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Takeshi Ohkuma

Takeshi Ohkuma

D-Index & Metrics

Chemistry

D-Index
57
Citations
18424
World Ranking
10920
National Ranking
799

Overview

Takeshi Ohkuma is a researcher affiliated with Hokkaido University in Japan, specializing in the field of chemistry with a strong focus on organic chemistry. Their scientific work spans multiple subfields including inorganic chemistry, biomedical engineering, materials chemistry, and molecular biology.

Their research topics primarily cover:

  • Asymmetric Hydrogenation and Catalysis
  • Synthetic Organic Chemistry Methods
  • Catalytic C-H Functionalization Methods
  • Synthesis and Catalytic Reactions
  • Chemical Synthesis and Analysis
  • Catalytic Cross-Coupling Reactions
  • Catalysis for Biomass Conversion

Takeshi Ohkuma's recent publications illustrate ongoing work in synthesis and catalytic reactions. Selected papers include:

  • "Nucleophilic Isocyanation" (2020, ACS Omega)
  • "Asymmetric Hydrogenation of α-Amino Esters into Optically Active β-Amino Alcohols through Dynamic Kinetic Resolution Catalyzed by Ruthenabicyclic Complexes" (2023, Organic Letters)
  • "Photosensitized Intramolecular [2+2] Cycloaddition of 1H-Pyrrolo[2,3-b]pyridines Enabled by the Assistance of Lewis Acids" (2020, The Journal of Organic Chemistry)
  • "Ag2O-catalysed nucleophilic isocyanation: selective formation of less-stable benzylic isonitriles" (2020, Organic Chemistry Frontiers)
  • "Aerobic Allylic Amination Catalyzed by a Pd(OAc)2/P(OPh)3 System with Low Catalyst Loading" (2022, The Journal of Organic Chemistry)

Frequent collaborators in their research environment include:

  • Taiga Yurino
  • Noriyoshi Arai
  • Taichiro Touge
  • Kazuhiko Matsumura
  • Tomohiro Ishizaka

Publications have appeared most often in these venues:

  • Organic Letters
  • Journal of Synthetic Organic Chemistry Japan
  • The Journal of Organic Chemistry
  • Synlett
  • Catalysts

This publication record reflects a sustained output in prominent journals related to organic synthesis and catalytic methods. Takeshi Ohkuma's research contributes to advancing understanding and techniques within the chemical sciences, with a multi-disciplinary approach encompassing both synthetic chemistry and catalytic process development.

Best Publications

  • Asymmetric Catalysis by Architectural and Functional Molecular Engineering: Practical Chemo‐ and Stereoselective Hydrogenation of Ketones

    Ryoji Noyori;Takeshi Ohkuma

  • Asymmetric hydrogenation of .beta.-keto carboxylic esters. A practical, purely chemical access to .beta.-hydroxy esters in high enantiomeric purity

    Ryoji Noyori;Takeshi Ohkuma;Masato Kitamura;Hidemasa Takaya

  • PRACTICAL ENANTIOSELECTIVE HYDROGENATION OF AROMATIC KETONES

    Takeshi Ohkuma;Hirohito Ooka;Shohei Hashiguchi;Takao Ikariya

  • trans‐[RuCl2(phosphane)2(1,2‐diamine)] and Chiral trans‐[RuCl2(diphosphane)(1,2‐diamine)]: Shelf‐Stable Precatalysts for the Rapid, Productive, and Stereoselective Hydrogenation of Ketones

    Henri Doucet;Takeshi Ohkuma;Kunihiko Murata;Tohru Yokozawa

  • Mechanism of Asymmetric hydrogenation of ketones catalyzed by BINAP/1,2-diamine-ruthenium(II) complexes

    Christian A Sandoval;Takeshi Ohkuma;Kilian Muñiz;Ryoji Noyori

  • Homogeneous asymmetric hydrogenation of functionalized ketones

    Masato. Kitamura;Takeshi. Ohkuma;Shinichi. Inoue;Noboru. Sayo

  • Stereoselective hydrogenation via dynamic kinetic resolution

    R. Noyori;T. Ikeda;T. Ohkuma;M. Widhalm

  • Asymmetric Hydrogenation of Alkenyl, Cyclopropyl, and Aryl Ketones. RuCl2(xylbinap)(1,2-diamine) as a Precatalyst Exhibiting a Wide Scope

    Takeshi Ohkuma;Masatoshi Koizumi;Henri Doucet;Trang Pham

  • The Hydrogenation/Transfer Hydrogenation Network: Asymmetric Hydrogenation of Ketones with Chiral η6-Arene/N-Tosylethylenediamine−Ruthenium(II) Catalysts

    Takeshi Ohkuma;Noriyuki Utsumi;Kunihiko Tsutsumi;Kunihiko Murata

  • Preferential hydrogenation of aldehydes and ketones.

    Takeshi Ohkuma;Hirohito Ooka;Takao Ikariya;Ryoji Noyori

  • Asymmetrische Katalyse mit hinsichtlich Struktur und Funktion gezielt entworfenen Molekülen: die chemo‐ und stereoselektive Hydrierung von Ketonen

    Ryoji Noyori;Takeshi Ohkuma

  • trans-RuH(η1-BH4)(binap)(1,2-diamine): A Catalyst for Asymmetric Hydrogenation of Simple Ketones under Base-Free Conditions

    Takeshi Ohkuma;Masatoshi Koizumi;Kilian Muñiz;Gerhard Hilt

  • Toward efficient asymmetric hydrogenation: Architectural and functional engineering of chiral molecular catalysts

    Ryoji Noyori;Masato Kitamura;Takeshi Ohkuma

  • Asymmetric Hydrogenation of Amino Ketones Using Chiral RuCl2(diphophine)(1,2-diamine) Complexes

    Takeshi Ohkuma;Dai Ishii;and Hiroshi Takeno;Ryoji Noyori

  • Catalytic Asymmetric Cyanation Reactions

    Nobuhito Kurono;Takeshi Ohkuma

  • Asymmetric Hydrogenation of tert-Alkyl Ketones

    Takeshi Ohkuma;Christian A Sandoval;Rajagopal Srinivasan;Quinghong Lin

  • Conformationally Flexible Biphenyl‐phosphane Ligands for Ru‐Catalyzed Enantioselective Hydrogenation

    Koichi Mikami;Toshinobu Korenaga;Masahiro Terada;Takeshi Ohkuma

  • Asymmetric Hydrogenation

    Unknown

  • Asymmetric Activation of Racemic Ruthenium(II) Complexes for Enantioselective Hydrogenation

    Takeshi Ohkuma;Henri Doucet;Trang Pham;Koichi Mikami

  • Selective Hydrogenation of Benzophenones to Benzhydrols. Asymmetric Synthesis of Unsymmetrical Diarylmethanols

    Takeshi Ohkuma;Masatoshi Koizumi;Hideyuki Ikehira;Tohru Yokozawa

  • Asymmetric hydrogenation of alpha-chloro aromatic ketones catalyzed by eta6-arene/TsDPEN-ruthenium(II) complexes.

    Takeshi Ohkuma;Kunihiko Tsutsumi;Noriyuki Utsumi;Noriyoshi Arai

Frequent Co-Authors

Ryoji Noyori
Ryoji Noyori Nagoya University
Masato Kitamura
Masato Kitamura Nagoya University
Kilian Muñiz
Kilian Muñiz Institució Catalana de Recerca i Estudis Avançats
Henri Doucet
Henri Doucet University of Rennes
Koichi Mikami
Koichi Mikami Tokyo Institute of Technology
Hidemasa Takaya
Hidemasa Takaya Kyoto University
Makoto Tokunaga
Makoto Tokunaga Kyushu University
Keisuke Suzuki
Keisuke Suzuki University of Sussex
Masahiro Terada
Masahiro Terada Tohoku University
Hisanori Shinohara
Hisanori Shinohara Nagoya University

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