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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 55 12119 10910 907 828 193 10843

Kei Manabe publications per year

The chart shows the history of publications by Kei Manabe between 1992 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kei Manabe published across 34 years, from 1992 to 2025, averaging 5.8 papers a year. Output peaked at 42 publications in 2002. 5 of the 196 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1992 to 2025. Vertical axis: number of publications, 0 to 42. Peak 42 publications in 2002. 1992: 2 publications 1993: 2 publications 1994: 2 publications 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 3 publications 1999: 8 publications 2000: 8 publications 2001: 11 publications 2002: 42 publications 2003: 18 publications 2004: 4 publications 2005: 10 publications 2006: 5 publications 2007: 7 publications 2008: 5 publications 2009: 4 publications 2010: 6 publications 2011: 3 publications 2012: 4 publications 2013: 6 publications 2014: 3 publications 2015: 6 publications 2016: 3 publications 2017: 6 publications 2018: 4 publications 2019: 5 publications 2020: 6 publications 2021: 2 publications 2022: 4 publications 2023: 2 publications 2024: 3 publications 2025: 2 publications
1992 2025

196 publications in total across all disciplines

View publications per year as a table
Kei Manabe: publications per year, 1992 to 2025
Year Publications
1992 2
1993 2
1994 2
1995 0
1996 0
1997 0
1998 3
1999 8
2000 8
2001 11
2002 42
2003 18
2004 4
2005 10
2006 5
2007 7
2008 5
2009 4
2010 6
2011 3
2012 4
2013 6
2014 3
2015 6
2016 3
2017 6
2018 4
2019 5
2020 6
2021 2
2022 4
2023 2
2024 3
2025 2
Total 196
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Kei Manabe 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 Kei Manabe 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, 181–200 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: 193 publications — 30th percentile

30% 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 1,344 193
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
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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Kei Manabe 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 Kei Manabe 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, 54–55 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: 55 D-Index — 33rd percentile

33% 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 55
56–57 1,051
58–59 930
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

Kei Manabe is affiliated with the University of Shizuoka in Japan, focusing on research within the field of Chemistry. Their work spans various subfields, including Organic Chemistry, Inorganic Chemistry, Molecular Biology, Catalysis, and Oncology.

The main topics Manabe has extensively investigated include:

  • Catalytic C-H Functionalization Methods
  • Catalytic Cross-Coupling Reactions
  • Asymmetric Hydrogenation and Catalysis
  • Sulfur-Based Synthesis Techniques
  • Chemical Synthesis and Reactions
  • Synthesis and Catalytic Reactions
  • Synthesis and Characterization of Pyrroles

Manabe has contributed to several research papers published in notable scientific journals. Recent publications include:

  • Direct C3-Selective Arylation of N-Unsubstituted Indoles with Aryl Chlorides, Triflates, and Nonaflates Using a Palladium-Dihydroxyterphenylphosphine Catalyst (2020), The Journal of Organic Chemistry
  • Synthesis of Symmetrical Sulfides Enabled by a Sulfur Dioxide Surrogate Acting as a Divalent Sulfur Source (2022), Organic Letters
  • Discovery of a Potent Anticancer Agent PVHD303 with in Vivo Activity (2020), ACS Medicinal Chemistry Letters
  • Selective Syntheses of Unsymmetrical Diaryl Sulfides Enabled by a Sulfur Dioxide Surrogate as a Divalent Sulfur Source and an Activating Agent (2024), ACS Catalysis
  • Pyrroloindoline/Pyridoindoline Synthesis via C3-Dearomative Arylation/Cyclization of Tryptamine/Homotryptamine Derivatives Using Palladium-Dihydroxyterphenylphosphine Catalyst (2023), Organic Letters

Key publication venues frequently featuring Manabe's work are:

  • Organic Letters
  • Tetrahedron
  • Chemical and Pharmaceutical Bulletin
  • The Journal of Organic Chemistry
  • ACS Catalysis

In collaboration, Manabe has worked closely with several co-authors, including:

  • Miyuki Yamaguchi
  • Hideyuki Konishi
  • Ryoya Hagiwara
  • Kanami Gayama
  • Sakiko Fujiwara

Best Publications

  • Development of novel Lewis acid catalysts for selective organic reactions in aqueous media.

    Shu Kobayashi;Kei Manabe

  • Dehydration reactions in water. Brønsted Acid-surfactant-combined catalyst for ester, ether, thioether, and dithioacetal formation in water.

    Kei Manabe;Shinya Iimura;Xiang-Min Sun;Shū Kobayashi

  • Organic Synthesis Inside Particles in Water: Lewis Acid−Surfactant-Combined Catalysts for Organic Reactions in Water Using Colloidal Dispersions as Reaction Media

    Kei Manabe;Yuichiro Mori;Takeshi Wakabayashi;and Satoshi Nagayama

  • Dehydration reactions in water. Surfactant-type Brønsted acid-catalyzed direct esterification of carboxylic acids with alcohols in an emulsion system.

    Kei Manabe;Xiang-Min Sun;Shū Kobayashi

  • Palladium-catalyzed reductive carbonylation of aryl halides with N-formylsaccharin as a CO source.

    Tsuyoshi Ueda;Hideyuki Konishi;Kei Manabe

  • The Catalytic Asymmetric Mannich-Type Reactions in Aqueous Media

    Shū Kobayashi;Tomoaki Hamada;Kei Manabe

  • Facile synthesis of α-amino phosphonates in water using a Lewis acid–surfactant-combined catalyst

    Kei Manabe;Shū Kobayashi

  • Three-component carbon–carbon bond-forming reactions catalyzed by a Brønsted acid–surfactant-combined catalyst in water

    Kei Manabe;Yuichiro Mori;Shū Kobayashi

  • Catalytic asymmetric hydroxymethylation of silicon enolates using an aqueous solution of formaldehyde with a chiral scandium complex.

    Shunpei Ishikawa;Tomoaki Hamada;Kei Manabe;Shū Kobayashi

  • Catalytic asymmetric ring opening of meso-epoxides with aromatic amines in water.

    Stéphane Azoulay;Kei Manabe;Shü Kobayashi

  • Catalytic Asymmetric Aldol Reactions in Aqueous Media Using Chiral Bis-pyridino-18-crown-6−Rare Earth Metal Triflate Complexes

    Tomoaki Hamada;Kei Manabe;Shunpei Ishikawa;Satoshi Nagayama

  • Catalytic asymmetric carbon-carbon bond-forming reactions in aqueous media.

    Kei Manabe;Shū Kobayashi

  • Green Lewis acid catalysis in organic synthesis

    Shū Kobayashi;Kei Manabe

  • Palladium-Catalyzed Carbonylation of Aryl, Alkenyl, and Allyl Halides with Phenyl Formate

    Tsuyoshi Ueda;Hideyuki Konishi;Kei Manabe

  • Enantio- and diastereoselective, stereospecific mannich-type reactions in water.

    Tomoaki Hamada;Kei Manabe;Shu Kobayashi

  • Palladium-catalyzed fluorocarbonylation using N-formylsaccharin as CO source: general access to carboxylic acid derivatives.

    Tsuyoshi Ueda;Hideyuki Konishi;Kei Manabe

  • Bismuth Triflate−Chiral Bipyridine Complexes as Water-Compatible Chiral Lewis Acids

    Shü Kobayashi;Tsuyoshi Ogino;Haruka Shimizu;Shunpei Ishikawa

  • Palladium-catalyzed, carboxylic acid-assisted allylic substitution of carbon nucleophiles with allyl alcohols as allylating agents in water.

    Kei Manabe;Shū Kobayashi

  • Trichlorophenyl Formate: Highly Reactive and Easily Accessible Crystalline CO Surrogate for Palladium-Catalyzed Carbonylation of Aryl/Alkenyl Halides and Triflates

    Tsuyoshi Ueda;Hideyuki Konishi;Kei Manabe

  • Mannich-type reactions in water using a hydrophobic polymer-supported sulfonic acid catalyst

    Shinya Iimura;Daisuke Nobutou;Kei Manabe;Shū Kobayashi

  • Friedel–Crafts‐Type Conjugate Addition of Indoles Using a Lewis Acid–Surfactant‐Combined Catalyst in Water

    Kei Manabe;Naohiro Aoyama;Shū Kobayashi

Frequent Co-Authors

Shu Kobayashi
Shu Kobayashi University of Tokyo
Kenji Koga
Kenji Koga Nara Institute of Science and Technology
Motoo Shiro
Motoo Shiro Nagoya Institute of Technology
Gilbert Stork
Gilbert Stork Columbia University

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