KEIO RESEARCHERS INFORMATION SYSTEM

Academic Degrees 【 Display / hide 】

Academic Degrees 【 Display / hide 】

• 博士（工学）, Nagoya University, Coursework, 2014.03

Books 【 Display / hide 】

Books 【 Display / hide 】

• Trichloroperoxyacetamidic Acid

  Robert D Bach, Ryosuke Tsutsumi, Daisuke Uraguchi, Takashi Ooi, American Cancer Society, 2018.03

Papers 【 Display / hide 】

Papers 【 Display / hide 】

• Chiral Bipyridine Ligand with Flexible Molecular Recognition Site: Development and Application to Copper‐Catalyzed Asymmetric Borylation of α,β‐Unsaturated Ketones

  Ryosuke Tsutsumi, Rika Taguchi, Masahiro Yamanaka

  ChemCatChem （Wiley)   2021.10

  Research paper (scientific journal), Joint Work, Accepted,  ISSN  1867-3880

  • Access to Document (DOI)

• Mechanistic insights into entropy-driven 1,2-type Friedel-Crafts reaction with conformationally flexible guanidine-bisthiourea bifunctional organocatalysts

  Katsuhiro Nakano and Tatsuya Orihara and Masaki Kawaguchi and Keisuke Hosoya and Shogo Hirao and Ryosuke Tsutsumi and Masahiro Yamanaka and Minami Odagi and Kazuo Nagasawa

  Tetrahedron （Elsevier {BV})  92   132281 - 132281 2021.07

  Research paper (scientific journal), Joint Work, Accepted

  • Access to Document (DOI)

• Catalyst-Dependent Rate-Determining Steps in Regiodivergent Vinylogous Aza-Morita-Baylis-Hillman Reactions with N-Ts Imines

  Gondo N., Hyakutake R., Fujimura K., Ueda Y., Nakano K., Tsutsumi R., Yamanaka M., Kawabata T.

  Asian Journal of Organic Chemistry （Asian Journal of Organic Chemistry)   2021

  Research paper (scientific journal), Accepted,  ISSN  21935807

  　View Summary

  Catalyst-controlled vinylogous aza-MBH reactions of vinylcyclopentenone were performed, and it was found that the α-adducts were exclusively obtained by DABCO-catalysis, while the γ-adducts were the major products by DMAP-catalysis. We report here that the rate-determining step of the DABCO-catalyzed α-selective reactions is the Mannich-type C−C bond forming step, while that of the DMAP-catalyzed γ-selective reactions seems to be the β-elimination step.

  • Access to Document (DOI)

• Enantioselective Epoxidation of 2,3-Disubstituted Naphthoquinones by a Side Chain Truncated Guanidine–Urea Bifunctional Organocatalyst

  Tatsuya Orihara and Masaki Kawaguchi and Keisuke Hosoya and Ryosuke Tsutsumi and Masahiro Yamanaka and Minami Odagi and Kazuo Nagasawa

  The Journal of Organic Chemistry （American Chemical Society ({ACS}))  85 （ 23 ） 15232 - 15240 2020.12

  Research paper (scientific journal), Joint Work, Accepted,  ISSN  0022-3263

  • Access to Document (DOI)

• Arylation of aryllithiums with S-arylphenothiazinium ions for biaryl synthesis

  Tatsuya Morofuji and Tatsuki Yoshida and Ryosuke Tsutsumi and Masahiro Yamanaka and Naokazu Kano

  Chemical Communications （Royal Society of Chemistry ({RSC}))  56 （ 90 ） 13995 - 13998 2020

  Research paper (scientific journal), Joint Work, Accepted,  ISSN  1359-7345

  　View Summary

  <p>Aryllithiums were arylated with <italic>S</italic>-arylphenothiazinium ions through selective ligand coupling of intermediary sulfuranes. Various unsymmetrical biaryls were obtained without transition-metal catalysis.</p>

  • Access to Document (DOI)

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Reviews, Commentaries, etc. 【 Display / hide 】

Reviews, Commentaries, etc. 【 Display / hide 】

• Catalytic asymmetric fluorination using CSF sparingly soluble in organic solvent

  Tsutsumi R.

  Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry (Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry)  78 ( 2 ) 158 - 159 2020

  Article, review, commentary, editorial, etc. (scientific journal), Single Work,  ISSN  00379980

  　View Summary

  Metal fluorides such as KF and CsF are inexpensive and easy-to-handle nucleophilic fluorinating reagents while their insolubility in most organic solvents often causes a problem in their synthetic use. In this review, examples of nucleophilic fluorination promoted by a hydrogen-bonding donor are described. Moreover, a recent research on asymmetric nucleophilic fluorination using a chiral hydrogen-bond donor catalyst is introduced.

  • Access to Document (DOI)

• 忘れられた反応剤Davis’オキサジリジン

  堤 亮祐, 浦口大輔, 大井貴史

  月刊化学 2013 ( 10 ) 66 - 67 2013.10

  Article, review, commentary, editorial, etc. (scientific journal), Joint Work

Presentations 【 Display / hide 】

Presentations 【 Display / hide 】

• Developmemt of metal-bis-2-aminothiazoline catalyzed enantioselective 1,3-dipolar cycloaddition of nitrones with β,γ-unsaturated α-ketoesters

  Shinnosuke Uno, Ryosuke Tsutsumi, Masahiro Yamanaka

  The 101st Annual Meeting of Chemical Society of Japan, 

  2021.03

  , 

  Oral presentation (general)

• Development of asymmetric bromocyclization of sulfonamide using a new chiral bisguanidine organocatalyst

  Takeru Motoyama, Ryosuke Tsutsumi, Masahiro Yamanaka

  The 101st Annual Meeting of Chemical Society of Japan, 

  2021.03

  , 

  Oral presentation (general)

• Asymmetric Borylation of α,β-Unsaturated Carbonyl Compounds by Using Chiral Bipyridine Ligand with Substrate Recognition Site

  Ryosuke Tsutsumi, Rika Taguchi, Kota Hoshi, Masahiro Yamanaka

  The 101st Annual Meeting of Chemical Society of Japan, 

  2021.03

  , 

  Oral presentation (general)

• A Computational Approach to Design a Novel Guanidine-Urea Bifunctional Organocatalyst and Analyze Transition States in Asymmetric epoxidation of 2,3-Disubstituted 1,4-Naphthoquinone Derivatives

  Tatsuya Orihara, Keisuke Hosoya, Ryosuke Tsutsumi, Masahiro Yamanaka, Minami Odagi, Kazuo Nagasawa

  The 100th Annual Meeting of Chemical Society of Japan (千葉県) , 

  2020.03

  , 

  Oral presentation (general)

• Computational Study of Reactions of Aryllithiums with S-arylphenothiazinium Ions

  Tatsuya Morofuji, Tatsuki Yoshida, Ryosuke Tsutsumi, Masahiro Yamanaka, Naokazu Kano

  The 100th Annual Meeting of Chemical Society of Japan (千葉県) , 

  2020.03

  , 

  Oral presentation (general)

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Courses Taught 【 Display / hide 】

Courses Taught 【 Display / hide 】

• STUDY OF MAJOR FIELD (MOLECULAR DESIGN)

  2022

• SEMINAR (MOLECULAR DESIGN)

  2022

• RESEARCH FOR BACHELOR'S THESIS 1

  2022

• PHARMACEUTICAL-ENGLISH SEMINAR

  2022

• ORGANIC SYNTHESIS

  2022

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