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Koichi Narasaka

Koichi Narasaka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 59 10146 9173 728 670 329 12281

Koichi Narasaka publications per year

The chart shows the history of publications by Koichi Narasaka between 1967 and 2017, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Koichi Narasaka published across 51 years, from 1967 to 2017, averaging 6.8 papers a year. Output peaked at 33 publications in 2004. 1 of the 346 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1967 to 2017. Vertical axis: number of publications, 0 to 33. Peak 33 publications in 2004. 1967: 1 publication 1968: 0 publications 1969: 1 publication 1970: 3 publications 1971: 3 publications 1972: 5 publications 1973: 2 publications 1974: 3 publications 1975: 3 publications 1976: 3 publications 1977: 3 publications 1978: 7 publications 1979: 3 publications 1980: 5 publications 1981: 2 publications 1982: 5 publications 1983: 2 publications 1984: 4 publications 1985: 9 publications 1986: 9 publications 1987: 5 publications 1988: 6 publications 1989: 14 publications 1990: 13 publications 1991: 11 publications 1992: 13 publications 1993: 15 publications 1994: 10 publications 1995: 11 publications 1996: 10 publications 1997: 11 publications 1998: 11 publications 1999: 13 publications 2000: 11 publications 2001: 13 publications 2002: 13 publications 2003: 13 publications 2004: 33 publications 2005: 11 publications 2006: 9 publications 2007: 3 publications 2008: 8 publications 2009: 6 publications 2010: 4 publications 2011: 2 publications 2012: 3 publications 2013: 0 publications 2014: 0 publications 2015: 0 publications 2016: 0 publications 2017: 1 publication
1967 2017

346 publications in total across all disciplines

View publications per year as a table
Koichi Narasaka: publications per year, 1967 to 2017
Year Publications
1967 1
1968 0
1969 1
1970 3
1971 3
1972 5
1973 2
1974 3
1975 3
1976 3
1977 3
1978 7
1979 3
1980 5
1981 2
1982 5
1983 2
1984 4
1985 9
1986 9
1987 5
1988 6
1989 14
1990 13
1991 11
1992 13
1993 15
1994 10
1995 11
1996 10
1997 11
1998 11
1999 13
2000 11
2001 13
2002 13
2003 13
2004 33
2005 11
2006 9
2007 3
2008 8
2009 6
2010 4
2011 2
2012 3
2013 0
2014 0
2015 0
2016 0
2017 1
Total 346
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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.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 321–340 publications, is where this scientist sits. 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
61–80 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.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643 329
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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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.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 58–59 D-Index, is where this scientist sits. 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
40–41 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.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930 59
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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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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