Výsledky vyhledávání - "Chiaki Sakon"

Synthesis and Properties of Methano-Bridged Bisdehydro[17]-, -[19]-, -[21]annulenones and the Related Compounds

Autor: Seiken Kiyoto, Chiaki Sakon, Shiro Kondo, Gaku Yamamoto, Kaori Asano, Naoki Hiraiwa, Hiroyuki Higuchi, Juro Ojima

Publikováno v: Bulletin of the Chemical Society of Japan. 68:3519-3538

14-Methyl-10,12-bisdehydro-4,9-methano-1H-[17]annulen-1-one, 14-methyl-10,12-bisdehydro-4,9-methano-1H-[19]annulen-1-one, and 16-methyl-12,14-bisdehydro-6,11-methano-1H-[21]annulen-1-one, as well as their methylated and benzannelated derivatives, wer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7caad67752058df810baf82120ee2e23
https://doi.org/10.1246/bcsj.68.3519

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Synthesis and Properties of a Bismethano-bridged Bisdehydro[21]annulenone. Conformation in Solution and in the Crystalline State

Autor: Chiaki Sakon, Hiroyuki Higuchi, Kaori Asano, Naoki Hiraiwa, Juro Ojima, Katsuya Inoue, Seiken Kiyoto, Gaku Yamamoto

Publikováno v: Chemistry Letters. 23:2291-2294

A bismethano-bridged bisdehydro[21]annulenone, tricyclo[15.4.1.16,11]tricosa-6,8,10,12,15,17,19,21-octaene-2,4-diyn-14-one, was synthesized. X-ray crystallography reveals the syn orientation of the two methano bridges. Two conformers are present in s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ec98adfce8e64172b123397389253de
https://doi.org/10.1246/cl.1994.2291

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Unusual formation of tricyclic annulenediones: diatropic cationic 10π-electron species in D2SO4

Autor: Katsuya Inoue, Masahiko Iyoda, Jūro Ojima, Chiaki Sakon, Hiroyuki Higuchi, Gaku Yamamoto, Kaori Asano

Publikováno v: J. Chem. Soc., Perkin Trans. 1. :2915-2920

Intramolecular oxidative coupling of 1-(3-oxopent-1-en-4-ynyl)-6-(1-oxoprop-2-ynyl)cyclohepta-1,3,5-triene 2 under the Glaser conditions unexpectedly afforded two tricyclic annulenediones. The unusual structures were determined by X-ray crystallograp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45471e796e6bebbb46330663a013254a
https://doi.org/10.1039/p19940002915

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ChemInform Abstract: Synthesis and Properties of a Bismethano-Bridged Bisdehydro(21) annulenone. Conformation in Solution and in the Crystalline State

Autor: Chiaki Sakon, Naoki Hiraiwa, Seiken Kiyoto, Kaori Asano, Katsuya Inoue, Gaku Yamamoto, Hiroyuki Higuchi, Juro Ojima

Publikováno v: ChemInform. 26

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58450dc2cbc1ebec3ec958e0df83e96b
https://doi.org/10.1002/chin.199521098

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ChemInform Abstract: Synthesis and Properties of Dimethano-Bridged Tetradehydro(21)-, -(23)- and -(25)annulenones

Autor: Shiro Kondo, Naoki Hiraiwa, Chiaki Sakon, Gaku Yamamoto, Juro Ojima, Hiroyuki Higuchi, Kaori Asano, Katsuya Inoue

Publikováno v: ChemInform. 27

Syntheses of 7,8,9,10-tetradehydro-1,6:11,16-dimethano[21]annulen-19-one 11, 7,8,9,10-tetradehydro-18-methyl-1,6:11,16-dimethano[21]annulen-19-one 12, 7,8,9,10-tetradehydro-1,6:11,16-dimethano[23]annulen-19-one 13 and 7,8,9,10-tetradehydro-1,6:11,16-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7daca6dd8d5a9a964a926c980b27dec
https://doi.org/10.1002/chin.199613101

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ChemInform Abstract: Synthesis and Properties of Methano-Bridged Bisdehydro(17)-, -(19)-, -( 21)annulenones and the Related Compounds

Autor: Shiro Kondo, Chiaki Sakon, Seiken Kiyoto, Juro Ojima, Gaku Yamamoto, Hiroyuki Higuchi, Naoki Hiraiwa, Kaori Asano

Publikováno v: ChemInform. 27

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37f1c07ae767df46db3b45e2c77eb6fc
https://doi.org/10.1002/chin.199616114

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