Sei Otsuka

5.7k total citations · 1 hit paper
129 papers, 4.0k citations indexed

About

Sei Otsuka is a scholar working on Organic Chemistry, Inorganic Chemistry and Oncology. According to data from OpenAlex, Sei Otsuka has authored 129 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 100 papers in Organic Chemistry, 55 papers in Inorganic Chemistry and 35 papers in Oncology. Recurrent topics in Sei Otsuka's work include Organometallic Complex Synthesis and Catalysis (43 papers), Asymmetric Hydrogenation and Catalysis (37 papers) and Metal complexes synthesis and properties (33 papers). Sei Otsuka is often cited by papers focused on Organometallic Complex Synthesis and Catalysis (43 papers), Asymmetric Hydrogenation and Catalysis (37 papers) and Metal complexes synthesis and properties (33 papers). Sei Otsuka collaborates with scholars based in Japan, United States and Australia. Sei Otsuka's co-authors include Akira Nakamura, Toshikatsu Yoshida, Yoshitaka Tatsuno, Kazuhide Tani, Tomohiro Yoshida, Akira Konishi, Tamon Okano, Susumu Akutagawa, Tsuneaki Yamagata and James A. Ibers and has published in prestigious journals such as Journal of the American Chemical Society, JNCI Journal of the National Cancer Institute and FEBS Letters.

In The Last Decade

Sei Otsuka

128 papers receiving 3.7k citations

Hit Papers

Metal-assisted terpenoid synthesis. 7. Highly enantiosele... 1984 2026 1998 2012 1984 50 100 150
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Metal-assisted terpenoid synthesis. 7. Highly enantioselective isomerization of prochiral allylamines catalyzed by chiral diphosphine rhodium(I) complexes. Preparation of optically active enamines
    1984 187 citations Kazuhide Tani, Tsuneaki Yamagata et al. Journal of the American Chemical Society profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sei Otsuka Japan 37 3.1k 1.9k 511 438 361 129 4.0k
László Markó Hungary 31 2.3k 0.7× 1.9k 1.0× 334 0.7× 394 0.9× 234 0.6× 165 3.1k
Cornelius G. Kreiter Germany 37 3.6k 1.2× 1.9k 1.0× 392 0.8× 391 0.9× 187 0.5× 203 4.5k
Myron Rosenblum United States 37 3.9k 1.3× 1.3k 0.7× 521 1.0× 495 1.1× 341 0.9× 135 4.8k
Kazuhide Tani Japan 31 2.5k 0.8× 1.8k 0.9× 270 0.5× 227 0.5× 363 1.0× 127 3.1k
Reinhard Benn Germany 33 3.3k 1.1× 1.9k 1.0× 316 0.6× 480 1.1× 219 0.6× 176 4.3k
Kenneth W. Muir United Kingdom 35 3.7k 1.2× 2.1k 1.1× 1.1k 2.1× 686 1.6× 197 0.5× 249 4.6k
John P. Hutchinson United States 28 1.8k 0.6× 1.6k 0.8× 797 1.6× 516 1.2× 228 0.6× 96 2.9k
Russell P. Hughes United States 39 4.4k 1.4× 2.1k 1.1× 314 0.6× 1.0k 2.3× 301 0.8× 233 5.7k
Nicholas C. Payne Canada 27 1.8k 0.6× 1.1k 0.6× 532 1.0× 386 0.9× 134 0.4× 126 2.5k
John Fawcett United Kingdom 33 3.2k 1.0× 1.9k 1.0× 825 1.6× 527 1.2× 413 1.1× 208 4.1k

Countries citing papers authored by Sei Otsuka

Since Specialization
Citations

This map shows the geographic impact of Sei Otsuka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sei Otsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sei Otsuka more than expected).

Fields of papers citing papers by Sei Otsuka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sei Otsuka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sei Otsuka. The network helps show where Sei Otsuka may publish in the future.

Co-authorship network of co-authors of Sei Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Sei Otsuka. A scholar is included among the top collaborators of Sei Otsuka based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sei Otsuka. Sei Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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INOUE, Shin-ichi, Hidemasa Takaya, Kazuhide Tani, et al.. (1990). Mechanism of the asymmetric isomerization of allylamines to enamines catalyzed by 2,2'-bis(diphenylphosphino)-1,1'binaphthyl-rhodium complexes. Journal of the American Chemical Society. 112(12). 4897–4905. 134 indexed citations
4.
Tani, Kazuhide, et al.. (1989). Preparation of optically active peralkyldiphosphines and their use, as the rhodium(I) complex, in the asymmetric catalytic hydrogenation of ketones. Journal of Organometallic Chemistry. 370(1-3). 203–221. 40 indexed citations
5.
Payne, Nicholas C., et al.. (1983). Synthesis and x-ray structures of the conformational isomers of the mixed bimetal complex (t--BuNC)4Mo(μ-t-BuS)2CuBr. Journal of the American Chemical Society. 105(2). 245–251. 21 indexed citations
6.
Tani, Kazuhide, Tsuneaki Yamagata, Sei Otsuka, et al.. (1982). Cationic rhodium(I) complex-catalysed asymmetric isomerisation of allylamines to optically active enamines. Journal of the Chemical Society Chemical Communications. 600–600. 72 indexed citations
7.
Yoshida, Toshikatsu, et al.. (1981). Versatility of tetrakis(tert-butylthiolato)molybdenum. Selective formation of a series of thiolato-molybdenum(I), -molybdenum(II), and -molybdenum(IV) compounds. Journal of the American Chemical Society. 103(12). 3572–3574. 39 indexed citations
8.
Hirotsu, Ken, Taiichi Higuchi, Kazuyuki Tatsumi, et al.. (1981). A highly distorted octahedral d4 compound, cis-Mo(tert-BuS)2(tert-BuNC)4. Journal of the American Chemical Society. 103(19). 5772–5778. 36 indexed citations
9.
Yoshida, Toshikatsu, Yasuhiko Ueda, & Sei Otsuka. (1978). Activation of water molecule. 1. Intermediates bearing on the water gas shift reaction catalyzed by platinum(0) complexes. Journal of the American Chemical Society. 100(12). 3941–3942. 110 indexed citations
10.
Nakamura, Akira, Akira Konishi, Yoshitaka Tatsuno, & Sei Otsuka. (1978). A highly enantioselective synthesis of cyclopropane derivatives through chiral cobalt(II) complex catalyzed carbenoid reaction. General scope and factors determining the enantioselectivity. Journal of the American Chemical Society. 100(11). 3443–3448. 141 indexed citations
11.
Nakamura, Akira, Kenji Doi, Kazuyuki Tatsumi, & Sei Otsuka. (1976). Catalysis by low-valent diamagnetic transition-metal complexes of the cis—trans isomerization of azobenzenes. Journal of Molecular Catalysis. 1(6). 417–429. 7 indexed citations
12.
Otsuka, Sei & Kikuo Ataka. (1976). Isocyanide insertion in alkyl– and vinyl–metal bonds of square-planar palladium (II) and platinum(II): mechanisms and stereochemistry. Journal of the Chemical Society Dalton Transactions. 327–334. 29 indexed citations
13.
Yoshida, Toshikatsu, Tamon Okano, & Sei Otsuka. (1976). Some square-planar alkoxo- and hydroxo-complexes of Group 8: preparation, bonding, and novel condensation reactions with active methyl compounds. Journal of the Chemical Society Dalton Transactions. 993–993. 66 indexed citations
14.
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Nakamura, Akira & Sei Otsuka. (1973). Reaction of transition metal dihydrides. III. Stereochemistry and mechanism of stoichiometric hydrogenation of olefins by dihydrobis (.pi.-cyclopentadienyl) molybdenum. Journal of the American Chemical Society. 95(22). 7262–7272. 40 indexed citations
16.
Otsuka, Sei & T. TAKETOMI. (1971). π-Cycloheptadienyl-π-cyclo-octa-1,5-dienecobalt; fluxional bonding. Journal of the Chemical Society A Inorganic Physical Theoretical. 0(0). 583–587. 3 indexed citations
17.
Otsuka, Sei, et al.. (1969). Rhodium(I)-catalysed tetramerisation of allene. Journal of the Chemical Society D Chemical Communications. 191–191. 19 indexed citations
18.
Otsuka, Sei, et al.. (1967). Catalytic regular polymerization of propadiene and alkylpropadienes. European Polymer Journal. 3(1). 73–83. 25 indexed citations
19.
Newman, Melvin S. & Sei Otsuka. (1958). Rate and Equilibrium Constants for the Reaction of Maleic Anhydride with the Methyl-1,2-Benzanthracenes<xref ref-type="fn" rid="FN1">2</xref>. JNCI Journal of the National Cancer Institute. 21(4). 721–8. 7 indexed citations
20.
Newman, Melvin S. & Sei Otsuka. (1958). Syntheses of 1'-Methyl- and 4'-Methyl-1,2-benzanthracenes1. The Journal of Organic Chemistry. 23(6). 797–799. 8 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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