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Takahiko Akiyama

Takahiko Akiyama

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 61 9107 8257 641 592 288 18936

Takahiko Akiyama publications per year

The chart shows the history of publications by Takahiko Akiyama between 1981 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takahiko Akiyama published across 45 years, from 1981 to 2025, averaging 6.9 papers a year. Output peaked at 21 publications in 2009. 9 of the 312 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1981 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2009. 1981: 4 publications 1982: 2 publications 1983: 0 publications 1984: 2 publications 1985: 2 publications 1986: 0 publications 1987: 1 publication 1988: 0 publications 1989: 2 publications 1990: 11 publications 1991: 7 publications 1992: 9 publications 1993: 2 publications 1994: 5 publications 1995: 3 publications 1996: 1 publication 1997: 4 publications 1998: 7 publications 1999: 6 publications 2000: 6 publications 2001: 5 publications 2002: 8 publications 2003: 5 publications 2004: 7 publications 2005: 13 publications 2006: 20 publications 2007: 9 publications 2008: 11 publications 2009: 21 publications 2010: 10 publications 2011: 12 publications 2012: 18 publications 2013: 11 publications 2014: 10 publications 2015: 13 publications 2016: 8 publications 2017: 2 publications 2018: 5 publications 2019: 8 publications 2020: 6 publications 2021: 3 publications 2022: 13 publications 2023: 11 publications 2024: 3 publications 2025: 6 publications
1981 2025

312 publications in total across all disciplines

View publications per year as a table
Takahiko Akiyama: publications per year, 1981 to 2025
Year Publications
1981 4
1982 2
1983 0
1984 2
1985 2
1986 0
1987 1
1988 0
1989 2
1990 11
1991 7
1992 9
1993 2
1994 5
1995 3
1996 1
1997 4
1998 7
1999 6
2000 6
2001 5
2002 8
2003 5
2004 7
2005 13
2006 20
2007 9
2008 11
2009 21
2010 10
2011 12
2012 18
2013 11
2014 10
2015 13
2016 8
2017 2
2018 5
2019 8
2020 6
2021 3
2022 13
2023 11
2024 3
2025 6
Total 312
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Takahiko Akiyama 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 Takahiko Akiyama 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, 281–300 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: 288 publications — 60th percentile

60% 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
281–300 939 288
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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Takahiko Akiyama 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 Takahiko Akiyama 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, 60–61 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: 61 D-Index — 49th percentile

49% 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
60–61 882 61
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

Takahiko Akiyama is affiliated with Gakushuin University in Japan. Their research primarily spans the fields of Chemistry and Materials Science, with a significant focus on Organic Chemistry and Materials Chemistry as subfields. Additional work includes Pharmaceutical Science, Inorganic Chemistry, and Spectroscopy.

Their research topics encompass a variety of areas within chemical sciences, including:

  • Radical Photochemical Reactions
  • Catalytic C-H Functionalization Methods
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Sulfur-Based Synthesis Techniques
  • Asymmetric Synthesis and Catalysis
  • Fluorine in Organic Chemistry

Recent publications by Akiyama include works published from 2021 through 2024, reflecting ongoing active research in organic synthesis and catalysis. Selected recent papers are:

  • Visible-Light-Driven C-S Bond Formation Based on Electron Donor-Acceptor Excitation and Hydrogen Atom Transfer Combined System, 2021, ACS Organic & Inorganic Au
  • Visible-Light-Driven Enantioselective Radical Addition to Imines Enabled by the Excitation of a Chiral Phosphoric Acid-Imine Complex, 2022, ACS Catalysis
  • Dual-Role Halogen-Bonding-Assisted EDA-SET/HAT Photoreaction System with Phenol Catalyst and Aryl Iodide: Visible-Light-Driven Carbon-Carbon Bond Formation, 2022, The Journal of Organic Chemistry
  • Chiral Phosphoric Acid-Palladium(II) Complex Catalyzed Asymmetric Desymmetrization of Biaryl Compounds by C(sp3)-H Activation, 2023, Journal of the American Chemical Society
  • Recent advances in catalytic asymmetric synthesis, 2024, Frontiers in Chemistry

Frequent coauthors collaborating with Akiyama include Tatsuhiro Uchikura, Masahiro Yamanaka, Yudai Makino, Hiroto Osakabe, and Riku Suzuki. The partnership with Tatsuhiro Uchikura appears particularly extensive.

Akiyama's work has been published repeatedly in various scientific venues, with several papers appearing in:

  • The Cambridge Structural Database
  • Organic Letters
  • The Journal of Organic Chemistry
  • Chemical Communications
  • ACS Organic & Inorganic Au

Best Publications

  • Stronger Brønsted acids

    Takahiko Akiyama

  • Enantioselective Mannich‐Type Reaction Catalyzed by a Chiral Brønsted Acid

    Takahiko Akiyama;Junji Itoh;Koji Yokota;Kohei Fuchibe

  • Recent Progress in Chiral Brønsted Acid Catalysis

    Takahiko Akiyama;Junji Itoh;Kohei Fuchibe

  • Stronger Brønsted Acids: Recent Progress.

    Takahiko Akiyama;Keiji Mori;Keiji Mori

  • Chiral Brønsted Acid-Catalyzed Inverse Electron-Demand Aza Diels−Alder Reaction

    Takahiko Akiyama;Hisashi Morita;Kohei Fuchibe

  • Chiral Brønsted Acid Catalyzed Enantioselective Hydrophosphonylation of Imines: Asymmetric Synthesis of α-Amino Phosphonates

    Takahiko Akiyama;Hisashi Morita;and Junji Itoh;Kohei Fuchibe

  • Chiral Phosphoric Acid Catalyzed Enantioselective Friedel–Crafts Alkylation of Indoles with Nitroalkenes: Cooperative Effect of 3 Å Molecular Sieves

    Junji Itoh;Kohei Fuchibe;Kohei Fuchibe;Takahiko Akiyama

  • Chiral Brønsted Acid Catalyzed Enantioselective Mannich-Type Reaction

    Masahiro Yamanaka;Junji Itoh;Kohei Fuchibe;Takahiko Akiyama

  • Selective Activation of Enantiotopic C(sp3)−Hydrogen by Means of Chiral Phosphoric Acid: Asymmetric Synthesis of Tetrahydroquinoline Derivatives

    Keiji Mori;Kensuke Ehara;Kazuki Kurihara;Takahiko Akiyama

  • Enantioselective synthesis of multisubstituted biaryl skeleton by chiral phosphoric acid catalyzed desymmetrization/kinetic resolution sequence.

    Keiji Mori;Yuki Ichikawa;Manato Kobayashi;Yukihiro Shibata

  • Chiral Brønsted Acid Catalyzed Enantioselective Aza-Diels–Alder Reaction of Brassard's Diene with Imines

    Junji Itoh;Kohei Fuchibe;Takahiko Akiyama

  • Low-Valent Niobium-Mediated Double Activation of C−F/C−H Bonds: Fluorene Synthesis from o-Arylated α,α,α-Trifluorotoluene Derivatives

    Kohei Fuchibe;Takahiko Akiyama

  • Enantiodivergent Atroposelective Synthesis of Chiral Biaryls by Asymmetric Transfer Hydrogenation: Chiral Phosphoric Acid Catalyzed Dynamic Kinetic Resolution.

    Keiji Mori;Keiji Mori;Tsubasa Itakura;Takahiko Akiyama

  • Benzothiazoline: Highly Efficient Reducing Agent for the Enantioselective Organocatalytic Transfer Hydrogenation of Ketimines

    Chen Zhu;Takahiko Akiyama

  • Chiral Phosphoric Acid Catalyzed Transfer Hydrogenation: Facile Synthetic Access to Highly Optically Active Trifluoromethylated Amines

    Alexander Henseler;Masanori Kato;Keiji Mori;Takahiko Akiyama

  • Benzothiazoline: Versatile Hydrogen Donor for Organocatalytic Transfer Hydrogenation

    Chen Zhu;Kodai Saito;Masahiro Yamanaka;Takahiko Akiyama

  • Expeditious Construction of a Carbobicyclic Skeleton via sp3-C−H Functionalization: Hydride Shift from an Aliphatic Tertiary Position in an Internal Redox Process

    Keiji Mori;Shosaku Sueoka;Takahiko Akiyama

  • Enantioselective aza-Darzens reaction catalyzed by a chiral phosphoric acid.

    Takahiko Akiyama;Tohru Suzuki;Keiji Mori

  • Enantioselective Mannich-type reaction catalyzed by a chiral bronsted acid derived from TADDOL

    Takahiko Akiyama;Youichi Saitoh;Hisashi Morita;Kohei Fuchibe

  • Enantioselective Aza-Diels-Alder Reaction Catalyzed by a Chiral Brønsted Acid: Effect of the Additive on the Enantioselectivity

    Takahiko Akiyama;Yukio Tamura;Junji Itoh;Hisashi Morita

Frequent Co-Authors

Chen Zhu
Chen Zhu Shanghai Jiao Tong University
Teruaki Mukaiyama
Teruaki Mukaiyama Kitasato University
Renji Okazaki
Renji Okazaki University of Tokyo
Kin-ya Akiba
Kin-ya Akiba Hiroshima University
Santos Fustero
Santos Fustero University of Valencia
Kentaro Yamaguchi
Kentaro Yamaguchi Tokushima Bunri University
Shigeru Sakamoto
Shigeru Sakamoto Chiba University
Shigeki Kato
Shigeki Kato Kyoto University
Fernando P. Cossío
Fernando P. Cossío University of the Basque Country
Yasuhiko Yoshida
Yasuhiko Yoshida Toyo University

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