Ryoichi Obayashi

586 total citations
12 papers, 457 citations indexed

About

Ryoichi Obayashi is a scholar working on Organic Chemistry, Toxicology and Pharmaceutical Science. According to data from OpenAlex, Ryoichi Obayashi has authored 12 papers receiving a total of 457 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Organic Chemistry, 7 papers in Toxicology and 2 papers in Pharmaceutical Science. Recurrent topics in Ryoichi Obayashi's work include Sulfur-Based Synthesis Techniques (10 papers), Chemical Synthesis and Reactions (8 papers) and Organoselenium and organotellurium chemistry (7 papers). Ryoichi Obayashi is often cited by papers focused on Sulfur-Based Synthesis Techniques (10 papers), Chemical Synthesis and Reactions (8 papers) and Organoselenium and organotellurium chemistry (7 papers). Ryoichi Obayashi collaborates with scholars based in Japan. Ryoichi Obayashi's co-authors include Akiya Ogawa, Noboru Sonoda, Toshikazu Hirao, K. YOKOYAMA, Mikio Doi, Nobuaki Kambe, Toshikazu Hirao, Hiroshi Yokoyama, Hiromichi Tanaka and Li‐Biao Han and has published in prestigious journals such as The Journal of Organic Chemistry, Tetrahedron and Tetrahedron Letters.

In The Last Decade

Ryoichi Obayashi

12 papers receiving 441 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoichi Obayashi Japan 9 436 206 34 28 19 12 457
K. YOKOYAMA Japan 6 325 0.7× 156 0.8× 24 0.7× 23 0.8× 19 1.0× 9 345
Alexander S. Sigeev Russia 10 419 1.0× 162 0.8× 23 0.7× 56 2.0× 31 1.6× 20 449
A. P. Avdeenko Ukraine 10 305 0.7× 164 0.8× 17 0.5× 14 0.5× 10 0.5× 88 342
S. Riches United Kingdom 3 489 1.1× 30 0.1× 25 0.7× 34 1.2× 17 0.9× 3 506
А. В. Мартынов Russia 11 317 0.7× 187 0.9× 12 0.4× 58 2.1× 26 1.4× 67 369
Kaname Tsuchii Japan 13 426 1.0× 73 0.4× 155 4.6× 71 2.5× 37 1.9× 17 510
Prasanjit Ghosh India 16 602 1.4× 51 0.2× 48 1.4× 46 1.6× 19 1.0× 32 627
Bruce J. Murray United States 9 226 0.5× 131 0.6× 4 0.1× 33 1.2× 43 2.3× 13 291
Sabbavarapu Narayana Murthy India 10 445 1.0× 61 0.3× 12 0.4× 38 1.4× 37 1.9× 13 457
Preecha Ngoviwatchai United States 11 331 0.8× 23 0.1× 23 0.7× 34 1.2× 19 1.0× 14 346

Countries citing papers authored by Ryoichi Obayashi

Since Specialization
Citations

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

Fields of papers citing papers by Ryoichi Obayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoichi Obayashi

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

All Works

12 of 12 papers shown
1.
Ogawa, Akiya, et al.. (1998). Highly Regioselective Thioselenation of Acetylenes by Using a (PhS)2−(PhSe)2 Binary System. The Journal of Organic Chemistry. 63(3). 881–884. 68 indexed citations
2.
Obayashi, Ryoichi, et al.. (1998). ChemInform Abstract: Highly Regioselective Thioselenation of Acetylenes by Using a (PhS)2—(PhSe)2 Binary System.. ChemInform. 29(26). 1 indexed citations
3.
Ogawa, Akiya, et al.. (1998). Highly Selective Thioselenation of Vinylcyclopropanes with a (PhS)2−(PhSe)2 Binary System and Its Application to Thiotelluration. The Journal of Organic Chemistry. 64(1). 86–92. 77 indexed citations
4.
Ogawa, Akiya, Ryoichi Obayashi, Mikio Doi, Noboru Sonoda, & Toshikazu Hirao. (1998). A Novel Photoinduced Thioselenation of Allenes by Use of a Disulfide−Diselenide Binary System. The Journal of Organic Chemistry. 63(24). 9144–9144. 2 indexed citations
5.
Ogawa, Akiya, Ryoichi Obayashi, Noboru Sonoda, & Toshikazu Hirao. (1998). Diphenyl diselenide-assisted dithiolation of 1,3-dienes with diphenyl disulfide upon irradiation with near-UV light. Tetrahedron Letters. 39(12). 1577–1578. 27 indexed citations
6.
Ogawa, Akiya, Ryoichi Obayashi, Mikio Doi, Noboru Sonoda, & Toshikazu Hirao. (1998). A Novel Photoinduced Thioselenation of Allenes by Use of a Disulfide−Diselenide Binary System. The Journal of Organic Chemistry. 63(13). 4277–4281. 67 indexed citations
7.
Ogawa, Akiya, et al.. (1994). Highly Regio- and Stereoselective Alkylation of vic-Bis(phenyltelluro)alkenes with Organocuprates. The Journal of Organic Chemistry. 59(7). 1600–1601. 47 indexed citations
8.
Ogawa, Akiya, K. YOKOYAMA, Ryoichi Obayashi, et al.. (1993). Photo-Induced Ditelluration of Acetylenes with Diphenyl Ditelluride. Tetrahedron. 49(6). 1177–1188. 52 indexed citations
9.
Ogawa, Akiya, et al.. (1992). ChemInform Abstract: Highly Selective Thioselenation of Olefins Using Disulfide‐Diselenide Mixed System.. ChemInform. 23(25). 1 indexed citations
10.
Ogawa, Akiya, Hiromichi Tanaka, Hiroshi Yokoyama, et al.. (1992). A highly selective thioselenation of olefins using disulfide-diselenide mixed system. The Journal of Organic Chemistry. 57(1). 111–115. 69 indexed citations
11.
Ogawa, Akiya, et al.. (1992). Diphenyl diselenide-promoted radical addition of benzeneselenol to acetylenes. Tetrahedron Letters. 33(10). 1329–1332. 17 indexed citations
12.
Ogawa, Akiya, K. YOKOYAMA, Hiroshi Yokoyama, et al.. (1991). Photo-initiated addition of diphenyl ditelluride to acetylenes. Journal of the Chemical Society Chemical Communications. 1748–1748. 29 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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