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Koichiro Oshima

Koichiro Oshima

Kyoto University
Japan

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Chemistry
Japan
2026

D-Index & Metrics

Chemistry

D-Index
92
Citations
28362
World Ranking
1903
National Ranking
99

Koichiro Oshima publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Koichiro Oshima sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 811 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Koichiro Oshima D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Koichiro Oshima sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 92 D-Index — 90th percentile

90% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

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

Koichiro Oshima is a researcher affiliated with Kyoto University in Japan, specializing in the fields of engineering and energy. Their work predominantly focuses on electrical and electronic engineering, renewable energy, sustainability, and electrochemistry.

Their main research topics include fuel cells and related materials, electrocatalysts for energy conversion, advanced battery technologies research, and electrochemical analysis and applications.

Oshima's publication record includes several recent papers such as:

  • Operando X-ray Absorption Spectroscopic Study on the Influence of Specific Adsorption of the Sulfo Group in the Perfluorosulfonic Acid Ionomer on the Oxygen Reduction Reaction Activity of the Pt/C Catalyst, 2021, ACS Applied Energy Materials
  • Effect of Temperature on Oxygen Reduction Reaction Kinetics for Pd Core-Pt Shell Catalyst with Different Core Size, 2020, ACS Applied Energy Materials
  • Operando X-ray Absorption Spectroscopic Study on the Effect of Ionic Liquid Coverage upon the Oxygen Reduction Reaction Activity of Pd-core Pt-shell Catalysts, 2020, Electrochemistry
  • What was the fundamental cause for the long-continued high market price in Japan in 2021? - negative impact on Japan's renewable energy policy, 2022, IET conference proceedings.

Their frequent coauthors include Tomoki Uchiyama, Kentaro Yamamoto, Toshiki Watanabe, Hideto Imai, and Shigeki Sakurai, each having collaborated on at least three publications with Oshima.

Oshima has published regularly in journals such as ACS Applied Energy Materials and Electrochemistry, as well as presented work at IET conference proceedings.

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

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

    Kyoko Nozaki;Koichiro Oshima;Kiichiro Uchimoto

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

    Yousuke Ikeda;Tomoaki Nakamura;Hideki Yorimitsu;Koichiro Oshima

  • Selective halogen-magnesium exchange reaction via organomagnesium ate complex

    Atsushi Inoue;Kazuya Kitagawa;Hiroshi Shinokubo;Koichiro Oshima

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

    Hidenori Kinoshita;Hiroshi Shinokubo;Koichiro Oshima

  • Nickel-catalyzed carboxylation of organozinc reagents with CO2.

    Hidenori Ochiai;Minsul Jang;Koji Hirano;Hideki Yorimitsu

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

    Walter Affo;Hirohisa Ohmiya;Takuma Fujioka;Yousuke Ikeda

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

    Hideki Yorimitsu;Tomoaki Nakamura;Hiroshi Shinokubo;Koichiro Oshima

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

    Katsuyu Wakabayashi;Hideki Yorimitsu;Koichiro Oshima

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

    Takashi Tsuji;Hideki Yorimitsu;Koichiro Oshima

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

    Hideki Yorimitsu;Koichiro Oshima

  • 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

  • Triethylborane-Induced Hydrodehalogenation of Organic Halides by Tin Hydrides

    Katsukiyo Miura;Yoshifumi Ichinose;Kyoko Nozaki;Keigo Fugami

  • 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

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

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

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

    Kazuhiko Takai;Yuji Hotta;Koichiro Oshima;Hitosi Nozaki

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

    Toshifumi Suzuki;Hiroyuki Saimoto;Hiroki Tomioka;Koichiro Oshima

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

    Kazuya Kitagawa;Atsushi Inoue;Hiroshi Shinokubo;Koichiro Oshima

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

    Azusa Kondoh;Kazuaki Takami;Hideki Yorimitsu;Koichiro Oshima

  • 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

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

    Hiroshi Shinokubo;Koichiro Oshima

Frequent Co-Authors

Hideki Yorimitsu
Hideki Yorimitsu Kyoto University
Hiroshi Shinokubo
Hiroshi Shinokubo Nagoya University
Hitosi Nozaki
Hitosi Nozaki Okayama University
Seijiro Matsubara
Seijiro Matsubara Kyoto University
Koji Hirano
Koji Hirano Osaka University
Hirohisa Ohmiya
Hirohisa Ohmiya Kyoto University
Kazuhiko Takai
Kazuhiko Takai Okayama University
Kiitiro Utimoto
Kiitiro Utimoto Kyoto University
Hisashi Yamamoto
Hisashi Yamamoto Chubu University
Tamejiro Hiyama
Tamejiro Hiyama Chuo University

External Links

Personal website of Koichiro Oshima

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Related Online Degrees & Career Pathways

For those interested in expanding their education beyond traditional chemistry studies, several online degree options offer interdisciplinary opportunities. For example, a forensic science bachelor degree online can provide a strong foundation in applying chemical principles to criminal investigations.

Graduate students may consider pursuing specialized areas such as forensic psychology through an online masters forensic psychology program. This pathway can complement a chemistry background by integrating behavioral science with criminal case analysis.

Careers in forensic science are diverse and growing, bridging science, law enforcement, and legal fields. Exploring forensic science careers highlights roles that utilize chemistry knowledge for identifying evidence and solving crimes.

Cost is always a consideration when selecting an online program. Prospective students should review tuition rates carefully by comparing programs, such as those listed under criminal justice degree tuition, to ensure financial feasibility without compromising quality education.

Best Scientists Citing Koichiro Oshima

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Publications: 32

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Masahiro Miura

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Publications: 31

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Kyoto University

Publications: 30

Louis Fieser

Louis Fieser

Harvard University

Publications: 29

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Max Planck Society

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