World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
44
Citations
8376
World Ranking
16734
National Ranking
1314

Takashi Koike 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 Takashi Koike 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: 91 publications — 1st percentile

1% of scientists in this discipline score the same or lower.

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

Takashi Koike 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 Takashi Koike 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: 44 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

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

Overview

Takashi Koike is affiliated with the Nippon Institute of Technology in Japan. The scientist's research contributions and academic activities are closely linked with this institution.

There are no recent papers, frequent co-authors, or publication venues documented for Takashi Koike. Similarly, no book publications, main fields or subfields of study, or main research topics have been recorded.

No awards or distinctions have been noted in the available data, and Takashi Koike is currently living.

Based on the available information, further details about Takashi Koike's specific research interests, collaborations, or publication record cannot be provided at this time.

Best Publications

  • Three‐component Oxytrifluoromethylation of Alkenes: Highly Efficient and Regioselective Difunctionalization of CC Bonds Mediated by Photoredox Catalysts

    Yusuke Yasu;Takashi Koike;Munetaka Akita

  • Fine Design of Photoredox Systems for Catalytic Fluoromethylation of Carbon–Carbon Multiple Bonds

    Takashi Koike;Munetaka Akita

  • Visible-light radical reaction designed by Ru- and Ir-based photoredox catalysis

    Takashi Koike;Munetaka Akita

  • Intermolecular aminotrifluoromethylation of alkenes by visible-light-driven photoredox catalysis.

    Yusuke Yasu;Takashi Koike;Munetaka Akita

  • Combining Photoredox‐Catalyzed Trifluoromethylation and Oxidation with DMSO: Facile Synthesis of α‐Trifluoromethylated Ketones from Aromatic Alkenes

    Ren Tomita;Yusuke Yasu;Takashi Koike;Munetaka Akita

  • New Horizons of Photocatalytic Fluoromethylative Difunctionalization of Alkenes

    Takashi Koike;Munetaka Akita

  • Visible Light‐Induced Selective Generation of Radicals from Organoborates by Photoredox Catalysis

    Yusuke Yasu;Takashi Koike;Munetaka Akita

  • Catalysis by Organic Solids. Stereoselective Diels−Alder Reactions Promoted by Microporous Molecular Crystals Having an Extensive Hydrogen-Bonded Network

    Ken Endo;Takashi Koike;Tomoya Sawaki;Osamu Hayashida

  • Trifluoromethylation by Visible-Light-Driven Photoredox Catalysis

    Takashi Koike;Munetaka Akita

  • Visible-light-induced synthesis of a variety of trifluoromethylated alkenes from potassium vinyltrifluoroborates by photoredox catalysis

    Yusuke Yasu;Takashi Koike;Munetaka Akita

  • Stereoselective Synthesis of Optically Active α-Hydroxy Ketones and anti-1,2-Diols via Asymmetric Transfer Hydrogenation of Unsymmetrically Substituted 1,2-Diketones

    Takashi Koike;Kunihiko Murata;Takao Ikariya

  • Highly Regio- and Diastereoselective Synthesis of CF3-Substituted Lactones via Photoredox-Catalyzed Carbolactonization of Alkenoic Acids

    Yusuke Yasu;Yusuke Arai;Ren Tomita;Takashi Koike

  • Aerobic Oxidative Kinetic Resolution of Racemic Secondary Alcohols with Chiral Bifunctional Amido Complexes

    Sachiko Arita;Takashi Koike;Yoshihito Kayaki;Takao Ikariya

  • Photoinduced Oxyamination of Enamines and Aldehydes with TEMPO Catalyzed by [Ru(bpy)3]2+

    Takashi Koike;Munetaka Akita

  • Mechanistic Aspects of Formation of Chiral Ruthenium Hydride Complexes from 16‐Electron Ruthenium Amide Complexes and Formic Acid: Facile Reversible Decarboxylation and Carboxylation

    Takashi Koike;Takao Ikariya

  • Oxydifluoromethylation of Alkenes by Photoredox Catalysis: Simple Synthesis of CF2H‐Containing Alcohols

    Yusuke Arai;Ren Tomita;Gaku Ando;Takashi Koike

  • Photoredox-Catalyzed Stereoselective Conversion of Alkynes into Tetrasubstituted Trifluoromethylated Alkenes.

    Ren Tomita;Takashi Koike;Munetaka Akita

  • Regiospecific Intermolecular Aminohydroxylation of Olefins by Photoredox Catalysis.

    Kazuki Miyazawa;Takashi Koike;Munetaka Akita

  • Chemistry of polycarbon species: from clusters to molecular devices

    Munetaka Akita;Takashi Koike

  • Photochromic organometallics with a dithienylethene (DTE) Bridge, [Y-C[triple bond]C-DTE-C[triple bond]C-Y] (Y={MCp*(dppe)}): photoswitchable molecular wire (M=Fe) versus dual photo- and electrochromism (M=Ru).

    Yuya Tanaka;Yuya Tanaka;Takuya Ishisaka;Akiko Inagaki;Takashi Koike

Frequent Co-Authors

Munetaka Akita
Munetaka Akita Tokyo Institute of Technology
Takao Ikariya
Takao Ikariya Tokyo Institute of Technology
Eiji Shirakawa
Eiji Shirakawa Kyoto University
Claude Lapinte
Claude Lapinte University of Rennes
Ryan Gilmour
Ryan Gilmour University of Münster
Michito Yoshizawa
Michito Yoshizawa Tokyo Institute of Technology
Burkhard König
Burkhard König University of Regensburg
Paolo Melchiorre
Paolo Melchiorre Royal Society of Chemistry
Oliver Reiser
Oliver Reiser University of Regensburg
Tehshik P. Yoon
Tehshik P. Yoon University of Wisconsin–Madison

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