T. IWAKUMA

572 total citations
36 papers, 405 citations indexed

About

T. IWAKUMA is a scholar working on Organic Chemistry, Molecular Biology and Cancer Research. According to data from OpenAlex, T. IWAKUMA has authored 36 papers receiving a total of 405 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Organic Chemistry, 9 papers in Molecular Biology and 6 papers in Cancer Research. Recurrent topics in T. IWAKUMA's work include Chemical synthesis and alkaloids (9 papers), Chemical Synthesis and Analysis (8 papers) and Asymmetric Synthesis and Catalysis (8 papers). T. IWAKUMA is often cited by papers focused on Chemical synthesis and alkaloids (9 papers), Chemical Synthesis and Analysis (8 papers) and Asymmetric Synthesis and Catalysis (8 papers). T. IWAKUMA collaborates with scholars based in Japan and United States. T. IWAKUMA's co-authors include Koichiro Yamada, Mikio Takeda, Nobuo Itoh, Osamu Yonemitsu, Ken‐ichi Hirao, Tadasu Tanaka, Bernhard Witkop, Hideo Nakai, Mikio Taniguchi and Isabella L. Karle and has published in prestigious journals such as Journal of the American Chemical Society, Tetrahedron Letters and Synthesis.

In The Last Decade

T. IWAKUMA

34 papers receiving 374 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
T. IWAKUMA Japan 11 313 141 93 49 36 36 405
Marie Jacqueline Luche France 10 364 1.2× 141 1.0× 64 0.7× 45 0.9× 27 0.8× 10 476
Christopher S. Shiner United States 13 391 1.2× 135 1.0× 52 0.6× 46 0.9× 26 0.7× 17 522
Erwin F. Schoenewaldt United States 12 257 0.8× 253 1.8× 55 0.6× 56 1.1× 37 1.0× 16 464
J. V. Nelson 5 709 2.3× 184 1.3× 115 1.2× 68 1.4× 41 1.1× 6 789
Masanao Terashima Japan 15 700 2.2× 156 1.1× 68 0.7× 27 0.6× 34 0.9× 68 801
Jochen Wild Germany 10 382 1.2× 294 2.1× 80 0.9× 53 1.1× 49 1.4× 14 523
Florence Charbonnier France 11 354 1.1× 98 0.7× 52 0.6× 55 1.1× 33 0.9× 13 426
G.R. Clark United States 8 330 1.1× 97 0.7× 93 1.0× 32 0.7× 18 0.5× 17 418
Conrad J. Kowalski United Kingdom 17 675 2.2× 165 1.2× 98 1.1× 36 0.7× 53 1.5× 24 784
J. Chandrasekharan United States 12 446 1.4× 154 1.1× 198 2.1× 96 2.0× 29 0.8× 21 557

Countries citing papers authored by T. IWAKUMA

Since Specialization
Citations

This map shows the geographic impact of T. IWAKUMA'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 T. IWAKUMA with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. IWAKUMA more than expected).

Fields of papers citing papers by T. IWAKUMA

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of T. IWAKUMA

This figure shows the co-authorship network connecting the top 25 collaborators of T. IWAKUMA. A scholar is included among the top collaborators of T. IWAKUMA 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 T. IWAKUMA. T. IWAKUMA 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
1.
2.
Yokomatsu, Tsutomu, et al.. (2010). N-Benzyl-Protection of Amino Acid Derivatives by Reductive Alkylation with α-Picoline-Borane. Synthesis. 2010(10). 1673–1677. 1 indexed citations
3.
Yokomatsu, Tsutomu, et al.. (2009). One-Pot Synthesis of Alkoxyamine Derivatives by Reductive Alkoxyamination with a 2-Picoline-Borane Complex. Heterocycles. 78(2). 463–463. 6 indexed citations
4.
Sato, Hiroki, et al.. (1999). Synthesis and thromboxane A2 antagonistic activity of indane derivatives. Bioorganic & Medicinal Chemistry Letters. 9(3). 401–406. 13 indexed citations
5.
Kawaguchi, Takayuki, Kunio SAITO, Kenji Matsuki, T. IWAKUMA, & Mikio Takeda. (1993). Asymmetric Reduction of Aromatic Ketones. I. Enantioselective Synthesis of Denopamine.. Chemical and Pharmaceutical Bulletin. 41(4). 639–642. 8 indexed citations
6.
IWAKUMA, T., Koichiro Yamada, & Mikio Takeda. (1983). . Journal of Synthetic Organic Chemistry Japan. 41(5). 451–456.
7.
Yamada, Koichiro, et al.. (1982). Studies on 1,2,3,4-tetrahydroisoquinolines. V. A convenient synthesis of (.+-.)-5,7-dihydroxy-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline (racemic TA-073).. Chemical and Pharmaceutical Bulletin. 30(9). 3197–3201. 7 indexed citations
8.
IWAKUMA, T., Koichiro Yamada, Nobuo Itoh, & Shigehiko Sugasawa. (1981). A New One-pot Synthesis of 1-Arylmethyl-1,2,3,4-tetrahydroisoquinoline Derivatives from Isoquinolinium Salts. Heterocycles. 15(2). 1115–1115.
9.
Yamada, Koichiro, Mikio Takeda, Nobuo Itoh, et al.. (1981). Studies on 1,2,3,4-tetrahydroisoquinolines. III. Syntheses and .BETA.-adrenoceptor activities of methyl derivatives of trimetoquinol.. Chemical and Pharmaceutical Bulletin. 29(10). 2816–2824. 1 indexed citations
10.
Hirao, Ken‐ichi, et al.. (1980). Hydrogenation of cyclobutanes in strained cage compounds. Synthesis of ditwistane and bisnorditwistane (ditwistbrendane). Journal of the Chemical Society Perkin Transactions 1. 163–163. 7 indexed citations
11.
IWAKUMA, T., et al.. (1978). A convenient method for the reduction of oxime ethers to the corresponding amines.. Chemical and Pharmaceutical Bulletin. 26(9). 2897–2898. 10 indexed citations
12.
Yamada, Koichiro, et al.. (1978). ‘One-pot’ conversion of mannich bases via quaternary ammonium salts into the corresponding methyl compounds with sodium cyanoborohydride in hexamethylphosphoramide. Journal of the Chemical Society Chemical Communications. 0(24). 1089–1090. 8 indexed citations
13.
IWAKUMA, T., et al.. (1977). . Journal of Synthetic Organic Chemistry Japan. 35(4). 300–303. 3 indexed citations
14.
IWAKUMA, T., et al.. (1976). Sodium acyloxyborohydride as new reducing agents. II. Reduction of nitriles to the corresponding amines. Tetrahedron Letters. 17(33). 2875–2876. 37 indexed citations
15.
Hirao, Ken‐ichi, Mikio Taniguchi, T. IWAKUMA, et al.. (1975). Stereospecific acid-catalyzed rearrangement of 1,6-dimethylpentacyclo[6.4.0.02,7.03,10.06,9]dodecane-5,12-dione to a bisnordiadamantane. Journal of the American Chemical Society. 97(11). 3249–3250. 8 indexed citations
16.
17.
Hirao, Ken‐ichi, et al.. (1974). Synthesis of ditwistane and bisnorditwistane: novel ring systems. Journal of the Chemical Society Chemical Communications. 691–691. 16 indexed citations
18.
IWAKUMA, T., Osamu Yonemitsu, Nobuaki Kanamaru, Katsumi Kimura, & Bernhard Witkop. (1973). Transient Cyclohexadienones by Novel Reversal Reactions from Cage Photodimers Derived from N‐Chloroacetyltyramines. Angewandte Chemie International Edition in English. 12(1). 72–73. 4 indexed citations
19.
IWAKUMA, T., Osamu Yonemitsu, Nobuaki Kanamaru, Katsumi Kimura, & Bernhard Witkop. (1973). Nachweis von Cyclohexadienonen durch neuartige Spaltungsreaktionen von Photodimeren substituierter N‐Chloracetyltyramine. Angewandte Chemie. 85(2). 85–86. 2 indexed citations
20.
Tanaka, Tadasu, et al.. (1972). Synthetic studies on pyrroloquinolines. II. Studies on the syntheses and chemical properties of 1H‐pyrrolo[2,3‐b] quinolmes. Journal of Heterocyclic Chemistry. 9(6). 1355–1358. 6 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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