scientific journal)

Two-pot synthesis of unsymmetrical hetero[7]helicenes with intriguing optical properties

Mohamed S.H. Salem, Md Imrul Khalid, Hiroaki Sasai, Shinobu Takizawa

Tetrahedron　Vol. 133　2023/03/03　Research paper (scientific journal)

Electrochemical Synthesis of Hetero[7]helicenes Containing Pyrrole and Furan Rings via an Oxidative Heterocoupling and Dehydrative Cyclization Sequence

Mohamed S.H. Salem, Md Imrul Khalid, Makoto Sako, Keigo Higashida, Charlie Lacroix, Masaru Kondo, Ryo Takishima, Taisei Taniguchi, Masahiro Miura, Giang Vo-Thanh, Hiroaki Sasai, Shinobu Takizawa

Advanced Synthesis and Catalysis　Vol. 365　No. 3　p. 373-380　2023/02/07　Research paper (scientific journal)

Light-controlled pKa Value of Chiral Brønsted Acid Catalysts in Enantioselective Aza-Friedel–Crafts Reaction

Chandu G. Krishnan, Masaru Kondo, Osamu Yasuda, Duona Fan, Kento Nakamura, Yoshitomo Wakabayashi, Hiroaki Sasai, Shinobu Takizawa

Chemical Communications　2023　Research paper (scientific journal)

Metal-Free Aerobic C–N Bond Formation of Styrene and Arylamines via Photoactivated Electron Donor–Acceptor Complexation

Duona Fan, Ahmed Sabri, Hiroaki Sasai, Shinobu Takizawa

Molecules　Vol. 28　No. 1　2023/01　Research paper (scientific journal)

Electrochemical synthesis of heterodehydro[7]helicenes

Md. Imrul Khalid, Mohamed S. H. Salem, Makoto Sako, Masaru Kondo, Hiroaki Sasai, Shinobu Takizawa

Communications Chemistry　Vol. 5　No. 1　2022/12/03　Research paper (scientific journal)

Bayesian optimization-driven parallel-screening of multiple parameters for the flow synthesis of biaryl compounds

Masaru Kondo, H. D.P. Wathsala, Mohamed S.H. Salem, Kazunori Ishikawa, Satoshi Hara, Takayuki Takaai, Takashi Washio, Hiroaki Sasai, Shinobu Takizawa

Communications Chemistry　Vol. 5　No. 1　2022/12　Research paper (scientific journal)

Two-Step Synthesis, Structure, and Optical Features of a Double Hetero[7]helicene

Mohamed S.H. Salem, Ahmed Sabri, Md Imrul Khalid, Hiroaki Sasai, Shinobu Takizawa

Molecules　Vol. 27　No. 24　2022/12　Research paper (scientific journal)

Atroposelective Synthesis of C-C Axially Chiral Compounds via Mono- and Dinuclear Vanadium Catalysis

Ankit Kumar, Hiroaki Sasai, Shinobu Takizawa

Accounts of Chemical Research　Vol. 55　No. 20　p. 2949-2965　2022/10/18　Research paper (scientific journal)

Photoswitchable Chiral Cation-Binding Catalyst: Photocontrol of Catalytic Activity on Enantioselective Aminal Synthesis

Chandu G. Krishnan, Masaru Kondo, Kento Nakamura, Hiroaki Sasai, Shinobu Takizawa

Organic Letters　Vol. 24　No. 14　p. 2670-2674　2022/04/15　Research paper (scientific journal)

Metal-free C(aryl)–P bond cleavage: experimental and computational studies of the Michael addition/aryl migration of triarylphosphines to alkynyl esters

Makoto Sako, Kyohei Kanomata, Mohamed S. H. Salem, Tomohiro Furukawa, Hiroaki Sasai, Shinobu Takizawa

Organic Chemistry Frontiers　Vol. 9　No. 8　p. 2187-2192　2022/03　Research paper (scientific journal)

Bayesian optimization with constraint on passed charge for multiparameter screening of electrochemical reductive carboxylation in a flow microreactor

Yuki Naito, Masaru Kondo, Yuto Nakamura, Naoki Shida, Kazunori Ishikawa, Takashi Washio, Shinobu Takizawa, Mahito Atobe

Chemical Communications　Vol. 58　No. 24　p. 3893-3896　2022/02　Research paper (scientific journal)

DAST-mediated ring-opening of cyclopropyl silyl ethers in nitriles: facile synthesis of allylic amides via a Ritter-type process

Masayuki Kirihara, Riho Nakamura, Kana Nakakura, Kazuki Tujimoto, Mohamed S. H. Salem, Takeyuki Suzuki, Shinobu Takizawa

Organic & Biomolecular Chemistry　Vol. 20　No. 33　p. 6558-6561　2022　Research paper (scientific journal)

Application of an Electrochemical Microflow Reactor for Cyanosilylation: Machine Learning-Assisted Exploration of Suitable Reaction Conditions for Semi-Large-Scale Synthesis

Eisuke Sato, Mayu Fujii, Hiroki Tanaka, Koichi Mitsudo, Masaru Kondo, Shinobu Takizawa, Hiroaki Sasai, Takeshi Washio, Kazunori Ishikawa, Seiji Suga

The Journal of Organic Chemistry　Vol. 86　No. 22　p. 16035-16044　2021/11/19　Research paper (scientific journal)

Chemo- and regioselective cross-dehydrogenative coupling reaction of 3-hydroxycarbazoles with arenols catalyzed by a mesoporous silica-supported oxovanadium

Kengo Kasama, Kyohei Kanomata, Yuya Hinami, Karin Mizuno, Yuta Uetake, Toru Amaya, Makoto Sako, Shinobu Takizawa, Hiroaki Sasai, Shuji Akai

RSC Advances　Vol. 11　No. 56　p. 35342-35350　2021/11　Research paper (scientific journal)

Chiral Vanadium(v)-catalyzed Oxidative Coupling of 4-Hydroxycarbazoles

Ganesh T. Kamble, Mohamed S. H. Salem, Tsukasa Abe, Hanseok Park, Makoto Sako, Shinobu Takizawa, Hiroaki Sasai

Chemistry Letters　2021/07/15　Research paper (scientific journal)

Chemo- and enantioselective hetero-coupling of hydroxycarbazoles catalyzed by a chiral vanadium(v) complex

Makoto Sako, Keigo Higashida, Ganesh Tatya Kamble, Kevin Kaut, Ankit Kumar, Yuka Hirose, Da-Yang Zhou, Takeyuki Suzuki, Magnus Rueping, Tomohiro Maegawa, Shinobu Takizawa, Hiroaki Sasai

Organic Chemistry Frontiers　Vol. 8　No. 17　p. 4878-4885　2021/06　Research paper (scientific journal)

Azopyridine-based chiral oxazolines with rare-earth metals for photoswitchable catalysis

Kento Nakamura, Masaru Kondo, Chandu G. Krishnan, Shinobu Takizawa, Hiroaki Sasai

Chemical Communications　Vol. 57　No. 60　p. 7414-7417　2021/06　Research paper (scientific journal)

Energy-, time-, and labor-saving synthesis of α-ketiminophosphonates: machine-learning-assisted simultaneous multiparameter screening for electrochemical oxidation

Masaru Kondo, Akimasa Sugizaki, Md. Imrul Khalid, H. D. P. Wathsala, Kazunori Ishikawa, Satoshi Hara, Takayuki Takaai, Takashi Washio, Shinobu Takizawa, Hiroaki Sasai

Green Chemistry　Vol. 23　No. 16　p. 5825-5831　2021/06　Research paper (scientific journal)

Practical Stereoselective Synthesis of C3‐Spirooxindole‐ and C2‐Spiropseudoindoxyl‐Pyrrolidines via Organocatalyzed Pictet‐Spengler Reaction/Oxidative Rearrangement Sequence

Masaru Kondo, Naoki Matsuyama, Tin Z. Aye, Irshad Mattan, Tomoyuki Sato, Yoshinori Makita, Masami Ishibashi, Midori A. Arai, Shinobu Takizawa, Hiroaki Sasai

Advanced Synthesis & Catalysis　Vol. 363　No. 10　p. 2648-2663　2021/05/18　Research paper (scientific journal)

Chloroamidation of Alkenes Using Sodium Hypochlorite Pentahydrate and Its Application to Synthesis of Aziridines

Shinobu Takizawa, Masayuki Kirihara, Kouta Adachi, Yugo Sakamoto, Kazuki Tujimoto, Sho Yamahara, Ryoji Matsushima, Yukou Namba, Yoshikazu Kimura, Kosuke Sato, Takashi Kamada

HETEROCYCLES　Vol. 103　No. 2　p. 699-699　2021/03　Research paper (scientific journal)

Photoswitchable Chiral Phase Transfer Catalyst

Masaru Kondo, Kento Nakamura, Chandu G. Krishnan, Shinobu Takizawa, Tsukasa Abe, Hiroaki Sasai

ACS Catalysis　Vol. 11　No. 3　p. 1863-1867　2021/02/05　Research paper (scientific journal)

Chapter 18. Vanadium-catalyzed Enantioselective C–C Bond-forming Reactions

Makoto Sako, Shinobu Takizawa, Hiroaki Sasai

Catalysis Series　p. 446-463　2020/12　Part of collection (book)

Chiral vanadium complex-catalyzed oxidative coupling of arenols

Makoto Sako, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron　Vol. 76　No. 47　p. 131645-131645　2020/11　Research paper (scientific journal)

Erratum: Exploration of flow reaction conditions using machine-learning for enantioselective organocatalyzed Rauhut-Currier and [3+2] annulation sequence (Chem. Commun. (2020) 56 (1259-1262) DOI: 10.1039/C9CC08526B)

Masaru Kondo, H. D.P. Wathsala, Makoto Sako, Yutaro Hanatani, Kazunori Ishikawa, Satoshi Hara, Takayuki Takaai, Takashi Washio, Shinobu Takizawa, Hiroaki Sasai

Chemical Communications　Vol. 56　No. 81　2020/10/18　Research paper (scientific journal)

Vanadium(V) Complex-Catalyzed One-Pot Synthesis of Phenanthridines via a Pictet-Spengler-Dehydrogenative Aromatization Sequence

Makoto Sako, Romain Losa, Tomohiro Takiishi, Giang Vo-Thanh, Shinobu Takizawa, Hiroaki Sasai

Catalysts　Vol. 10　No. 8　p. 860-860　2020/08/02　Research paper (scientific journal)

Catalytic and enantioselective oxa-Piancatelli reaction using a chiral vanadium complex

Lukas Schober, Makoto Sako, Shinobu Takizawa, Harald Gröger, Hiroaki Sasai

Chemical Communications　2020/07　Research paper (scientific journal)

Synthesis of Allylamine Derivatives via Intermolecular Aza-Wacker-Type Reaction Promoted by Palladium-SPRIX Catalyst

Abhijit Sen, Linpeng Zhu, Shinobu Takizawa, Kazuhiro Takenaka, Hiroaki Sasai

ADVANCED SYNTHESIS & CATALYSIS　2020/07　Research paper (scientific journal)

Organocatalytic Synthesis of Highly Functionalized Heterocycles by Enantioselective aza-Morita-Baylis-Hillman-Type Domino Reactions

Shinobu Takizawa

Chemical & Pharmaceutical Bulletin　Vol. 68　No. 4　p. 299-315　2020/04　Research paper (scientific journal)

Preparation of Optically Pure Dinuclear Cobalt(III) Complex with Λ-Configuration as a Dianionic Chiral Catalyst

Shinobu Takizawa, Hiroaki Sasai, Mohamed S. H. Salem, Ankit Kumar, Makoto Sako, Tsukasa Abe

HETEROCYCLES　Vol. 103　No. 1　p. 225-225　2020/03　Research paper (scientific journal)

Enantioselective One-pot Synthesis of 3-Azabicyclo[3.1.0]hexanes via Allylic Substitution and Oxidative Cyclization

Bijan Mohon Chaki, Kazuhiro Takenaka, Linpeng Zhu, Tetsuya Tsujihara, Shinobu Takizawa, Hiroaki Sasai

Advanced Synthesis and Catalysis　Vol. 362　No. 7　p. 1537-1547　2020

Exploration of flow reaction conditions using machine-learning for enantioselective organocatalyzed Rauhut-Currier and [3+2] annulation sequence

Masaru Kondo, H. D.P. Wathsala, Makoto Sako, Yutaro Hanatani, Kazunori Ishikawa, Satoshi Hara, Takayuki Takaai, Takashi Washio, Shinobu Takizawa, Hiroaki Sasai

Chemical Communications　Vol. 56　No. 8　p. 1259-1262　2020　Research paper (scientific journal)

Room-Temperature, Metal-Free, and One-Pot Preparation of 2H-Indazoles through a Mills Reaction and Cyclization Sequence

Masaru Kondo, Shinobu Takizawa, Yuzhao Jiang, Hiroaki Sasai

Vol. 25　No. 42　p. 9866-9869　2019/07/25　Research paper (scientific journal)

キラルバナジウム触媒によるヘリセン様化合物の簡便合成

佐古真, 滝澤忍, 笹井宏明

生産と技術　2019/04

Chiral Dinuclear Vanadium Complex-Mediated Oxidative Coupling of Resorcinols

Makoto Sako, Takanori Aoki, Nadine Zumbrägel, Lukas Schober, Harald Gröger, Shinobu Takizawa, Hiroaki Sasai

Journal of Organic Chemistry　Vol. 84　No. 3　p. 1580-1587　2019/02/01　Research paper (scientific journal)

A Concise, Catalyst-Free Synthesis of Davis’ Oxaziridines using Sodium Hypochlorite

Saori Kitagawa, Hiromitsu Mori, Tatsuya Odagiri, Katsuya Suzuki, You Kikkawa, Rie Osugi, Shinobu Takizawa, Yoshikazu Kimura, Masayuki Kirihara

SynOpen　Vol. 03　No. 01　p. 21-25　2019/01　Research paper (scientific journal)

Enantioselective Rauhut–Currier sequence involving desymmetrization of cyclic dienones

S. Takizawa, H. D, P. Wathsala, F. A. Arteaga, K. Kishi, H. Sasai

2018/11

Asymmetric oxidative coupling of hydroxycarbazoles: Facile synthesis of (+)-bi-2-hydroxy-3-methylcarbazole

Makoto Sako, Akimasa Sugizaki, Shinobu Takizawa

Bioorganic and Medicinal Chemistry Letters　Vol. 28　No. 16　p. 2751-2753　2018/09/01　Research paper (scientific journal)

Chiral vanadium complex-catalyzed enantioselective oxidative coupling reactions

Sako, M., Takizawa, S., Sasai, H.

Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry　Vol. 76　No. 9　p. 874-884　2018/09/01　Research paper (scientific journal)

Vanadium-Catalyzed Dehydrogenation of N-Heterocycles in Water

Nadine Zumbrägel, Makoto Sako, Shinobu Takizawa, Hiroaki Sasai, Harald Gröger

Organic Letters　Vol. 20　No. 16　p. 4723-4727　2018/08/17　Research paper (scientific journal)

Phosphine-Catalyzed Dual Umpolung Domino Michael Reaction: Facile Synthesis of Hydroindole- and Hydrobenzofuran-2-Carboxylates

Kenta Kishi, Shinobu Takizawa, Hiroaki Sasai

ACS Catalysis　Vol. 8　No. 6　p. 5228-5232　2018/06/01　Research paper (scientific journal)

Phosphine-Catalyzed Dual Umpolung Domino Michael Reaction: Facile Synthesis of Hydroindole- and Hydrobenzofuran-2-Carboxylates

Kenta Kishi, Shinobu Takizawa, Hiroaki Sasai

ACS Catal.　2018/05　Research paper (scientific journal)

Enantioselective synthesis of spiro (isoxazole-isoxazoline) hybrid ligands

Bijan Mohon Chaki, Kazuhiko Wakita, Shinobu Takizawa, Kazuhiro Takenaka, Hiroaki Sasai

Heterocycles　Vol. 97　No. 1　p. 493-505　2018　Research paper (scientific journal)

Enantioselective carbon-carbon bond-forming reactions catalyzed by vanadium(V) complexes

S. Takizawa, M. Sako, H. Sasai

2017/10

多機能有機分子不斉触媒を用いるエナンチオ選択的ドミノ反応の開発

滝澤忍, 笹井宏明

化学工業　2017/09

Reversal of Enantioselectivity Approach to BINOLs via Single and Dual 2-Naphthol Activation Modes

Hun Young Kim, Shinobu Takizawa, Hiroaki Sasai, Kyungsoo Oh

Organic Letters　Vol. 19　No. 14　p. 3867-3870　2017/07/21　Research paper (scientific journal)

Short Syntheses of 4-Deoxycarbazomycin B, Sorazolon E, and (+)-Sorazolon E2

Makoto Sako, Kazuya Ichinose, Shinobu Takizawa, Hiroaki Sasai

Chemistry - An Asian Journal　Vol. 12　No. 12　p. 1305-1308　2017/06/19　Research paper (scientific journal)

キラルな二核バナジウム触媒の開発と不斉炭素-炭素結合形成反応への応用

滝澤忍

2017/02　Research paper (other academic)

Chiral organocatalyzed intermolecular Rauhut–Currier reaction of nitroalkenes with ethyl allenoate

Shinobu Takizawa, Makoto Sako, Kenta Kishi, Masashi Shigenobu, Giang Vo-Thanh, Hiroaki Sasai

Chemical and Pharmaceutical Bulletin　Vol. 65　No. 11　p. 997-999　2017　Research paper (scientific journal)

Enantio- and diastereoselective Betti/aza-michael sequence: Single operated preparation of chiral 1,3-disubstituted isoindolines

Shinobu Takizawa, Makoto Sako, Mohamed Ahmed Abozeid, Kenta Kishi, H. D.P. Wathsala, Shuichi Hirata, Kenichi Murai, Hiromichi Fujioka, Hiroaki Sasai

Organic Letters　Vol. 19　No. 19　p. 5426-5429　2017　Research paper (scientific journal)

Enantioselective synthesis of tetrahydrocyclopenta[: B] indole bearing a chiral quaternary carbon center via Pd(II)-SPRIX-catalyzed C-H activation

Mohamed Ahmed Abozeid, Shiho Sairenji, Shinobu Takizawa, Makoto Fujita, Hiroaki Sasai

Chemical Communications　Vol. 53　No. 51　p. 6887-6890　2017　Research paper (scientific journal)

Multifunctional catalysis: Stereoselective construction of α-methylidene-γ-lactams via an amidation/Rauhut-Currier sequence

Kenta Kishi, Fernando Arteaga Arteaga, Shinobu Takizawa, Hiroaki Sasai

Chemical Communications　Vol. 53　No. 55　p. 7724-7727　2017　Research paper (scientific journal)

Determination of the absolute configuration of compounds bearing chiral quaternary carbon centers using the crystalline sponge method

Shiho Sairenji, Takashi Kikuchi, Mohamed Ahmed Abozeid, Shinobu Takizawa, Hiroaki Sasai, Yuichiro Ando, Kohsuke Ohmatsu, Takashi Ooi, Makoto Fujita

Chemical Science　Vol. 8　No. 7　p. 5132-5136　2017　Research paper (scientific journal)

Facile synthesis of spirooxindoles via an enantioselective organocatalyzed sequential reaction of oxindoles with ynone

Shinobu Takizawa, Kenta Kishi, Miki Kusaba, Bai Jianfei, Takeyuki Suzuki, Hiroaki Sasai

Heterocycles　Vol. 95　No. 2　p. 761-767　2017　Research paper (scientific journal)

二重活性化能を有する不斉触媒の開発と応用

滝澤忍

2016/12　Research paper (other academic)

Efficient Enantioselective Synthesis of Oxahelicenes Using Redox/Acid Cooperative Catalysts

Makoto Sako, Yoshiki Takeuchi, Tetsuya Tsujihara, Junpei Kodera, Tomikazu Kawano, Shinobu Takizawa, Hiroaki Sasai

Journal of the American Chemical Society　Vol. 138　No. 36　p. 11481-11484　2016/09/14　Research paper (scientific journal)

Efficient Enantioselective Synthesis of Oxahelicenes Using Redox/Acid Cooperative Catalysts

Makoto Sako, Yoshiki Takeuchi, Tetsuya Tsujihara, Junpei Kodera, Tomikazu Kawano, Shinobu Takizawa, Hiroaki Sasai

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 138　No. 36　p. 11481-11484　2016/09　Research paper (scientific journal)

Enantioselective organocatalytic oxidation of ketimine

Shinobu Takizawa, Kenta Kishi, Mohamed Ahmed Abozeid, Kenichi Murai, Hiromichi Fujioka, Hiroaki Sasai

Organic and Biomolecular Chemistry　Vol. 14　No. 2　p. 761-767　2016　Research paper (scientific journal)

Organocatalyzed [4+2] Annulation of All-Carbon Tetrasubstituted Alkenes with Allenoates: Synthesis of Highly Functionalized 2H- and 4H-Pyran Derivatives.

Thi Thuy Duong Ngo, Kenta Kishi, Makoto Sako, Masashi Shigenobu, Chloée Bournaud, Martial Toffano, Régis Guillot, Jean Pierre Baltaze, Shinobu Takizawa, Hiroaki Sasai, Giang Vo-Thanh

ChemistrySelect　Vol. 1　No. 17　p. 5414-5420　2016　Research paper (scientific journal)

Copper-catalyzed divergent oxidative pathways of 2-naphthol derivatives:: Ortho -naphthoquinones versus 2-BINOLs

H. Y. Kim, S. Takizawa, K. Oh

Organic and Biomolecular Chemistry　Vol. 14　No. 30　p. 7191-7196　2016　Research paper (scientific journal)

Phosphine-Catalyzed β,γ-Umpolung Domino Reaction of Allenic Esters: Facile Synthesis of Tetrahydrobenzofuranones Bearing a Chiral Tetrasubstituted Stereogenic Carbon Center

Shinobu Takizawa, Kenta Kishi, Yasushi Yoshida, Steffen Mader, Fernando Arteaga Arteaga, Shoukou Lee, Manabu Hoshino, Magnus Rueping, Makoto Fujita, Hiroaki Sasai

Angewandte Chemie - International Edition　Vol. 54　No. 51　p. 15511-15515　2015/12/14　Research paper (scientific journal)

Structural Features and Asymmetric Environment of i-Pr-SPRIX Ligand

Kazuhiro Takenaka, Xianjin Lin, Shinobu Takizawa, Hiroaki Sasai

Chirality　Vol. 27　No. 8　p. 532-537　2015/08/01　Research paper (scientific journal)

An enantioselective organocatalyzed aza-Morita-Baylis-Hillman reaction of isatin-derived ketimines with acrolein

Yasushi Yoshida, Makoto Sako, Kenta Kishi, Hiroaki Sasai, Susumi Hatakeyama, Shinobu Takizawa

Organic and Biomolecular Chemistry　Vol. 13　No. 34　p. 9022-9028　2015/07/17　Research paper (scientific journal)

Pd(II)-catalyzed diastereoselective and enantioselective domino cyclization/cycloaddition reactions of alkenyl oximes for polycyclic heterocycles with four chiral stereogenic centers

Mohamed A. Abozeid, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Letters　Vol. 56　No. 29　p. 4316-4319　2015/06/14　Research paper (scientific journal)

Pd-catalyzed enantioselective intramolecular α-arylation of α-substituted cyclic ketones: Facile synthesis of functionalized chiral spirobicycles

Lulu Fan, Shinobu Takizawa, Yoshiki Takeuchi, Kazuhiro Takenaka, Hiroaki Sasai

Organic and Biomolecular Chemistry　Vol. 13　No. 17　p. 4837-4840　2015/05/07　Research paper (scientific journal)

Enantioselective and aerobic oxidative coupling of 2-naphthol derivatives using chiral dinuclear vanadium(V) complex in water

Makoto Sako, Shinobu Takizawa, Yasushi Yoshida, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 26　No. 12-13　p. 613-616　2015　Research paper (scientific journal)

C<inf>3</inf>-Symmetric chiral trisimidazoline-catalyzed Friedel-Crafts (FC)-type reaction

Shinobu Takizawa, Shuichi Hirata, Kenichi Murai, Hiromichi Fujioka, Hiroaki Sasai

Organic and Biomolecular Chemistry　Vol. 12　No. 31　p. 5827-5830　2014/08/21　Research paper (scientific journal)

Facile regio- and stereoselective metal-free synthesis of all-carbon tetrasubstituted alkenes bearing a C(sp³)-F unit via dehydroxyfluorination of morita-baylis-hillman (MBH) adducts

Shinobu Takizawa, Fernando Arteaga Arteaga, Kenta Kishi, Shuichi Hirata, Hiroaki Sasai

Organic Letters　Vol. 16　No. 16　p. 4162-4165　2014/08/15　Research paper (scientific journal)

Enantioselective organocatalyzed domino process based on aza-Morita-Baylis-Hillman-type (aza-MBH) reaction

Shuichi Hirata, Shinobu Takizawa, Naohito Inoue, Fernando A. Arteaga, Yasushi Yoshida, Michitaka Suzuki, Hiroaki Sasai

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 248　2014/08

Enantioselective organocatalyzed formal [4+2] cycloaddition of ketimines with allenoates: Easy access to a tetrahydropyridine framework with a chiral tetrasubstituted stereogenic carbon center

Shinobu Takizawa, Fernando Arteaga Arteaga, Yasushi Yoshida, Michitaka Suzuki, Hiroaki Sasai

Asian Journal of Organic Chemistry　Vol. 3　No. 4　p. 412-415　2014/04　Research paper (scientific journal)

Enantioselective oxidative-coupling of polycyclic phenols

Shinobu Takizawa, Junpei Kodera, Yasushi Yoshida, Makoto Sako, Stefanie Breukers, Dieter Enders, Hiroaki Sasai

Tetrahedron　Vol. 70　No. 9　p. 1786-1793　2014/03/04　Research paper (scientific journal)

Metal-catalyzed enantio- and diastereoselective c-c bond-forming reactions in domino processes

Shinobu Takizawa, Hiroaki Sasai

Domino Reactions: Concepts for Efficient Organic Synthesis　p. 419-462　2013/12/27　Part of collection (book)

Chiral bifunctional organocatalysts bearing a 1,3-propanediamine unit for the aza-MBH reaction

Shuichi Hirata, Kouichi Tanaka, Katsuya Matsui, Fernando Arteaga Arteaga, Yasushi Yoshida, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 24　No. 19　p. 1189-1192　2013/10/15　Research paper (scientific journal)

P-chirogenic organocatalysts: Application to the aza-Morita-Baylis-Hillman (aza-MBH) reaction of ketimines

Shinobu Takizawa, Emmanuelle Rémond, Fernando Arteaga Arteaga, Yasushi Yoshida, Vellaisamy Sridharan, Jérôme Bayardon, Sylvain Jugé, Hiroaki Sasai

Chemical Communications　Vol. 49　No. 75　p. 8392-8394　2013/09/28　Research paper (scientific journal)

Pd(ii)-SDP-catalyzed enantioselective 5-exo-dig cyclization of γ-alkynoic acids: Application to the synthesis of functionalized dihydofuran-2(3H)-ones containing a chiral quaternary carbon center

Vellaisamy Sridharan, Lulu Fan, Shinobu Takizawa, Takeyuki Suzuki, Hiroaki Sasai

Organic and Biomolecular Chemistry　Vol. 11　No. 35　p. 5936-5943　2013/09/21　Research paper (scientific journal)

Organocatalyzed formal [2 + 2] cycloaddition of ketimines with allenoates: Facile access to azetidines with a chiral tetrasubstituted carbon stereogenic center

Shinobu Takizawa, Fernando Arteaga Arteaga, Yasushi Yoshida, Michitaka Suzuki, Hiroaki Sasai

Organic Letters　Vol. 15　No. 16　p. 4142-4145　2013/08/16　Research paper (scientific journal)

DFT study of a 5-endo-trig-type cyclization of 3-alkenoic acids by using Pd-spiro-bis(isoxazoline) as catalyst: Importance of the rigid spiro framework for both selectivity and reactivity

Randa K. Gabr, Takuji Hatakeyama, Kazuhiro Takenaka, Shinobu Takizawa, Yoshihiro Okada, Masaharu Nakamura, Hiroaki Sasai

Chemistry - A European Journal　Vol. 19　No. 29　p. 9518-9525　2013/07/15　Research paper (scientific journal)

O-(hydroxyalkyl)phenyl P-chirogenic phosphines as functional chiral lewis bases

Emmanuelle Rémond, Jéroîme Bayardon, Shinobu Takizawa, Yoann Rousselin, Hiroaki Sasai, Sylvain Jugé

Organic Letters　Vol. 15　No. 8　p. 1870-1873　2013/04　Research paper (scientific journal)

Facile synthesis of α-methylidene-γ-butyrolactones: Intramolecular Rauhut-Currier reaction promoted by chiral acid-base organocatalysts

Shinobu Takizawa, Tue Minh Nhat Nguyen, André Grossmann, Michitaka Suzuki, Dieter Enders, Hiroaki Sasai

Tetrahedron　Vol. 69　No. 3　p. 1202-1209　2013/01/21　Research paper (scientific journal)

Vanadium-catalyzed enantioselective Friedel-Crafts-type reactions

Shinobu Takizawa, Fernando Arteaga Arteaga, Yasushi Yoshida, Junpei Kodera, Yoshihiro Nagata, Hiroaki Sasai

Dalton Transactions　Vol. 42　No. 33　p. 11787-11790　2013　Research paper (scientific journal)

6.9 C-C Bond Formation: (aza) Morita-Baylis-Hillman Reaction

H. Sasai, S. Takizawa

Comprehensive Chirality　Vol. 6　p. 234-263　2012/09　Part of collection (book)

Design and synthesis of spiro bis(1,2,3-triazolium) salts as chiral ionic liquids

Yasushi Yoshida, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 23　No. 11-12　p. 843-851　2012/06/30　Research paper (scientific journal)

Enantioselective synthesis of α-alkylidene-γ-butyrolactones: Intramolecular rauhut-currier reaction promoted by acid/base organocatalysts

Shinobu Takizawa, Tue Minh Nhat Nguyen, André Grossmann, Dieter Enders, Hiroaki Sasai

Angewandte Chemie - International Edition　Vol. 51　No. 22　p. 5423-5426　2012/05/29　Research paper (scientific journal)

Synthesis of spiro bis(1,2,3-triazolium) salts as chiral ionic liquids

Yasushi Yoshida, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Letters　Vol. 52　No. 51　p. 6877-6879　2011/12/21　Research paper (scientific journal)

A bifunctional spiro-type organocatalyst with high enantiocontrol: Application to the aza-Morita-Baylis-Hillman reactions

Shinobu Takizawa, Kimiko Kiriyama, Kenta Ieki, Hiroaki Sasai

Chemical Communications　Vol. 47　No. 32　p. 9227-9229　2011/08/28　Research paper (scientific journal)

Enantioselective cyclization of 4-alkenoic acids via an oxidative allylic C-H esterification

Kazuhiro Takenaka, Mitsutoshi Akita, Yugo Tanigaki, Shinobu Takizawa, Hiroaki Sasai

Organic Letters　Vol. 13　No. 13　p. 3506-3509　2011/07/01　Research paper (scientific journal)

Immobilization of Multicomponent Asymmetric Catalysts (MACs)

Hiroaki Sasai, Shinobu Takizawa

Polymeric Chiral Catalyst Design and Chiral Polymer Synthesis　p. 293-322　2011/06/27　Part of collection (book)

Chlorinative cyclization of 1,6-enynes by enantioselective palladium(II)/palladium(IV) catalysis

Kazuhiro Takenaka, Shintaro Hashimoto, Shinobu Takizawa, Hiroaki Sasai

Advanced Synthesis and Catalysis　Vol. 353　No. 7　p. 1067-1070　2011/05/09　Research paper (scientific journal)

An enantioselective organocatalyzed aza-MBH domino process: Application to the facile synthesis of tetrahydropyridines

Shinobu Takizawa, Naohito Inoue, Hiroaki Sasai

Tetrahedron Letters　Vol. 52　No. 3　p. 377-380　2011/01/19　Research paper (scientific journal)

Pd-catalyzed 5-endo-trig-type cyclization of β,γ-unsaturated carbonyl compounds: An efficient ring closing reaction to give γ-butenolides and 3-pyrrolin-2-ones

Gan B. Bajracharya, Priti S. Koranne, Rashid N. Nadaf, Randa Kassem Mohamed Gabr, Kazuhiro Takenaka, Shinobu Takizawa, Hiroaki Sasai

Chemical Communications　Vol. 46　No. 47　p. 9064-9066　2010/12/21　Research paper (scientific journal)

Enantioselective synthesis of isoindolines: An organocatalyzed domino process based on the aza-Morita-Baylis-Hillman reaction

Shinobu Takizawa, Naohito Inoue, Shuichi Hirata, Hiroaki Sasai

Angewandte Chemie - International Edition　Vol. 49　No. 50　p. 9725-9729　2010/12/10　Research paper (scientific journal)

Development of bifunctional organocatalysts for enantioselective Morita-Baylis-Hillman reaction

S. Murakami, S. Takizawa, H. Sasai

2010/12　Research paper (international conference proceedings)

Bifunctional organocatalyst bearing (S)-1,1'-spirobiindane as chiral backbone

K. Kiriyama, S. Takizawa, H. Sasai

2010/12　Research paper (international conference proceedings)

Enantioselective aza-Morita-Baylis-Hillman (aza-MBH) domino reactions promoted by acid-base organocatalyst

N. Inoue, S. Takizawa, S. Hirata, T. M.-N. Nguyen, H. Sasai

2010/12　Research paper (international conference proceedings)

Enantioselective oxidative coupling of 2-naphthols using dinuclear vanadium complex

S. Takizawa, T. Katayama, D. Rajesh, H. Sasai

2010/12　Research paper (international conference proceedings)

DFT Study on 5-Endo-Trig Type Cyclization of β,γ-Unsaturated Carboxylic Acids Using Pd-SPRIX Catalyst

R. K, M. Gabr, G. B. Bajracharya, X. Lin, K. Takenaka, S. Takizawa, Y. Okada, T. Hatakeyama, M. Nakamura, H. Sasai

2010/12　Research paper (international conference proceedings)

Enantioselective Synthesis of γ-Lactones via Intramolecular Wacker-type Cyclization Catalyzed by Pd-SPRIX

M. Akita, Y. Tanigaki, K. Takenaka, S. Takizawa, H. Sasai

2010/12　Research paper (international conference proceedings)

Enantioselective wacker-type cyclization of 2-alkenyl-1,3-diketones promoted by Pd-SPRIX catalyst

Kazuhiro Takenaka, Suman C. Mohanta, Mahesh L. Patil, C. V.Laxman Rao, Shinobu Takizawa, Takeyuki Suzuki, Hiroaki Sasai

Organic Letters　Vol. 12　No. 15　p. 3480-3483　2010/08/06　Research paper (scientific journal)

Enantioselective domino reactions promoted by acid-base organocatalysts

S. Takizawa, N. Inoue, S. Hirata, H. Sasai

2010/07　Research paper (international conference proceedings)

Enantioselective Wacker-type cyclization of 2-alkenyl-1,3-diketones promoted by Pd-SPRIX catalyst

K. Takenaka, S. C. Mohanta, M. L. Patil, C. V. L. Rao, S. Takizawa, T. Suzuki, H. Sasai

Org. Lett.　2010/06　Research paper (scientific journal)

Enantioselective 6-endo-trig Wacker-type cyclization of 2-geranylphenols: Application to a facile synthesis of (-)-cordiachromene

Kazuhiro Takenaka, Yugo Tanigaki, Mahesh L. Patil, C. V.Laxman Rao, Shinobu Takizawa, Takeyuki Suzuki, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 21　No. 7　p. 767-770　2010/04　Research paper (scientific journal)

Enantioselective 6-endo-trig Wacker-type cyclization of 2-geranylphenols: application to a facile synthesis of (-)-cordiachromene

Kazuhiro Takenaka, Yugo Tanigaki, Mahesh L. Patil, C. V. Laxman Rao, Shinobu Takizawa, Takeyuki Suzuki, Hiroaki Sasai

TETRAHEDRON-ASYMMETRY　Vol. 21　No. 7　p. 767-770　2010/04　Research paper (scientific journal)

Asymmetric synthesis of chiral spiro bis(isoxazoline) and spiro (isoxazole-isoxazoline) ligands

Kazuhiro Takenaka, Toyohiro Nagano, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 21　No. 4　p. 379-381　2010/03/16　Research paper (scientific journal)

Enantioselective organocatalyzed aza-MBH domino process: Application to the facile synthesis of tetrahydropyridines and isoindolines

S. Takizawa, N. Inoue, S. Hirata, H. Sasai

2010/03　Research paper (international conference proceedings)

Enantioselective Synthesis of Isoindolines: An Organocatalyzed Domino Process Based On the aza-Morita-Baylis-Hillman Reaction

Shinobu Takizawa, Naohito Inoue, Shuichi Hirata, Hiroaki Sasai

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 49　No. 50　p. 9725-9729　2010　Research paper (scientific journal)

Acid-base organocatalysts for the aza-Morita-Baylis-Hillman reaction of nitroalkenes

Shinobu Takizawa, Atsushi Horii, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 21　No. 8　p. 891-894　2010　Research paper (scientific journal)

Enantioselective intramolecular oxidative aminocarbonylation of alkenylureas catalyzed by palladium-spiro bis(isoxazoline) complexes

Tetsuya Tsujihara, Toshio Shinohara, Kazuhiro Takenaka, Shinobu Takizawa, Kiyotaka Onitsuka, Minoru Hatanaka, Hiroaki Sasai

Journal of Organic Chemistry　Vol. 74　No. 24　p. 9274-9279　2009/12/18　Research paper (scientific journal)

One-pot preparation of chiral dinuclear vanadium(V) complex

Shinobu Takizawa, Doss Rajesh, Tomomi Katayama, Hiroaki Sasai

Synlett　No. 10　p. 1667-1669　2009/06　Research paper (scientific journal)

デンドリマーとデンドロン Buchwald（/ Hartwig）アミノ化反応 Pd（η3-C3H5）（Cp）から0価パラジウム-ホスフィン錯体の調製 HIVプロテアーゼ阻害剤

滝澤 忍, 荒井 孝義, 笹井 宏明, 渕辺 耕平, 秋山 隆彦, 桑野 良一, 柳田 玲子, 竹本 佳司

有機合成化学協会誌　Vol. 67　No. 3　p. 257-257　2009

Total synthesis of chloropeptin II (complestatin) and chloropeptin I

Joie Garfunkle, F. Scott Kimball, John D. Trzupek, Shinobu Takizawa, Hiroyuki Shimamura, Masaki Tomishima, Dale L. Boger

Journal of the American Chemical Society　Vol. 131　No. 44　p. 16036-16038　2009　Research paper (scientific journal)

Dicationic palladium(II)-spiro bis(isoxazoline) complex for highly enantioselective isotactic copolymerization of CO with styrene derivatives

Gan B. Bajracharya, Priti S. Koranne, Tetsuya Tsujihara, Shinobu Takizawa, Kiyotaka Onitsuka, Hiroaki Sasai

Synlett　No. 2　p. 310-314　2009/01　Research paper (scientific journal)

Chiral dinuclear vanadium(v) catalysts for oxidative coupling of 2-naphthols

Shinobu Takizawa, Tomomi Katayama, Chiaki Kameyama, Kiyotaka Onitsuka, Takeyuki Suzuki, Takeshi Yanagida, Tomoji Kawai, Hiroaki Sasai

Chemical Communications　No. 15　p. 1810-1812　2008　Research paper (scientific journal)

Synthesis of novel spiro imidazolium salts as chiral ionic liquids

Mahesh L. Patil, C. V.Laxman Rao, Shinobu Takizawa, Kazuhiro Takenaka, Kiyotaka Onitsuka, Hiroaki Sasai

Tetrahedron　Vol. 63　No. 51　p. 12702-12711　2007/12/17　Research paper (scientific journal)

Development of new methods toward efficient immobilization of chiral catalysts

Shinobu Takizawa, Mahesh L. Patil, Kazuyoshi Marubayashi, Hiroaki Sasai

Tetrahedron　Vol. 63　No. 28　p. 6512-6528　2007/07/09　Research paper (scientific journal)

Enantioselective glyoxylate-ene reaction using a novel spiro bis(isoxazoline) ligand in copper catalysis

Kazuhiko Wakita, Gan B. Bajracharya, Midori A. Arai, Shinobu Takizawa, Takeyuki Suzuki, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 18　No. 3　p. 372-376　2007/02/28　Research paper (scientific journal)

Optical resolution of tetra isopropyl-substituted spiro bis(isoxazoline)i-Pr-SPRIX

Shinobu Takizawa, Junichi Yogo, Tetsuya Tsujihara, Kiyotaka Onitsuka, Hiroaki Sasai

Journal of Organometallic Chemistry　Vol. 692　No. 1-3　p. 495-498　2007/01/01　Research paper (scientific journal)

ORGN 273-Enantioselective catalyses using SPRIX ligands and novel spiro isoxazoline-isoxazole hybrid ligands

Priti S. Koranne, Tetsuya Tsujihara, Shinobu Takizawa, Junichi Yogo, Kiyotaka Onitsuka, Hiroaki Sasai

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 232　2006/09　Research paper (international conference proceedings)

A Brønsted acid and Lewis base organocatalyst for the aza-Morita-Baylis-Hillman reaction

Katsuya Matsui, Shinobu Takizawa, Hiroaki Sasai

Synlett　No. 5　p. 761-765　2006/03/17　Research paper (scientific journal)

Conformational lock in a Brønsted acid-Lewis base organocatalyst for the aza-Morita-Baylis-Hillman reaction

Katsuya Matsui, Kouichi Tanaka, Atsushi Horii, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 17　No. 4　p. 578-583　2006/02/20　Research paper (scientific journal)

Design and synthesis of novel chiral spiro ionic liquids

Mahesh L. Patil, C. V.Laxman Rao, Kohji Yonezawa, Shinobu Takizawa, Kiyotaka Onitsuka, Hiroaki Sasai

Organic Letters　Vol. 8　No. 2　p. 227-230　2006/01/19　Research paper (scientific journal)

Spiro crown ethers bearing (S)-1,1′-spirobiindanes as chiral backbones

Kohji Yonezawa, Mahesh L. Patil, Hiroaki Sasai, Shinobu Takizawa

Heterocycles　Vol. 66　No. 1　p. 639-644　2005/12/31　Research paper (scientific journal)

Fragmentation of tertiary cyclopropanol compounds catalyzed by vanadyl acetylacetonate

Masayuki Kirihara, Hiroko Kakuda, Motohiro Ichinose, Yuta Ochiai, Shinobu Takizawa, Asuka Mokuya, Kumiko Okubo, Akihiko Hatano, Motoo Shiro

Tetrahedron　Vol. 61　No. 20　p. 4831-4839　2005/05/16　Research paper (scientific journal)

Bifunctional organocatalysts for enantioselective aza-Morita-Baylis-Hillman reaction

Katsuya Matsui, Shinobu Takizawa, Hiroaki Sasai

Journal of the American Chemical Society　Vol. 127　No. 11　p. 3680-3681　2005/03/23　Research paper (scientific journal)

Enantioselective Morita-Baylis-Hillman (MBH) reaction promoted by a heterobimetallic complex with a Lewis base

Katsuya Matsui, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Letters　Vol. 46　No. 11　p. 1943-1946　2005/03/14　Research paper (scientific journal)

Micelle-derived polymer supports for enantioselective catalysts

Shinobu Takizawa, Mahesh L. Patil, Fumiko Yonezawa, Kazuyoshi Marubayashi, Hiroyuki Tanaka, Tomoji Kawai, Hiroaki Sasai

Tetrahedron Letters　Vol. 46　No. 7　p. 1193-1197　2005/02/14　Research paper (scientific journal)

Development of a novel chiral spiro ligand bearing oxazoline

Takahiro Kato, Kazuyoshi Marubayashi, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 15　No. 23　p. 3693-3697　2004/11/29　Research paper (scientific journal)

Immobilization of multifunctional asymmetric catalysts (MACS).

D Jayaprakash, S Takizawa, T Arai, H Sasai

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 227　p. U203-U203　2004/03

Dual activation in a homolytic coupling reaction promoted by an enantioselective dinuclear vanadium(IV) catalyst

Hidenori Somei, Yasuaki Asano, Tomokazu Yoshida, Shinobu Takizawa, Hiroshi Yamataka, Hiroaki Sasai

Tetrahedron Letters　Vol. 45　No. 9　p. 1841-1844　2004/02/23　Research paper (scientific journal)

Enantioselective aldol-type reaction using diketene

Takahiro Kawase, Shinobu Takizawa, Doss Jayaprakash, Hiroaki Sasai

Synthetic Communications　Vol. 34　No. 24　p. 4487-4492　2004　Research paper (scientific journal)

Design and synthesis of novel spiro pyridinium and quinolinium salts

Mahesh L. Patil, Shinobu Takizawa, Hiroaki Sasai

Heterocycles　Vol. 61　p. 581-586　2003/12/31　Research paper (scientific journal)

Metal-Bridged Polymers as Insoluble Multicomponent Asymmetric Catalysts with High Enantiocontrol: An Approach for the Immobilization of Catalysts without Using any Support

Shinobu Takizawa, Hidenori Somei, Doss Jayaprakash, Hiroaki Sasai

Angewandte Chemie - International Edition　Vol. 42　No. 46　p. 5711-5714　2003/12/01　Research paper (scientific journal)

Monolayer-Protected Au Cluster (MPC)-Supported Ti-BINOLate Complex

Kazuyoshi Marubayashi, Shinobu Takizawa, Tetsuo Kawakusu, Takayoshi Arai, Hiroaki Sasai

Organic Letters　Vol. 5　No. 23　p. 4409-4412　2003/11/13　Research paper (scientific journal)

Synthesis of novel chiral spiro bis(pyrazole) ligands

Shinobu Takizawa, Yuji Honda, Midori A. Arai, Takahiro Kato, Hiroaki Sasai

Heterocycles　Vol. 60　No. 11　p. 2551-2556　2003/11/01　Research paper (scientific journal)

Polymer-supported bisBINOL ligands for the immobilization of multicomponent asymmetric catalysts

Tetuya Sekiguti, Yoshimasa Iizuka, Shinobu Takizawa, Doss Jayaprakash, Takayoshi Arai, Hiroaki Sasai

Organic Letters　Vol. 5　No. 15　p. 2647-2650　2003/07/24　Research paper (scientific journal)

Enantioselective synthesis of α-methylene-γ-butyrolactones using chiral Pd(II)-SPRIX catalyst

Chinnasamy Muthiah, Midori A. Arai, Toshio Shinohara, Takayoshi Arai, Shinobu Takizawa, Hiroaki Sasai

Tetrahedron Letters　Vol. 44　No. 28　p. 5201-5204　2003/07/07　Research paper (scientific journal)

"Catalyst analogue": A concept for constructing multicomponent asymmetric catalysts (MAC) by using a polymer support

Takayoshi Arai, Tetuya Sekiguti, Kazuhiro Otsuki, Shinobu Takizawa, Hiroaki Sasai

Angewandte Chemie - International Edition　Vol. 42　No. 19　p. 2144-2147　2003/05/16　Research paper (scientific journal)

A dendrimer-supported heterobimetallic asymmetric catalyst

Takayoshi Arai, Tetuya Sekiguti, Yoshimasa Iizuka, Shinobu Takizawa, Shigeru Sakamoto, Kentaro Yamaguchi, Hiroaki Sasai

Tetrahedron Asymmetry　Vol. 13　No. 19　p. 2083-2087　2002/10/04　Research paper (scientific journal)

Facile and Clean Oxidation of Alcohols in Water Using Hypervalent Iodine (III) Reagents

Hirofumi Tohma, Tomohiro Maegawa, Shinobu Takizawa, Yasuyuki Kita

Advanced Synthesis and Catalysis　Vol. 344　No. 3-4　p. 328-337　2002/05　Research paper (scientific journal)

Indium-mediated reaction of 3-bromo-3,3-difluoropropene and bromodifluoromethylacetylene derivatives with aldehydes

Masayuki Kirihara, Tomofumi Takuwa, Shinobu Takizawa, Takefumi Momose, Hideo Nemoto

Tetrahedron　Vol. 56　No. 42　p. 8275-8280　2000/10/13　Research paper (scientific journal)

Facile and clean oxidation of alcohols in water using hypervalent iodine(III) reagents

Hirofumi Tohma, Shinobu Takizawa, Tomohiro Maegawa, Yasuyuki Kita

Angewandte Chemie - International Edition　Vol. 39　No. 7　p. 1306-1308　2000/04　Research paper (scientific journal)

Aerobic deprotection of monothioacetals catalyzed by trichlorooxyvanadium

Masayuki Kirihara, Yuta Ochiai, Nobuka Arai, Shinobu Takizawa, Takefumi Momose, Hideo Nemoto

Tetrahedron Letters　Vol. 40　No. 51　p. 9055-9057　1999/12/17　Research paper (scientific journal)

Aerobic oxidation of α-hydroxycarbonyls catalysed by trichlorooxyvanadium: Efficient synthesis of α-dicarbonyl compounds

Masayuki Kirihara, Yuta Ochiai, Shinobu Takizawa, Hiroki Takahata, Hideo Nemoto

Chemical Communications　No. 15　p. 1387-1388　1999/08/07　Research paper (scientific journal)

Novel one-pot preparation of 5-methoxylated indoline and indole derivatives using a hypervalent iodine(III) reagent

Hirofumi Tohma, Hiroaki Watanabe, Shinobu Takizawa, Tomohiro Maegawa, Yasuyuki Kita

Heterocycles　Vol. 51　No. 8　p. 1785-1788　1999/08/01　Research paper (scientific journal)

Hypervalent iodine(V)-induced asymmetric oxidation of sulfides to sulfoxides mediated by reversed micelles: Novel nonmetallic catalytic system

H. Tohma, S. Takizawa, H. Watanabe, Y. Fukuoka, T. Maegawa, Y. Kita

Journal of Organic Chemistry　Vol. 64　No. 10　p. 3519-3523　1999　Research paper (scientific journal)

Tertiary cyclopropanol systems as synthetic intermediates: Novel ring-cleavage of tertiary cyclopropanol systems using vanadyl acetylacetonate

Masayuki Kirihara, Motohiro Ichinose, Shinobu Takizawa, Takefumi Momose

Chemical Communications　No. 16　p. 1691-1692　1998/08/21　Research paper (scientific journal)

Hypervalent iodine(III) oxidation catalyzed by quaternary ammonium salt in miceliar systems

Hirofumi Tohma, Shinobu Takizawa, Hiroaki Watanabe, Yasuyuki Kita

Tetrahedron Letters　Vol. 39　No. 25　p. 4547-4550　1998/06/18　Research paper (scientific journal)

A novel and direct α-azidation of cyclic sulfides using a hypervalent iodine(III) reagent

Hirofumi Tohma, Masahiro Egi, Makoto Ohtsubo, Hiroaki Watanabe, Shinobu Takizawa, Yasuyuki Kita

Chemical Communications　No. 2　p. 173-174　1998/01/21　Research paper (scientific journal)

Highly chemoselective, oxyvanadium-catalysed cleavage of α-hydroxy ketones

Masayuki Kirihara, Shinobu Takizawa, Takefumi Momose

Journal of the Chemical Society - Perkin Transactions 1　No. 1　p. 7-8　1998/01/07　Research paper (scientific journal)

α,α-Difluoroallyl carbanion: Indium-mediation in its facile coupling with aldehydes

Masayuki Kirihara, Tomofumi Takuwa, Shinobu Takizawa, Takefumi Momose

Tetrahedron Letters　Vol. 38　No. 16　p. 2853-2854　1997/04/21　Research paper (scientific journal)

Bicyclo[3.3.1]nonanes as synthetic intermediates. XXIII. A breakthrough by lanthanoid mediation in nucleophilic addition of carbanions to the inert 'fork head' carbonyl in bicyclo[3.3.1]nonan-3-ones

Takefumi Momose, Shinobu Takizawa, Masayuki Kirihara

Synthetic Communications　Vol. 27　No. 19　p. 3313-3320　1997　Research paper (scientific journal)