Koichiro Oshima

Research.com Recognitions

• 2026 - Research.com Chemistry in Japan Leader Award
• 2025 - Research.com Chemistry in Japan Leader Award
• 2022 - Research.com Chemistry in Japan Leader Award

Overview

Best Publications

• Reactions of alkenylchromium reagents prepared from alkenyl trifluoromethanesulfonates (triflates) with chromium(II) chloride under nickel catalysis.

  Kazuhiko Takai;Mizuka Tagashira;Tooru Kuroda;Koichiro Oshima

  576
  Citations

• Et3B-induced radical addition of R3SnH to acetylenes and its application to cyclization reaction

  Kyoko Nozaki;Koichiro Oshima;Kiichiro Uchimoto

  417
  Citations

• Cobalt-catalyzed Heck-type reaction of alkyl halides with styrenes.

  Yousuke Ikeda;Tomoaki Nakamura;Hideki Yorimitsu;Koichiro Oshima

  325
  Citations

• Selective halogen-magnesium exchange reaction via organomagnesium ate complex

  Atsushi Inoue;Kazuya Kitagawa;Hiroshi Shinokubo;Koichiro Oshima

  309
  Citations

• Water Enables Direct Use of Allyl Alcohol for Tsuji−Trost Reaction without Activators

  Hidenori Kinoshita;Hiroshi Shinokubo;Koichiro Oshima

  287
  Citations

• Nickel-catalyzed carboxylation of organozinc reagents with CO2.

  Hidenori Ochiai;Minsul Jang;Koji Hirano;Hideki Yorimitsu

  280
  Citations

• Cobalt-Catalyzed Trimethylsilylmethylmagnesium-Promoted Radical Alkenylation of Alkyl Halides: A Complement to the Heck Reaction

  Walter Affo;Hirohisa Ohmiya;Takuma Fujioka;Yousuke Ikeda

  279
  Citations

• Powerful solvent effect of water in radical reaction: Triethylborane-induced atom-transfer radical cyclization in water

  Hideki Yorimitsu;Tomoaki Nakamura;Hiroshi Shinokubo;Koichiro Oshima

  271
  Citations

• Cobalt-catalyzed tandem radical cyclization and cross-coupling reaction: Its application to benzyl-substituted heterocycles

  Katsuyu Wakabayashi;Hideki Yorimitsu;Koichiro Oshima

  264
  Citations

• Cobalt‐Catalyzed Coupling Reaction of Alkyl Halides with Allylic Grignard Reagents

  Takashi Tsuji;Hideki Yorimitsu;Koichiro Oshima

  256
  Citations

• Recent Progress in Asymmetric Allylic Substitutions Catalyzed by Chiral Copper Complexes

  Hideki Yorimitsu;Koichiro Oshima

  249
  Citations

• Synthesis of dioxobis(tert-alkylimido)osmium(VIII) and oxotris(tert-alkylimido)osmium(VIII) complexes. Stereospecific vicinal diamination of olefins

  Anthony O. Chong;Koichiro Oshima;K. Barry Sharpless

  248
  Citations

• Triethylborane-Induced Hydrodehalogenation of Organic Halides by Tin Hydrides

  Katsukiyo Miura;Yoshifumi Ichinose;Kyoko Nozaki;Keigo Fugami

  240
  Citations

• Cobalt(diamine)-catalyzed cross-coupling reaction of alkyl halides with arylmagnesium reagents: stereoselective constructions of arylated asymmetric carbons and application to total synthesis of AH13205.

  Hirohisa Ohmiya;Hideki Yorimitsu;Koichiro Oshima

  237
  Citations

• Osmium-catalyzed vicinal oxyamination of olefins by Chloramine-T

  K. B. Sharpless;A. O. Chong;Koichiro. Oshima

  236
  Citations

• Effective methods of carbonyl methylenation using CH2I2-Zn-Me3Al and CH2Br2-Zn-TiCl4 system

  Kazuhiko Takai;Yuji Hotta;Koichiro Oshima;Hitosi Nozaki

  214
  Citations

• Regio- and stereoselective ring opening of epoxy alcohols with organoaluminium compounds leading to 1,2-diols

  Toshifumi Suzuki;Hiroyuki Saimoto;Hiroki Tomioka;Koichiro Oshima

  211
  Citations

• Halogen–Magnesium Exchange via Trialkylmagnesates for the Preparation of Aryl‐ and Alkenylmagnesium Reagents

  Kazuya Kitagawa;Atsushi Inoue;Hiroshi Shinokubo;Koichiro Oshima

  211
  Citations

• Stereoselective hydrothiolation of alkynes catalyzed by cesium base: Facile access to (Z)-1-alkenyl sulfides

  Azusa Kondoh;Kazuaki Takami;Hideki Yorimitsu;Koichiro Oshima

  208
  Citations

• Cobalt-catalyzed cross-coupling reactions of alkyl halides with allylic and benzylic Grignard reagents and their application to tandem radical cyclization/cross-coupling reactions.

  Hirohisa Ohmiya;Takashi Tsuji;Hideki Yorimitsu;Koichiro Oshima

  200
  Citations

• Transition Metal-Catalyzed Carbon−Carbon Bond Formation with Grignard Reagents − Novel Reactions with a Classic Reagent

  Hiroshi Shinokubo;Koichiro Oshima

  183
  Citations