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Koichi Narasaka

Koichi Narasaka

D-Index & Metrics

Chemistry

D-Index
59
Citations
12281
World Ranking
10146
National Ranking
728

Koichi Narasaka 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 Koichi Narasaka 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: 329 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

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

Koichi Narasaka 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 Koichi Narasaka 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: 59 D-Index — 44th percentile

44% of scientists in this discipline score the same or lower.

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

Overview

Koichi Narasaka is affiliated with the University of Tokyo in Japan. Their academic profile includes various dimensions, although specific details on publications, co-authors, and fields of study are not documented in the available data.

Their research output, including recent papers, has not been listed with titles or venues, which limits detailed insight into the specific scope and impact of their work. Similarly, there is no record of frequent co-authors or common publication venues associated with their name.

No information is available regarding book publications or awards that Koichi Narasaka may have received. Likewise, there is no detailed breakdown of main fields or subfields of study connected to their research activities.

Due to the lack of documented topics of work, it is not possible to identify particular thematic areas or specializations that define their scientific contributions. This absence of detailed records suggests that further information may be necessary for a more comprehensive understanding of their academic profile.

Best Publications

  • New cross-aldol reactions. Reactions of silyl enol ethers with carbonyl compounds activated by titanium tetrachloride

    Teruaki Mukaiyama;Kazuo Banno;Koichi Narasaka

  • NEW ALDOL TYPE REACTION

    T. Mukaiyama;K. Narasaka;K. Banno

  • Stereoselective reduction of β hydroxyketones to 1,3-diols highly selective 1,3-asymmetric induction via boron chelates

    Koichi Narasaka;Fong-Chang Pai

  • Asymmetric Diels-Alder Reaction Catalyzed by a Chiral Titanium Reagent

    Koichi Narasaka;Nobuharu Iwasawa;Masayuki Inoue;Tohru Yamada

  • Amination with oximes

    Koichi Narasaka;Mitsuru Kitamura

  • The Michael Reaction of Silyl Enol Ethers with α,β-Unsaturated Eetones and Acetals in the Presence of Titanium Tetraalkoxide and Titanium Tetrachloride

    Koichi Narasaka;Kenso Soai;Yukiko Aikawa;Teruaki Mukaiyama

  • Synthesis of Polysubstituted N-H Pyrroles from Vinyl Azides and 1,3-Dicarbonyl Compounds

    Shunsuke Chiba;Yi-Feng Wang;Guillaume Lapointe;Koichi Narasaka

  • Chiral Lewis acids in catalytic asymmetric reactions

    Koichi Narasaka

  • Asymmetric [2 + 2] cycloaddition reaction catalyzed by a chiral titanium reagent

    Yujiro Hayashi;Koichi Narasaka

  • Mn(III)-catalyzed synthesis of pyrroles from vinyl azides and 1,3-dicarbonyl compounds.

    Yi-Feng Wang;Kah Kah Toh;Shunsuke Chiba;Koichi Narasaka

  • The rhodium-catalyzed Pauson–Khand reaction

    Toshitake Kobayashi;Yuji Koga;Koichi Narasaka

  • Synthesis of Pyrrole Derivatives by the Heck-Type Cyclization of γ,δ-Unsaturated Ketone O-Pentafluorobenzoyloximes

    Hironori Tsutsui;Koichi Narasaka

  • Synthesis of aza-heterocycles from oximes by amino-Heck reaction.

    Mitsuru Kitamura;Koichi Narasaka

  • Asymmetric Hydrocyanation of Aldehydes Using Chiral Titanium Reagents

    Hiroyuki Minamikawa;Satoshi Hayakawa;Tohru Yamada;Nobuharu Iwasawa

  • THE NEW MICHAEL REACTION

    K. Narasaka;K. Soai;T. Mukaiyama

  • EFFICIENT METHODS FOR OXIDATION OF ALCOHOLS

    K. Narasaka;A. Morikawa;K. Saigo;T. Mukaiyama

  • RHODIUM-CATALYZED INTRAMOLECULAR PAUSON-KHAND REACTION

    Yuji Koga;Toshitake Kobayashi;Koichi Narasaka

  • Synthesis of (-)-sordarin.

    Shunsuke Chiba;Mitsuru Kitamura;Koichi Narasaka

  • Convenient synthesis of 1,4-diketones. Application to the synthesis of dihydrojasmone

    Teruaki Mukaiyama;Koichi Narasaka;Masayasu Furusato

  • Rearrangement of Allylic and Propargylic Alcohols Catalyzed by the Combined Use of tetrabutylammonium perrhenate (VII) and p-toluenesulfonic acid

    Koichi Narasaka;Hiroyuki Kusama;Yujiro Hayashi

Frequent Co-Authors

Nobuharu Iwasawa
Nobuharu Iwasawa Tokyo Institute of Technology
Yujiro Hayashi
Yujiro Hayashi Tohoku University
Tohru Yamada
Tohru Yamada Keio University
Shunsuke Chiba
Shunsuke Chiba Nanyang Technological University
Masayuki Inoue
Masayuki Inoue University of Tokyo
Teruaki Mukaiyama
Teruaki Mukaiyama Kitasato University
Kenichi Matsubara
Kenichi Matsubara Osaka University
Yukihiro Nishiyama
Yukihiro Nishiyama Nagoya University
Sunggak Kim
Sunggak Kim Nanyang Technological University

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