Preparation of Tetraphenylazulenequinodimethanes from the Reactions of Azulenequinones with Diphenylketene and the 1H NMR and UV-vis Spectral Studies in Acidic Media

• Akira Mori

  Institute of Advanced Material Study, 86, Kyushu UniversityKesuga-koen, Kasuga, Fukuoka

• Yong Zhe Yan

  Graduate School of Engineering, Sciences, 39, Kyushu UniversityKasuga-koen, Kasuga, Fukuoka

• Hitoshi Takeshita

  Tohwa Institute for Science, Tohwa UniversityChikushi-ga-oka, Minami-ku, Fukuoka

• the late Tetsuo Nozoe

  Tokyo Research Laboratories, Kao CorporationBunka, Sumida-ku, Tokyo

Abstract

3-Bromo-1,5-azulenequinone and 3-bromo-1,7-azulenequinone reacted with diphenylketene to give the corresponding tetraphenylazulenequinodimethane, which has both diphenylfulvene and diphenylheptafulvene structures. The protonation occurred at the diphenylmethylene group on the seven-membered ring to form a cycloheptatrienylium ion.

Journal

• Chemistry Letters

  Chemistry Letters 26 (8), 689-690, 1997-08-01

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360002219109385344
• NII Article ID: 10002613357
• NII Book ID: AA00603318
• DOI: 10.1246/cl.1997.689
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/26/8/689/56075251/cl.1997.689.pdf
• Data Source:
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  • CiNii Articles