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Tamotsu Takahashi

Tamotsu Takahashi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 66 7311 6625 480 451 367 14905

Tamotsu Takahashi publications per year

The chart shows the history of publications by Tamotsu Takahashi between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Tamotsu Takahashi published across 59 years, from 1967 to 2025, averaging 7.5 papers a year. Output peaked at 27 publications in 2000. 2 of the 445 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2000. 1967: 1 publication 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 1 publication 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 2 publications 1979: 2 publications 1980: 4 publications 1981: 1 publication 1982: 1 publication 1983: 4 publications 1984: 1 publication 1985: 2 publications 1986: 7 publications 1987: 13 publications 1988: 5 publications 1989: 10 publications 1990: 14 publications 1991: 5 publications 1992: 10 publications 1993: 13 publications 1994: 17 publications 1995: 13 publications 1996: 8 publications 1997: 18 publications 1998: 25 publications 1999: 15 publications 2000: 27 publications 2001: 27 publications 2002: 20 publications 2003: 17 publications 2004: 16 publications 2005: 18 publications 2006: 14 publications 2007: 19 publications 2008: 11 publications 2009: 13 publications 2010: 10 publications 2011: 14 publications 2012: 5 publications 2013: 10 publications 2014: 6 publications 2015: 6 publications 2016: 4 publications 2017: 7 publications 2018: 2 publications 2019: 2 publications 2020: 1 publication 2021: 0 publications 2022: 1 publication 2023: 0 publications 2024: 1 publication 2025: 1 publication
1967 2025

445 publications in total across all disciplines

View publications per year as a table
Tamotsu Takahashi: publications per year, 1967 to 2025
Year Publications
1967 1
1968 0
1969 0
1970 0
1971 0
1972 1
1973 0
1974 1
1975 0
1976 0
1977 0
1978 2
1979 2
1980 4
1981 1
1982 1
1983 4
1984 1
1985 2
1986 7
1987 13
1988 5
1989 10
1990 14
1991 5
1992 10
1993 13
1994 17
1995 13
1996 8
1997 18
1998 25
1999 15
2000 27
2001 27
2002 20
2003 17
2004 16
2005 18
2006 14
2007 19
2008 11
2009 13
2010 10
2011 14
2012 5
2013 10
2014 6
2015 6
2016 4
2017 7
2018 2
2019 2
2020 1
2021 0
2022 1
2023 0
2024 1
2025 1
Total 445
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Tamotsu Takahashi 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 Tamotsu Takahashi 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, 361–380 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: 367 publications — 76th percentile

76% 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
361–380 522 367
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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Tamotsu Takahashi 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 Tamotsu Takahashi 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, 66–67 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: 66 D-Index — 60th percentile

60% 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
62–63 834
64–65 731
66–67 775 66
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

Tamotsu Takahashi is a researcher affiliated with Hokkaido University in Japan. Their work primarily spans the fields of Biochemistry, Genetics and Molecular Biology, and Medicine, with an emphasis on subfields such as Molecular Medicine, Pharmacology, Endocrinology, and Applied Microbiology and Biotechnology.

The main topics of Takahashi's research include:

  • Antibiotic Resistance in Bacteria
  • Antibiotics Pharmacokinetics and Efficacy
  • Enterobacteriaceae and Cronobacter Research
  • Antibiotic Use and Resistance

Takahashi has contributed to recent scientific literature with publications focusing on bacterial resistance and treatment responses. Notable papers include:

  • "The Clinical Evaluation of Third-generation Cephalosporins As Definitive Therapy for Enterobacter spp. and Klebsiella aerogenes Bacteremia," published in 2022 in Internal Medicine
  • "Evaluation of predictors of third-generation cephalosporin non-susceptibility and factors affecting recurrence or death in bacteremia caused by Citrobacter freundii complex, Enterobacter cloacae complex, and Klebsiella aerogenes," published in 2024 in the Journal of Chemotherapy

The frequent publication venues for Takahashi's works include:

  • Internal Medicine
  • Journal of Chemotherapy

Collaboration with peers is a significant aspect of Takahashi's research activities. Frequent coauthors include:

  • Kazuhiro Kobayashi
  • Atsuko Hata
  • Waki Imoto
  • Shigeki Kakuno
  • Wataru Shibata

Best Publications

  • Reaction of zirconocene dichloride with alkyllithiums or alkyl grignard reagents as a convenient method for generating a “zirconocene” equivalant and its use in zirconium-promoted cyclization of alkenes, alkynes, dienes, enynes, and diynes☆

    Ei-ichi Negishi;Fredrik E Cederbaum;Tamotsu Takahashi

  • Metal-promoted cyclization. 19. Novel bicyclization of enynes and diynes promoted by zirconocene derivatives and conversion of zirconabicycles into bicyclic enones via carbonylation

    Eiichi Negishi;Steven J. Holmes;James M. Tour;Joseph A. Miller

  • Patterns of Stoichiometric and Catalytic Reactions of Organozirconium and Related Complexes of Synthetic Interest

    Ei-Ichi Negishi;Tamotsu Takahashi

  • Palladium- or nickel-catalyzed reactions of alkenylmetals with unsaturated organic halides as a selective route to arylated alkenes and conjugated dienes: scope, limitations, and mechanism

    E. Negishi;T. Takahashi;S. Baba;D.E. Van Horn

  • Cycloaddition Reaction of Zirconacyclopentadienes to Alkynes: Highly Selective Formation of Benzene Derivatives from Three Different Alkynes

    Tamotsu Takahashi;Zhenfeng Xi;Akiko Yamazaki;Yuanhong Liu

  • Selective preparation of pyridines, pyridones, and iminopyridines from two different alkynes via azazirconacycles.

    Tamotsu Takahashi;Fu-Yu Tsai;Yanzhong Li;Hui Wang

  • Facile cleavage of the CβCβ′ bond of zirconacyclopentenes. Convenient method for selectively coupling alkynes with alkynes, nitriles, and aldehydes

    Tamotsu Takahashi;Motohiro Kageyama;Victor Denisov;Ryuichiro Hara

  • Remarkably pair- and regioselective carbon-carbon bond-forming reaction of zirconacyclopentane derivatives with Grignard reagents

    Tamotsu Takahashi;Takashi Seki;Yu Nitto;Masahiko Saburi

  • Alkene and Alkyne Complexes of Zirconocene. Their Preparation, Structure, and Novel Transformations.

    Ei-ichi Negishi;Tamotsu Takahashi

  • Copper-Mediated Coupling of Zirconacyclopentadienes with Dihalo Aromatic Compounds. Formation of Fused Aromatic Rings

    Tamotsu Takahashi;Ryuichiro Hara;Yasushi Nishihara;Martin Kotora

  • Straightforward Method for Synthesis of Highly Alkyl-Substituted Naphthacene and Pentacene Derivatives by Homologation

    Tamotsu Takahashi;Masanori Kitamura;and Baojian Shen;Kiyohiko Nakajima

  • Multiple Mechanistic Pathways for Zirconium-Catalyzed Carboalumination of Alkynes. Requirements for Cyclic Carbometalation Processes Involving C−H Activation

    Ei-ichi Negishi;Denis Y. Kondakov;Danièle Choueiry;Kayoko Kasai

  • Organozirconium Compounds in Organic Synthesis

    Ei-ichi Negishi;Tamotsu Takahashi

  • Carbon−Carbon Bond Formation Reaction of Zirconacyclopentadienes with Alkynes in the Presence of Ni(II)-complexes

    Tamotsu Takahashi;Fu-Yu Tsai;Yanzhong Li;Kiyohiko Nakajima

  • Zirconium-catalyzed, highly regioselective hydrosilation reaction of alkenes and X-ray structures of silyl(hydrido)zirconocene derivatives

    Tamotsu Takahashi;Maki Hasegawa;Noriyuki Suzuki;Masahiko Saburi

  • Coupling reaction of zirconacyclopentadienes with dihalonaphthalenes and dihalopyridines: a new procedure for the preparation of substituted anthracenes, quinolines, and isoquinolines.

    Tamotsu Takahashi;Yanzhong Li;Petr Stepnicka;Masanori Kitamura

  • Carbon-Carbon Bond Cleavage and Selective Transformation of Zirconacycles

    Tamotsu Takahashi;Martin Kotora;Ryuichiro Hara;Zhenfeng Xi

  • Highly Selective and Practical Alkyne-Alkyne Cross-Coupling Using Cp2ZrBu2 and Ethylene

    Zhenfeng Xi;Ryuichiro Hara;Tamotsu Takahashi

  • Selective Formation of Substituted Pyridines from Two Different Alkynes and a Nitrile: Novel Coupling Reaction of Azazirconacyclopentadienes with Alkynes

    Tamotsu Takahashi;and Fu-Yu Tsai;Martin Kotora

  • Metal-promoted cyclization. 28. Regioselective and diastereoselective alkyl-alkene and alkene-alkene coupling promoted by zirconocene and hafnocene

    Douglas R. Swanson;Christophe J. Rousset;Eiichi Negishi;Tamotsu Takahashi

Frequent Co-Authors

Masamichi Ogasawara
Masamichi Ogasawara University of Tokushima
Martin Kotora
Martin Kotora Charles University
Kiyohiko Nakajima
Kiyohiko Nakajima Aichi University of Education
Ei-ichi Negishi
Ei-ichi Negishi Purdue University West Lafayette
Noriyuki Suzuki
Noriyuki Suzuki National Institute for Environmental Studies
Chanjuan Xi
Chanjuan Xi Tsinghua University
Wen-Hua Sun
Wen-Hua Sun Chinese Academy of Sciences
Yasushi Nishihara
Yasushi Nishihara Okayama University
Masanobu Hidai
Masanobu Hidai University of Tokyo
Zhenfeng Xi
Zhenfeng Xi Peking University

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