Kahei Takase

2.0k total citations
157 papers, 1.5k citations indexed

About

Kahei Takase is a scholar working on Organic Chemistry, Materials Chemistry and Pharmacology. According to data from OpenAlex, Kahei Takase has authored 157 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 119 papers in Organic Chemistry, 41 papers in Materials Chemistry and 33 papers in Pharmacology. Recurrent topics in Kahei Takase's work include Synthesis of Organic Compounds (33 papers), Synthesis and Properties of Aromatic Compounds (32 papers) and Organic Chemistry Cycloaddition Reactions (30 papers). Kahei Takase is often cited by papers focused on Synthesis of Organic Compounds (33 papers), Synthesis and Properties of Aromatic Compounds (32 papers) and Organic Chemistry Cycloaddition Reactions (30 papers). Kahei Takase collaborates with scholars based in Japan and Germany. Kahei Takase's co-authors include Masafumi Yasunami, Tetsuo Nozoe, Masayoshi Ando, Kazuko Takahashi, Masayoshi Ando, Takashi Yanagisawa, Masao Tada, Toyonobu Asao, Atsushi Akahane and Yoshikazu Yanagi and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Chemical Physics Letters.

In The Last Decade

Kahei Takase

152 papers receiving 1.4k citations

Peers

Countries citing papers authored by Kahei Takase

Since Specialization

Citations

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

Fields of papers citing papers by Kahei Takase

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kahei Takase

This figure shows the co-authorship network connecting the top 25 collaborators of Kahei Takase. A scholar is included among the top collaborators of Kahei Takase 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 Kahei Takase. Kahei Takase 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	Studies on anti-ulcer agents. II. Synthesis and anti-ulcer activities of 6-isopropylazulene-1-sodium sulfonate derivatives. 1990 ·Chemical and Pharmaceutical Bulletin ·Takashi Yanagisawa, Kazuhiro Kosakai, Takeshi Tomiyama, (unknown), Kahei Takase	53
2	Synthesis and Reactions of 2-Arylhydrazinotropones. II. Synthesis of 5-Aryltropolones and B-Ring-Open Colchicine Analogues via Benzidine Type Rearrangement of 2-(2-Arylhydrazino)troponesa 1989 ·Bulletin of the Chemical Society of Japan ·Tetsuo Nozoe, Kahei Takase, Masafumi Yasunami, Masayoshi Ando, Hiroaki Saito, Kimiaki Imafuku, (unknown), (unknown), Yasutomo Goto, Tadashi Hanaya, Yasushi Hara, Hiroshi Yamamoto	7
3	Electrophilic substitution in annulenes. Part 4. Transmission of substituent effects in 1,6-methano[10]annulene, determined via protiodesilylation: evidence for substantial C(1)–C(6) transannular orbital interaction 1988 ·Journal of the Chemical Society Perkin Transactions 2 ·Tsuyoshi Suzuki, Kahei Takase, Kazuko Takahashi, Andrew P. Laws, Roger Taylor	1
4	Tropolone derivatives as synthetic intermediates. 1. A novel synthetic method of the octahydro-2H-cyclohepta[b]furan-2-one derivatives 1987 ·The Journal of Organic Chemistry ·Masayoshi Ando, Naoki Kataoka, Masafumi Yasunami, Kahei Takase, (unknown), Yoshikazu Yanagi	16
5	5-(2,3-diphenylcyclopropenylidene)-2(5H)-thiophenone characterization of a thiophene-inserted type compound of diphenylcyclopropenone 1983 ·Tetrahedron Letters ·Kazuko Takahashi, (unknown), Kahei Takase, (unknown)	4
6	Magnetic circular dichroism spectra of 11-(methoxycarbonyl)-cyclohept[a]azulenylium tetrafluoroborate 1982 ·Spectrochimica Acta Part A Molecular Spectroscopy ·(unknown), Masafumi Ata, (unknown), Masafumi Yasunami, (unknown), Kahei Takase	1
7	THE SYNTHESIS OF 5H-CYCLOHEPT[a]AZULEN-5-ONE AND ITS NOVEL REACTION WITH A SULFUR YLIDE: THE FORMATION OF A NEW HETEROCYCLIC SYSTEM 1982 ·Chemistry Letters ·Masafumi Yasunami, (unknown), Kahei Takase	4
8	Syntheses of arborescin, 1,10-epiarborescin, and (11S)-guaia-3,10(14)-dieno-13,6.alpha.-lactone, the key intermediate in Greene and Crabbe's estafiatin synthesis, and the stereochemical assignment of arborescin 1982 ·The Journal of Organic Chemistry ·Masayoshi Ando, Atsushi Akahane, (unknown), Kahei Takase	32
9	1981 ·Journal of Synthetic Organic Chemistry Japan ·Kahei Takase, Masafumi Yasunami	35
10	A Facile Method for the Synthesis of Azuleno[2,1-b]furan and Azuleno-[2,1-b]pyrrole Derivatives and Their Some Properties 1981 ·Heterocycles ·(unknown), (unknown), Kahei Takase	26
11	THE FACILE SYNTHESIS OF 2,6-DIAMINO-l,3,5,7-TETRAZACYCOPENT[f]AZULENE 1980 ·Chemistry Letters ·Masafumi Yasunami, (unknown), Kahei Takase	1
12	exo-STEREOSELECTIVITY IN ELECTROPHILIC REACTION TO 9-METHOXYCARBONYLBICYCLO[4.3.1]DECATETRAENTL ANION 1979 ·Chemistry Letters ·Kazuko Takahashi, T. Kagawa, Kahei Takase	3
13	Studies on the Syntheses of Sesquiterpene Lactones. III. Improved Synthesis of Vulgarin 1979 ·Bulletin of the Chemical Society of Japan ·Masayoshi Ando, (unknown), Kahei Takase	7
14	STERIC CROWDING IN A HIGHLY POLARIZED [5.6.7]QUINARENE 1978 ·Chemistry Letters ·Kazuko Takahashi, (unknown), Kahei Takase	1
15	The reaction of 2-chloroazulene derivatives with alkali metal acetylides in liq. ammonia 1974 ·Tetrahedron Letters ·(unknown), (unknown), Kahei Takase	7
16	The syntheses of indeno[2,1-a]azulene and indeno[1,2-a]azulene 1974 ·Tetrahedron Letters ·Alice P. Chen, Masafumi Yasunami, Kahei Takase	11
17	Some Oxidation and Reduction Products of 4-Acetyltropolone and Its Methyl Ethers 1971 ·Bulletin of the Chemical Society of Japan ·Tetsuo Nozoe, Kahei Takase, (unknown), Masafumi Yasunami	2
18	The Bromination of 2-Methoxytropone and Its Bromo Derivatives 1971 ·Bulletin of the Chemical Society of Japan ·Tetsuo Nozoe, Kahei Takase, Masafumi Yasunami	2
19	The Chemistry of Seven-membered Heterocyclic Compounds. 1968 ·Journal of Synthetic Organic Chemistry Japan ·Kahei Takase	1
20	1965 ·Nippon kagaku zassi ·(unknown), (unknown), Kahei Takase, (unknown), Tomoo Nakazawa	13

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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