Kunio Hiroi

3.7k citations

132 papers · 3.0k · 1 hit paper · h-index 29

Impact in

Organic Chemistry top 0.5%
- Asymmetric Synthesis and Catalysis
- Synthetic Organic Chemistry Methods
- Catalytic C–H Functionalization Methods
- Chemical Synthesis and Reactions
- Sulfur-Based Synthesis Techniques
- Catalytic Alkyne Reactions
Inorganic Chemistry top 1%
- Asymmetric Hydrogenation and Catalysis

Papers in

Organic Chemistry 125
- Asymmetric Synthesis and Catalysis 71
- Synthetic Organic Chemistry Methods 28
- Sulfur-Based Synthesis Techniques 22
- Chemical Synthesis and Reactions 21
- Cyclopropane Reaction Mechanisms 16
- Chemical synthesis and alkaloids 13
- Catalytic Alkyne Reactions 13
Inorganic Chemistry 37
- Asymmetric Hydrogenation and Catalysis 37

Co-authors: Barry M. Trost (6 shared papers)THOMAS N. SALZMANN (1 shared paper)Yoshio Suzuki (9 shared papers)Ikuko Abe (10 shared papers)Shuko Sato (23 shared papers)Shun‐ichi Yamada (7 shared papers)Takeyuki Suzuki (5 shared papers)Kazuhiro Watanabe (9 shared papers)
Journals: Chemical and Pharmaceutical Bulletin (27 papers)Tetrahedron Letters (23 papers)Chemistry Letters (21 papers)Tetrahedron Asymmetry (10 papers)Journal of the American Chemical Society (6 papers)
Partner nations: Japan United States China

In The Last Decade

Kunio Hiroi

131 papers receiving 2.7k citations

Kunio Hiroi's Hit Papers

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New synthetic reactions. Sulfenylations and dehydrosulfenylations of esters and ketones 1976 · 432 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

1976 Journal of the American Chemical Society

Peers

Countries citing papers authored by Kunio Hiroi

Since Specialization

Citations

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

Fields of papers citing papers by Kunio Hiroi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Kunio Hiroi, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Kunio Hiroi Line = papers co-authored together Kunio Hiroi links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 132 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	New synthetic reactions. Sulfenylations and dehydrosulfenylations of esters and ketones Journal of the American Chemical Society ·Barry M. Trost, THOMAS N. SALZMANN, Kunio Hiroi Hit paper breakdown →	1976	432
2	Mild and Chemoselective Synthesis of Lactones from Diols Using a Novel Metal−Ligand Bifunctional Catalyst Organic Letters ·Takeyuki Suzuki, Kenji Morita, Mika Tsuchida, Kunio Hiroi	2002	95
3	New synthetic methods. 1,2-(Alkylative) carbonyl transpositions Journal of the American Chemical Society ·Barry M. Trost, Kunio Hiroi, Seizi Kurozumi	1975	81
4	Catalytic use of chiral phosphine ligands in asymmetric Pauson–Khand reactions Tetrahedron Asymmetry ·Kunio Hiroi, Takashi Watanabe, Ryoko Kawagishi, Ikuko Abe	2000	79
5	Iridium-Catalyzed Oppenauer Oxidations of Primary Alcohols Using Acetone or 2-Butanone as Oxidant The Journal of Organic Chemistry ·Takeyuki Suzuki, Kenji Morita, Mika Tsuchida, Kunio Hiroi	2003	76
6	(S)-Proline-derived new chiral ligands with phosphino, organosulfur or organoselenenyl functionality as an enantiocontrollable coordinating element Tetrahedron Asymmetry ·Kunio Hiroi, Yoshio Suzuki, Ikuko Abe	1999	76
7	New Chiral Sulfoxide Ligands Possessing a Phosphano or Phosphanoamino Functionality in Palladium-Catalyzed Asymmetric Allylic Nucleophilic Substitution Reactions Tetrahedron ·Kunio Hiroi, Yoshio Suzuki, Ikuko Abe, Ryoko Kawagishi	2000	73
8	Asymmetric catalytic Pauson–Khand reactions with chiral phosphine ligands: Dramatic effects of substituents in 1,6-enyne systems Tetrahedron Letters ·Kunio Hiroi, Takashi Watanabe, Ryoko Kawagishi, Ikuko Abe	2000	73
9	Asymmetric induction reactions. V. The palladium-catalyzed asymmetric .alpha.-allylation of carbonyl compounds with chiral allyl esters via enamines and imines The Journal of Organic Chemistry ·Kunio Hiroi, Jun Abe, Kyoko Suya, Shuko Sato, Toshihiro Koyama	1994	56
10	Chiral β-phosphino sulfoxides as chiral ligands in palladium-catalyzed asymmetric allylic nucleophilic substitution reactions Tetrahedron Letters ·Kunio Hiroi, Yoshio Suzuki, Ryoko Kawagishi	1999	53
11	New chiral o-(phosphinoamido)phenyl sulfoxide ligands in palladium-catalyzed asymmetric allylic alkylations Tetrahedron Letters ·Kunio Hiroi, Yoshio Suzuki	1998	53
12	Synthesis of enantiopure phthalides including 3‐butylphthalide, a fragrance component of celery oil, and determination of their absolute configurations Chirality ·Masashi Kosaka, Satoshi Sekiguchi, Junpei Naito, Makoto Uemura, Shunsuke Kuwahara, Masataka Watanabe, Nobuyuki Harada, Kunio Hiroi	2005	51
13	Asymmetric synthesis with amino acid I asymmetric induction in the alkylation of keto-enamine Tetrahedron Letters ·Shun‐ichi Yamada, Kunio Hiroi, Kazuo Achiwa	1969	51
14	Catalytic asymmetric oxidative lactonizations of meso-diols using a chiral iridium complex Tetrahedron Letters ·Takeyuki Suzuki, Kenji Morita, Yoshimi Matsuo, Kunio Hiroi	2003	48
15	ASYMMETRIC INDUCTION IN THE PALLADIUM-CATALYZED SULFONYLATION OF ALLYLIC SULFINATES AND ACETATES WITH CHIRAL PHOSPHINE LIGANDS Chemistry Letters ·Kunio Hiroi, K. MAKINO	1986	48
16	Stereochemical Studies. XXIX. Asymmetric Synthesis of 2-Alkylcyclohexanones via optically Active Lithioenamines Chemical and Pharmaceutical Bulletin ·Mutsuyoshi Kitamoto, Kunio Hiroi, Shiro Terashima, Shun‐ichi Yamada	1974	48
17	Stereochemical Studies. IX. Asymmetric Synthesis of 2-Alkylcyclo hexanones with Enamine Alkylation Chemical and Pharmaceutical Bulletin ·Kunio Hiroi, Kazuo Achiwa, Shun‐ichi Yamada	1972	43
18	Stereochemical studies. XXXVIII. Asymmetric synthesis of the key compounds for the synthesis of optically active diterpenes. Asymmetric synthesis of optically active 1,2,3,4,5,6-7,8,8a-octahydro-8a-methyl-3,8-naphthalenedione derivatives with L-proline derivatives. Chemical and Pharmaceutical Bulletin ·Kunio Hiroi, Shun‐ichi Yamada	1975	40
19	New stereocontrolled approach to spirosesquiterpenes. Synthesis of acorenone B Journal of the American Chemical Society ·Barry M. Trost, Kunio Hiroi, Norman L. Holy	1975	40
20	Transition metal-catalyzed asymmetric vinylcyclopropane-cyclopentene rearrangements. Asymmetric synthesis of cyclopentane derivatives using chiral sulfoxides as chiral sources Tetrahedron Letters ·Kunio Hiroi, Yoshihisa ARINAGA	1994	39

About Kunio Hiroi

Kunio Hiroi is a scholar working on Organic Chemistry, Inorganic Chemistry, Spectroscopy, Molecular Biology and Pharmaceutical Science, having authored 132 papers that have together received 3.0k indexed citations. Recurring topics across this work include Asymmetric Synthesis and Catalysis (71 papers), Asymmetric Hydrogenation and Catalysis (37 papers), Synthetic Organic Chemistry Methods (28 papers), Sulfur-Based Synthesis Techniques (22 papers), Chemical Synthesis and Reactions (21 papers), Cyclopropane Reaction Mechanisms (16 papers), Chemical synthesis and alkaloids (13 papers) and Catalytic Alkyne Reactions (13 papers). The work is most often cited by research in Organic Chemistry (2.7k citations), Inorganic Chemistry (885 citations), Toxicology (76 citations), Spectroscopy (250 citations) and Process Chemistry and Technology (42 citations). Kunio Hiroi has collaborated with scholars based in Japan, United States and China. Frequent co-authors include Barry M. Trost, THOMAS N. SALZMANN, Yoshio Suzuki, Ikuko Abe, Shuko Sato, Shun‐ichi Yamada, Takeyuki Suzuki, Kazuhiro Watanabe, Kenji Morita and Paul A. Grieco. Their work appears in journals such as Chemical and Pharmaceutical Bulletin, Tetrahedron Letters, Chemistry Letters, Tetrahedron Asymmetry and Journal of the American Chemical Society.

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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