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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 61 9322 8447 662 612 472 12045

Kohtaro Osakada publications per year

The chart shows the history of publications by Kohtaro Osakada between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kohtaro Osakada published across 53 years, from 1973 to 2025, averaging 9.7 papers a year. Output peaked at 28 publications in 2022. 5 of the 516 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 28. Peak 28 publications in 2022. 1973: 1 publication 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 1 publication 1979: 1 publication 1980: 0 publications 1981: 2 publications 1982: 5 publications 1983: 5 publications 1984: 4 publications 1985: 5 publications 1986: 4 publications 1987: 3 publications 1988: 1 publication 1989: 5 publications 1990: 15 publications 1991: 10 publications 1992: 11 publications 1993: 13 publications 1994: 8 publications 1995: 6 publications 1996: 6 publications 1997: 18 publications 1998: 19 publications 1999: 10 publications 2000: 16 publications 2001: 17 publications 2002: 18 publications 2003: 11 publications 2004: 16 publications 2005: 22 publications 2006: 24 publications 2007: 17 publications 2008: 21 publications 2009: 18 publications 2010: 11 publications 2011: 20 publications 2012: 12 publications 2013: 10 publications 2014: 16 publications 2015: 10 publications 2016: 19 publications 2017: 8 publications 2018: 6 publications 2019: 9 publications 2020: 9 publications 2021: 9 publications 2022: 28 publications 2023: 11 publications 2024: 3 publications 2025: 2 publications
1973 2025

516 publications in total across all disciplines

View publications per year as a table
Kohtaro Osakada: publications per year, 1973 to 2025
Year Publications
1973 1
1974 0
1975 0
1976 0
1977 0
1978 1
1979 1
1980 0
1981 2
1982 5
1983 5
1984 4
1985 5
1986 4
1987 3
1988 1
1989 5
1990 15
1991 10
1992 11
1993 13
1994 8
1995 6
1996 6
1997 18
1998 19
1999 10
2000 16
2001 17
2002 18
2003 11
2004 16
2005 22
2006 24
2007 17
2008 21
2009 18
2010 11
2011 20
2012 12
2013 10
2014 16
2015 10
2016 19
2017 8
2018 6
2019 9
2020 9
2021 9
2022 28
2023 11
2024 3
2025 2
Total 516
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Kohtaro Osakada 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 Kohtaro Osakada 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, 461–480 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: 472 publications — 87th percentile

87% 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
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265 472
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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Kohtaro Osakada 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 Kohtaro Osakada 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

Kohtaro Osakada is affiliated with the Tokyo Institute of Technology in Japan. Their research primarily focuses on materials science and chemistry, with a strong emphasis on materials chemistry and organic chemistry. Their work also encompasses areas such as inorganic chemistry, spectroscopy, and process chemistry and technology.

The scientist's main research topics include:

  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Organometallic Complex Synthesis and Catalysis
  • Organoboron and organosilicon chemistry
  • Catalytic Alkyne Reactions
  • Supramolecular Chemistry and Complexes
  • Synthesis and Properties of Aromatic Compounds

Kohtaro Osakada has contributed to various scientific journals and publication venues. Frequent venues for their work include:

  • The Cambridge Structural Database
  • Dalton Transactions
  • Molecules
  • Angewandte Chemie International Edition
  • Angewandte Chemie

Frequent coauthors collaborating with Osakada include:

  • Yoshitaka Tsuchido
  • Tomohito Ide
  • Take-aki Koizumi
  • Yuji Suzaki
  • Masaki Horie

Among recent publications associated with or related to their field of work are:

  • A Macrocyclic Gold(I)-Biphenylene Complex: Triangular Molecular Structure with Twisted Au2(diphosphine) Corners and Reductive Elimination of [6]Cycloparaphenylene, 2020, Angewandte Chemie International Edition
  • Transmetalation of boronic acids and their derivatives: mechanistic elucidation and relevance to catalysis, 2021, Dalton Transactions
  • A dodecamethoxy[6]cycloparaphenylene consisting entirely of hydroquinone ethers: unveiling in-plane aromaticity through a rotaxane structure, 2023, Nature Communications
  • Dynamic Au-C σ-Bonds Leading to an Efficient Synthesis of [n]Cycloparaphenylenes (n = 9-15) by Self-Assembly, 2022, JACS Au
  • Multinuclear Pd and Pt complexes with bridging Si- and Ge-ligands. Stable and flexible coordination bonds and structures and reactions of the molecules, 2020, Coordination Chemistry Reviews

The diverse range of research reflects ongoing exploration in crystallographic methods and organometallic chemistry, highlighting Osakada's involvement in synthesis, structural studies, and catalysis. This contribution covers both fundamental chemistry and applications relevant to material development.

Best Publications

  • Facile Synthesis of 2,5-Diarylthiazoles via Palladium-Catalyzed Tandem C−H Substitutions. Design of Tunable Light Emission and Liquid Crystalline Characteristics

    Atsunori Mori;Akitoshi Sekiguchi;Kentaro Masui;Tomohiro Shimada

  • Mechanism of CC coupling reactions of aromatic halides, promoted by Ni(COD)2 in the presence of 2,2′-bipyridine and PPh3, to give biaryls

    Takakazu Yamamoto;Shoichiro Wakabayashi;Kohtaro Osakada

  • Alkylnickel and -palladium alkoxides associated with alcohols through hydrogen bonding

    Yong Joo Kim;Kohtaro Osakada;Akio Takenaka;Akio Yamamoto

  • Hydroxorhodium Complex-Catalyzed Carbon−Carbon Bond-Forming Reactions of Silanediols with α,β-Unsaturated Carbonyl Compounds. Mizoroki-Heck-Type Reaction vs Conjugate Addition

    Atsunori Mori;Yasuaki Danda;Toshinari Fujii;Kazunori Hirabayashi

  • Dipalladium Catalyst for Olefin Polymerization: Introduction of Acrylate Units into the Main Chain of Branched Polyethylene

    Shigenaga Takano;Daisuke Takeuchi;Kohtaro Osakada;Norihisa Akamatsu

  • Double-decker-type dinuclear nickel catalyst for olefin polymerization: efficient incorporation of functional co-monomers.

    Daisuke Takeuchi;Yuriko Chiba;Shigenaga Takano;Kohtaro Osakada

  • Transmetallation of alkynyl and aryl complexes of Group 10 transition metals

    Kohtaro Osakada;Takakazu Yamamoto

  • Kinetic study on chemical oxidation of leucoemeraldine base polyaniline to emeraldine base

    Doo Kyung Moon;Masahiro Ezuka;Tsukasa Maruyama;Kohtaro Osakada

  • Pd‐Catalyzed Polymerization of Dienes that Involves Chain‐Walking Isomerization of the Growing Polymer End: Synthesis of Polymers Composed of Polymethylene and Five‐Membered‐Ring Units

    Takeshi Okada;Sehoon Park;Daisuke Takeuchi;Kohtaro Osakada

  • Nickel-Complex-Promoted Carboxylation of Haloarenes Involving Insertion of CO2 into NiII-C Bonds

    Kohtaro Osakada;Rei Sato;Takakazu Yamamoto

  • Preparation and properties of new methyl-(alkoxo)- and methyl-(thiolato)nickel and methyl(alkoxo)- and methyl(thiolato)-palladium complexes. Carbon monoxide and carbon disulfide insertion into the alkoxo-palladium bond

    Yong Joo. Kim;Kohtaro. Osakada;Kouji. Sugita;Takakazu. Yamamoto

  • Preparation, structure, and formation mechanism of ruthenium aryloxide complexes cis-RuH(OAr)(PMe3)4 (Ar = C6H5, C6H4-p-Me) and cis-RuH(OC6H4-p-CN)(PMe3)4(HOC6H4-p-CN)

    Kohtaro. Osakada;Kimitaka. Ohshiro;Akio. Yamamoto

  • Polyrotaxane Containing a Blocking Group in Every Structural Unit of the Polymer Chain. Direct Synthesis of Poly(alkylenebenzimidazole) Rotaxane from Ru Complex-Catalyzed Reaction of 1,12-Dodecanediol and 3,3‘-Diaminobenzidine in the Presence of Cyclodextrin

    Isao Yamaguchi;Kohtaro Osakada;Takakazu Yamamoto

  • Introduction of a Long Alkyl Side Chain to Poly(benzimidazole)s. N-Alkylation of the Imidazole Ring and Synthesis of Novel Side Chain Polyrotaxanes

    Isao Yamaguchi;Kohtaro Osakada;Takakazu Yamamoto

  • Ruthenium complex catalyzed regioselective dehydrogenation of unsymmetrical α,ω-diols

    Youichi Ishii;Kohtaro Osakada;Takao Ikariya;Masahiko Saburi

  • Preparation and Properties of trans-Pd(Ar)(C⋮CPh)(PEt3)2. Intermolecular Alkynyl Ligand Transfer between Copper(I) and Palladium(II) Complexes Relevant to Palladium Complex Catalyzed Cross-Coupling of Terminal Alkyne with Haloarene in the Presence of CuI Cocatalyst

    Kohtaro Osakada;Reiko Sakata;Takakazu Yamamoto

  • Room Temperature-Stable Electride as a Synthetic Organic Reagent: Application to Pinacol Coupling Reaction in Aqueous Media

    Haritha Buchammagari;Yoshitake Toda;Masahiro Hirano;Hideo Hosono

  • Decarbonylation of thiol esters to give sulfides promoted by transition metal complexes

    Kohtaro Osakada;Takakazu Yamamoto;Akio Yamamoto

  • Pd Complex-Promoted Cyclopolymerization of Functionalized α,ω-Dienes and Copolymerization with Ethylene to Afford Polymers with Cyclic Repeating Units

    Sehoon Park;Daisuke Takeuchi;Kohtaro Osakada

  • Preparation of polyaniline by oxidation of aniline using H2O2 in the presence of an iron(II) catalyst

    Doo Kyung Moon;Kohtaro Osakada;Tsukasa Maruyama;Takakazu Yamamoto

Frequent Co-Authors

Takakazu Yamamoto
Takakazu Yamamoto Tokyo Institute of Technology
Akio Yamamoto
Akio Yamamoto Waseda University
Yasushi Nishihara
Yasushi Nishihara Okayama University
Atsunori Mori
Atsunori Mori Kobe University
Fumiyuki Ozawa
Fumiyuki Ozawa Kyoto University
Takaki Kanbara
Takaki Kanbara University of Tsukuba
Tomiki Ikeda
Tomiki Ikeda Chuo University
Ewa Gorecka
Ewa Gorecka University of Warsaw
Takao Ikariya
Takao Ikariya Tokyo Institute of Technology
Akihisa Inoue
Akihisa Inoue Josai International University

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