World's Best Scientists 2026 revealed!
Yoshitaka Hamashima

Yoshitaka Hamashima

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 49 14730 13264 1153 1046 162 9645

Yoshitaka Hamashima publications per year

The chart shows the history of publications by Yoshitaka Hamashima between 1999 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Yoshitaka Hamashima published across 27 years, from 1999 to 2025, averaging 6.3 papers a year. Output peaked at 12 publications in 2007. 6 of the 171 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1999 to 2025. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2007. 1999: 2 publications 2000: 9 publications 2001: 6 publications 2002: 2 publications 2003: 1 publication 2004: 3 publications 2005: 7 publications 2006: 6 publications 2007: 12 publications 2008: 8 publications 2009: 3 publications 2010: 9 publications 2011: 7 publications 2012: 9 publications 2013: 5 publications 2014: 8 publications 2015: 9 publications 2016: 6 publications 2017: 5 publications 2018: 12 publications 2019: 9 publications 2020: 5 publications 2021: 7 publications 2022: 3 publications 2023: 12 publications 2024: 4 publications 2025: 2 publications
1999 2025

171 publications in total across all disciplines

View publications per year as a table
Yoshitaka Hamashima: publications per year, 1999 to 2025
Year Publications
1999 2
2000 9
2001 6
2002 2
2003 1
2004 3
2005 7
2006 6
2007 12
2008 8
2009 3
2010 9
2011 7
2012 9
2013 5
2014 8
2015 9
2016 6
2017 5
2018 12
2019 9
2020 5
2021 7
2022 3
2023 12
2024 4
2025 2
Total 171
Download as CSV

Yoshitaka Hamashima 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 Yoshitaka Hamashima 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, 161–180 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: 162 publications — 18th percentile

18% 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 1,350 162
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
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
Download as CSV

Yoshitaka Hamashima 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 Yoshitaka Hamashima 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, 48–49 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: 49 D-Index — 19th percentile

19% 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 49
50–51 861
52–53 872
54–55 933
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
Download as CSV

Overview

Yoshitaka Hamashima is affiliated with the University of Shizuoka in Japan. Their research primarily focuses on fields related to chemistry and materials science, with a strong emphasis on organic chemistry, materials chemistry, pharmaceutical science, inorganic chemistry, and molecular biology.

Their work covers a range of main topics within these fields, including:

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

Yoshitaka Hamashima has contributed articles to multiple publication venues, with a notable number of papers appearing in:

  • The Cambridge Structural Database
  • Organic Letters
  • Journal of the American Chemical Society
  • The Journal of Organic Chemistry
  • Biochemical and Biophysical Research Communications

Their frequent co-authors include:

  • Kenji Yamashita
  • Hiromichi Egami
  • Tomoki Niwa
  • Taiki Rouno
  • Kousuke Nishibashi

Among recent publications, the following papers illustrate areas of their ongoing research:

  • Asymmetric Dearomative Fluorination of 2-Naphthols with a Dicarboxylate Phase-Transfer Catalyst, 2020, Angewandte Chemie International Edition
  • Dual-Role Catalysis by Thiobenzoic Acid in Cα-H Arylation under Photoirradiation, 2020, ACS Catalysis
  • Asymmetric Dearomatizing Fluoroamidation of Indole Derivatives with Dianionic Phase-Transfer Catalyst, 2020, Organic Letters
  • 18F-Labeled dihydromethidine: positron emission tomography radiotracer for imaging of reactive oxygen species in intact brain, 2020, Organic & Biomolecular Chemistry
  • Structure Dependence in Asymmetric Deprotonative Fluorination and Fluorocyclization Reactions of Allylamine Derivatives with Linked Binaphthyl Dicarboxylate Phase-Transfer Catalyst, 2021, Journal of the American Chemical Society

Best Publications

  • Catalytic enantioselective fluorination of oxindoles.

    Yoshitaka Hamashima;Toshiaki Suzuki;Hisashi Takano;and Yuta Shimura

  • An efficient enantioselective fluorination of various β-ketoesters catalyzed by chiral palladium complexes

    Yoshitaka Hamashima;Kenji Yagi;Hisashi Takano;László Tamás

  • A New Bifunctional Asymmetric Catalysis: An Efficient Catalytic Asymmetric Cyanosilylation of Aldehydes

    Yoshitaka Hamashima;Daisuke Sawada;and Motomu Kanai;Masakatsu Shibasaki

  • Recent Advances in Catalytic Enantioselective Fluorination Reactions

    Sylvain Lectard;Yoshitaka Hamashima;Mikiko Sodeoka

  • Direct Generation of Nucleophilic Chiral Palladium Enolate from 1,3-Dicarbonyl Compounds: Catalytic Enantioselective Michael Reaction with Enones

    Yoshitaka Hamashima;Daido Hotta;Mikiko Sodeoka

  • Catalytic Enantioselective Cyanosilylation of Ketones

    Yoshitaka Hamashima;and Motomu Kanai;Masakatsu Shibasaki

  • Switching Enantiofacial Selectivities Using One Chiral Source: Catalytic Enantioselective Synthesis of the Key Intermediate for (20S)-Camptothecin Family by (S)-Selective Cyanosilylation of Ketones

    Kazuo Yabu;Shuji Masumoto;Shingo Yamasaki;Yoshitaka Hamashima

  • Copper‐Catalyzed Trifluoromethylation of Allylsilanes

    Ryo Shimizu;Hiromichi Egami;Yoshitaka Hamashima;Mikiko Sodeoka

  • A Catalytic Asymmetric Strecker‐Type Reaction: Interesting Reactivity Difference between TMSCN and HCN

    Masahiro Takamura;Yoshitaka Hamashima;Hiroyuki Usuda;Motomu Kanai

  • A Catalytic Asymmetric Strecker-Type Reaction: Interesting Reactivity Difference between TMSCN and HCN This work was supported by CREST and RFTF. We thank Professor Kobayashi and Dr. Ishitani at the University of Tokyo for kindly showing us their recent results and the procedure for the preparation of HCN. We also thank Professor Hoveyda in Boston College for kindly showing us his recent results.

    Takamura M;Hamashima Y;Usuda H;Kanai M

  • Total Synthesis of (+)-Chaetocin and its Analogues: Their Histone Methyltransferase G9a Inhibitory Activity

    Eriko Iwasa;Yoshitaka Hamashima;Shinya Fujishiro;Eisuke Higuchi

  • Direct C2-trifluoromethylation of indole derivatives catalyzed by copper acetate

    Ryo Shimizu;Hiromichi Egami;Tatsuya Nagi;Jungha Chae

  • Catalytic Asymmetric Addition of β‐Ketoesters to Various Imines by Using Chiral Palladium Complexes

    Yoshitaka Hamashima;Yoshitaka Hamashima;Naoki Sasamoto;Naoki Sasamoto;Daido Hotta;Daido Hotta;Hidenori Somei;Hidenori Somei

  • Pd(II)-catalyzed asymmetric addition of malonates to dihydroisoquinolines.

    Naoki Sasamoto;Christian Dubs;Yoshitaka Hamashima;Mikiko Sodeoka

  • A new entry to Pd-H chemistry: catalytic asymmetric conjugate reduction of enones with EtOH and a highly enantioselective synthesis of warfarin.

    Yasunori Tsuchiya;Yoshitaka Hamashima;Mikiko Sodeoka

  • Immobilization and reuse of Pd complexes in ionic liquid: efficient catalytic asymmetric fluorination and Michael reactions with beta-ketoesters.

    Yoshitaka Hamashima;Hisashi Takano;Daido Hotta;Mikiko Sodeoka

  • Catalytic enantioselective cyanosilylation of ketones: improvement of enantioselectivity and catalyst turn-over by ligand tuning

    Yoshitaka Hamashima;Motomu Kanai;Masakatsu Shibasaki

  • Amine-Salt-Controlled, Catalytic Asymmetric Conjugate Addition of Various Amines and Asymmetric Protonation

    Yoshitaka Hamashima;Hidenori Somei;Yuta Shimura;Toshihiro Tamura

  • Highly enantioselective cyanosilylation of aldehydes catalyzed by a Lewis acid–Lewis base bifunctional catalyst

    Yoshitaka Hamashima;Daisuke Sawada;Hiroyuki Nogami;Motomu Kanai

  • Diastereo- and Enantioselective Conjugate Addition of α-Ketoesters to Nitroalkenes Catalyzed by a Chiral Ni(OAc)2 Complex under Mild Conditions

    Ayako Nakamura;Sylvain Lectard;Daisuke Hashizume;Yoshitaka Hamashima

  • Catalytic Desymmetrization of Cyclohexadienes by Asymmetric Bromolactonization

    Kazutada Ikeuchi;Shunsuke Ido;Satoshi Yoshimura;Tomohiro Asakawa

  • Catalytic Enantioselective Fluorination of Oxindoles

    Y. Hamashima;T. Suzuki;H. Takano;Y. Shimura

Frequent Co-Authors

Mikiko Sodeoka
Mikiko Sodeoka Sagami Central Chemical Research Institute
Masakatsu Shibasaki
Masakatsu Shibasaki University of Tokyo
Motomu Kanai
Motomu Kanai University of Tokyo
Naoto Oku
Naoto Oku University of Shizuoka
Shuji Akai
Shuji Akai Osaka University
Tohru Fukuyama
Tohru Fukuyama Nagoya University
Minoru Yoshida
Minoru Yoshida University of Tokyo
Shingo Nishiyama
Shingo Nishiyama Hamamatsu Photonics (Japan)
Hideo Tsukada
Hideo Tsukada Hamamatsu Photonics (Japan)

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Studying Chemistry in the USA opens doors to diverse career paths that often intersect with related fields like pharmaceuticals and forensic science. For example, a career as a pharmaceutical sales representative combines a strong science background with business skills. Understanding the pharmaceutical sales salary expectations is crucial for those considering this dynamic role.

If you’re interested in clinical roles, becoming a pharmacist is a rewarding option. However, it’s important to research how much does it cost to become a pharmacist, as the education and licensing requirements can be significant investments.

Another related field is forensic science, which ties closely to Chemistry studies. Pursuing an online bachelor's degree in forensic science offers flexibility and affordability, helping students enter this specialized area without relocating.

Those fascinated by investigative work might consider roles like autopsy technicians. Exploring the specifics of autopsy technician jobs reveals important education requirements and job outlooks to help you make informed decisions.

Best Scientists Citing Yoshitaka Hamashima

Trending Scientists