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

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 →

Peers

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

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20 of 20 papers shown

#	Work	Indexed citations
1	Copper‐Catalyzed Extended Pummerer Reactions of Ketene Dithioacetal Monoxides with Alkynyl Sulfides and Ynamides with an Accompanying Oxygen Rearrangement 2013 ·Chemistry - A European Journal ·Kei Murakami, (unknown), Hiroshi Matsubara, Suguru Yoshida, Hideki Yorimitsu, Koichiro Oshima	29
2	(1‐Alkynyl)dicarbonylcyclopentadienyliron Complexes as Electron‐Rich Alkynes in Organic Synthesis: BF₃‐Mediated [2+2] Cycloaddition/Ring‐Opening Providing (2‐Alkenyl‐1‐imino)iron Complexes 2011 ·Chemistry - A European Journal ·(unknown), Shigeo Yasuda, Hideki Yorimitsu, Koichiro Oshima	10
3	1‐Alkynylphosphines and Their Derivatives as Key Starting Materials in Creating New Phosphines 2010 ·Chemistry - An Asian Journal ·Azusa Kondoh, Hideki Yorimitsu, Koichiro Oshima	37
4	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 2010 ·Angewandte Chemie International Edition ·(unknown), Suguru Yoshida, Hideki Yorimitsu, Koichiro Oshima	78
5	Synthesis of Aziridines by Palladium‐Catalyzed Reactions of Allylamines with Aryl and Alkenyl Halides: Evidence of a syn‐Carboamination Pathway 2009 ·Angewandte Chemie International Edition ·Sayuri Hayashi, Hideki Yorimitsu, Koichiro Oshima	65
6	Palladium‐Catalyzed (N‐Oxido‐2‐pyridinyl)methyl Transfer from 2‐(2‐Hydroxyalkyl)pyridine N‐Oxide to Aryl Halides by β‐Carbon Elimination 2009 ·Chemistry - An Asian Journal ·(unknown), Takashi Niwa, Hideki Yorimitsu, Koichiro Oshima	13
7	Palladium-catalysed arylative cyclisation of N-allylacetamides with aryl halides yielding benzyl-substituted oxazolines 2009 ·Chemical Communications ·Daishi Fujino, Sayuri Hayashi, Hideki Yorimitsu, Koichiro Oshima	7
8	Thieme Chemistry Journal Awardees - Whereare They Now? Regio- and Stereoselective Radical Additionsof Thiols to Ynamides 2008 ·Synlett ·Hideki Yorimitsu, Koichiro Oshima, Akinori Sato	18
9	Nickel-catalysed reactions with trialkylboranes and silacyclobutanes 2008 ·Chemical Communications ·Koji Hirano, Hideki Yorimitsu, Koichiro Oshima	47
10	Extended Pummerer Reaction of Arylketene Dithioacetal Monoxides with Aromatic Compounds by Means of Trifluoromethanesulfonic Anhydride 2008 ·Chemistry Letters ·Suguru Yoshida, Hideki Yorimitsu, Koichiro Oshima	31
11	Synthesis of Bulky Phosphines by Rhodium‐Catalyzed Formal [2 + 2 + 2] Cycloaddition Reactions of Tethered Diynes with 1‐Alkynylphosphine Sulfides. 2007 ·ChemInform ·Azusa Kondoh, Hideki Yorimitsu, Koichiro Oshima	1
12	Synthesis of CpCH2PPh2 and its use as a ligand for the nickel-catalysed cross-coupling reaction of alkyl halides with aryl Grignard reagents 2006 ·Chemical Communications* ·(unknown), Hideki Yorimitsu, Koichiro Oshima	23
13	Cobalt‐Catalyzed syn Hydrophosphination of Alkynes 2005 ·Angewandte Chemie International Edition ·Hirohisa Ohmiya, Hideki Yorimitsu, Koichiro Oshima	61
14	Consecutive Double 1,2‐Migration of Two Different Groups in Silyl(dichloromethyl)cuprates 2003 ·Angewandte Chemie International Edition ·Junichi Kondo, Yuki Ito, Hiroshi Shinokubo, Koichiro Oshima	11
15	Stereocontrolled addition of enolates to chiral 2‐acyl‐1,3‐oxathiane derivatives 2002 ·Chirality ·Seijiro Matsubara, (unknown), (unknown), (unknown), Bohari M. Yamin, Kiitirô Utimoto, Koichiro Oshima	7
16	Stereoselective Pinacol-Type Rearrangement of 2,3-Epoxy Alcohols with Retention of Configuration Mediated by Bis(iodozincio)methane 2002 ·Angewandte Chemie International Edition ·Seijiro Matsubara, Hiromasa Yamamoto, Koichiro Oshima	20
17	Triethylborane-Induced Bromine Atom-Transfer Radical Addition in Aqueous Media: Study of the Solvent Effect on Radical Addition Reactions 2001 ·The Journal of Organic Chemistry ·Hideki Yorimitsu, Hiroshi Shinokubo, Seijiro Matsubara, Koichiro Oshima, Kiyoyuki Omoto, Hiroshi Fujimoto	100
18	A Facile Generation of a Cyclopropylzinc Compound from an Alkenylzinc Derivative and Its Reaction with Electrophiles 1998 ·Angewandte Chemie International Edition ·(unknown), Hiroshi Shinokubo, Koichiro Oshima	15
19	PREPARATION OF ENOLATES FROM ALPHA -HALOKETONES WITH N-BULI, PHMGBR, OR ET2ZN VIA HALOGEN-METAL EXCHANGE REACTION 1995 ·Chemistry Letters ·Yoshitaka Aoki, Koichiro Oshima, Kiitirô Utimoto	4
20	1,4‐Addition of triorganozincates and silyldiorganozincates to α,β‐unsaturated ketones 1986 ·Chemische Berichte ·Werner Tückmantel, Koichiro Oshima, Hitosi Nozaki	86

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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