Koichiro Oshima

25.3k total citations · 2 hit papers
562 papers, 19.4k citations indexed

About

Koichiro Oshima is a scholar working on Organic Chemistry, Inorganic Chemistry and Pharmaceutical Science. According to data from OpenAlex, Koichiro Oshima has authored 562 papers receiving a total of 19.4k indexed citations (citations by other indexed papers that have themselves been cited), including 533 papers in Organic Chemistry, 118 papers in Inorganic Chemistry and 66 papers in Pharmaceutical Science. Recurrent topics in Koichiro Oshima's work include Catalytic Cross-Coupling Reactions (145 papers), Asymmetric Synthesis and Catalysis (143 papers) and Catalytic C–H Functionalization Methods (135 papers). Koichiro Oshima is often cited by papers focused on Catalytic Cross-Coupling Reactions (145 papers), Asymmetric Synthesis and Catalysis (143 papers) and Catalytic C–H Functionalization Methods (135 papers). Koichiro Oshima collaborates with scholars based in Japan, Malaysia and United States. Koichiro Oshima's co-authors include Hideki Yorimitsu, Hiroshi Shinokubo, Kiitirô Utimoto, Hitosi Nozaki, Seijiro Matsubara, Koji Hirano, Kyoko Nozaki, Hirohisa Ohmiya, Kazuhiko Takai and Atsushi Inoue and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Chemical Communications.

In The Last Decade

Koichiro Oshima

556 papers receiving 18.8k citations

Hit Papers

align trajectories sort by overperformance

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.

Synthesis of dioxobis(tert-alkylimido)osmium(VIII) and oxotris(tert-alkylimido)osmium(VIII) complexes. Stereospecific vicinal diamination of olefins

1977 174 citations Koichiro Oshima et al. profile →
Osmium-catalyzed vicinal oxyamination of olefins by Chloramine-T

1976 149 citations Koichiro Oshima et al. The Journal of Organic Chemistry profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Koichiro Oshima	18.0k	4.0k	2.0k	1.5k	765	562	19.4k
Varinder K. Aggarwal	25.7k 1.4×	3.6k 0.9×	3.4k 1.7×	1.7k 1.2×	663 0.9×	490	27.1k
Mark Lautens	31.8k 1.8×	7.1k 1.8×	2.5k 1.2×	1.6k 1.0×	720 0.9×	526	33.2k
Paolo Melchiorre	19.4k 1.1×	3.3k 0.8×	2.4k 1.2×	1.7k 1.1×	927 1.2×	209	20.6k
Jiro Tsuji	14.3k 0.8×	3.6k 0.9×	2.2k 1.1×	632 0.4×	775 1.0×	314	15.7k
Ei‐ichi Negishi	18.0k 1.0×	3.6k 0.9×	2.1k 1.0×	606 0.4×	758 1.0×	335	19.2k
J. K. Stille	13.5k 0.8×	3.0k 0.8×	2.2k 1.1×	703 0.5×	1.6k 2.0×	264	16.3k
Guangbin Dong	15.1k 0.8×	3.6k 0.9×	1.1k 0.5×	751 0.5×	641 0.8×	261	16.3k
Sukbok Chang	29.7k 1.7×	6.9k 1.7×	3.9k 1.9×	831 0.6×	1.1k 1.4×	294	30.9k
Shun‐Ichi Murahashi	12.8k 0.7×	4.9k 1.2×	2.4k 1.2×	582 0.4×	2.0k 2.6×	297	14.6k
Ilhyong Ryu	12.6k 0.7×	2.1k 0.5×	1.3k 0.6×	1.1k 0.7×	848 1.1×	364	14.0k

Countries citing papers authored by Koichiro Oshima

Since Specialization

Citations

This map shows the geographic impact of Koichiro Oshima'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 Koichiro Oshima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichiro Oshima more than expected).

Fields of papers citing papers by Koichiro Oshima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichiro Oshima. 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 Koichiro Oshima. The network helps show where Koichiro Oshima may publish in the future.

Co-authorship network of co-authors of Koichiro Oshima

This figure shows the co-authorship network connecting the top 25 collaborators of Koichiro Oshima. A scholar is included among the top collaborators of Koichiro Oshima 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 Koichiro Oshima. Koichiro Oshima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Kondoh, Azusa, Hideki Yorimitsu, & Koichiro Oshima. (2010). 1‐Alkynylphosphines and Their Derivatives as Key Starting Materials in Creating New Phosphines. Chemistry - An Asian Journal. 5(3). 398–409. 37 indexed citations

Yoshida, Suguru, et al.. (2010). Reaction of 2‐(2,2,2‐Trifluoroethylidene)‐1,3‐dithiane 1‐Oxide with Ketones under Pummerer Conditions and Its Application to the Synthesis of 3‐Trifluoromethyl‐Substituted Five‐Membered Heteroarenes. Angewandte Chemie International Edition. 49(13). 2340–2343. 78 indexed citations

Yorimitsu, Hideki, Koichiro Oshima, & Akinori Sato. (2008). Thieme Chemistry Journal Awardees - Whereare They Now? Regio- and Stereoselective Radical Additionsof Thiols to Ynamides. Synlett. 2009(1). 28–31. 18 indexed citations

Yorimitsu, Hideki & Koichiro Oshima. (2008). Selective Reactions Based on Retro-allylation of Homoallyl Alcohols. Journal of Synthetic Organic Chemistry Japan. 66(4). 332–343. 2 indexed citations

Kondoh, Azusa, Hideki Yorimitsu, & Koichiro Oshima. (2007). Synthesis of Bulky Phosphines by Rhodium‐Catalyzed Formal [2 + 2 + 2] Cycloaddition Reactions of Tethered Diynes with 1‐Alkynylphosphine Sulfides.. ChemInform. 38(42). 1 indexed citations

Oshima, Koichiro. (2006). Highly Selective Organic Synthesis Based on Controlled Cleavage of Carbon-Metal Bond. Journal of Synthetic Organic Chemistry Japan. 64(1). 2–13. 2 indexed citations

Matsubara, Seijiro & Koichiro Oshima. (2005). Story Concerning about Autoclave -H-D Exchange Reaction of Organic Compounds in Deuterium Oxide under Supercritical Condition, Hydrothermal Condition, or Microwave Irradiation.. Journal of Synthetic Organic Chemistry Japan. 63(2). 154–161. 2 indexed citations

Ikeda, Yousuke, Hideki Yorimitsu, Hiroshi Shinokubo, & Koichiro Oshima. (2004). Cobalt‐Mediated Mizoroki–Heck‐Type Reaction of Epoxide with Styrene. Advanced Synthesis & Catalysis. 346(13-15). 1631–1634. 50 indexed citations

Inoue, Atsushi, Hiroshi Shinokubo, & Koichiro Oshima. (2003). Development of Novel Synthetic Reactions with Organomagnesium Reagents. Journal of Synthetic Organic Chemistry Japan. 61(4). 331–342. 5 indexed citations

10.

Kondo, Junichi, Atsushi Inoue, Hiroshi Shinokubo, & Koichiro Oshima. (2002). Generation and regioselective reactions of α,α-bis(silyl)-substituted allylcopper reagents—synthesis of 1,1-disilylalkenes. Tetrahedron Letters. 43(13). 2399–2402. 12 indexed citations

11.

Matsubara, Seijiro, Koichiro Oshima, & Eiichiro Matsubara. (2002). Ingredients of the Soup in the Chemist's Cauldron: Structural Analysis of Organometallics in the Solution by X-ray.. Journal of Synthetic Organic Chemistry Japan. 60(4). 383–388.

12.

Inoue, Atsushi, Junichi Kondo, Hiroshi Shinokubo, & Koichiro Oshima. (2002). Reactions ofgem-Dibromo Compounds with Trialkylmagnesate Reagents to Yield Alkylated Organomagnesium Compounds. Chemistry - A European Journal. 8(7). 1730–1740. 38 indexed citations

13.

Yorimitsu, Hideki, Hiroshi Shinokubo, Seijiro Matsubara, et al.. (2001). Triethylborane-Induced Bromine Atom-Transfer Radical Addition in Aqueous Media: Study of the Solvent Effect on Radical Addition Reactions. The Journal of Organic Chemistry. 66(23). 7776–7785. 100 indexed citations

14.

Shinokubo, Hiroshi & Koichiro Oshima. (1999). Organic Synthesis Using Organomanganese Compounds. Journal of Synthetic Organic Chemistry Japan. 57(1). 13–23. 7 indexed citations

15.

Matsumoto, Kozo, Koichiro Oshima, & Kiitirô Utimoto. (1996). Synthetic Organic Reaction of Silacyclobutane.. Journal of Synthetic Organic Chemistry Japan. 54(4). 289–299. 9 indexed citations

16.

Aoki, Yoshitaka, Koichiro Oshima, & Kiitirô Utimoto. (1995). PREPARATION OF ENOLATES FROM ALPHA -HALOKETONES WITH N-BULI, PHMGBR, OR ET2ZN VIA HALOGEN-METAL EXCHANGE REACTION. Chemistry Letters. 1995(6). 463–464. 4 indexed citations

17.

Oshima, Koichiro & Kiitirô Utimoto. (1989). New method of radical formation - Radical reactions with R3SnH-Et3B system.. Journal of Synthetic Organic Chemistry Japan. 47(1). 40–52. 22 indexed citations

18.

Tückmantel, Werner, Koichiro Oshima, & Hitosi Nozaki. (1986). 1,4‐Addition of triorganozincates and silyldiorganozincates to α,β‐unsaturated ketones. Chemische Berichte. 119(5). 1581–1593. 86 indexed citations

19.

Oshima, Koichiro. (1983). . Journal of Synthetic Organic Chemistry Japan. 41(4). 337–347. 2 indexed citations

20.

Oshima, Koichiro & Hitosi Nozaki. (1980). . Journal of Synthetic Organic Chemistry Japan. 38(5). 460–472. 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.

Explore authors with similar magnitude of impact