Synthesis of a Polycyclic. PI.-Conjugated System Containing an Azulene Unit by the Flash Vacuum Pyrolytic Method. II. Synthesis and Paratropic Properties of 3H- …

Y Kitamori, M Yasunami, T Hioki, I Kikuchi…

Index: Kitamori, Yoichiro; Yasunami, Masafumi; Hioki, Takanori; Kikuchi, Ikue; Takase, Kahei Bulletin of the Chemical Society of Japan, 1992 , vol. 65, # 8 p. 2131 - 2140

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Citation Number: 3

Abstract

3H-Cyclopent [a] azulen-3-one and two methyl derivalives, which have a new tricyclic π- conjugated system, were synthesized starting from 9-methoxycarbonyl-1, 2-dihydro-3H- cyclopent [a] azulen-3-one by the application of flash vacuum pyrolysis in the final step. All proton signals of these compounds were observed at higher fields than those of the referenced 1, 2-dihydro compound, but there are no significant differences between the ...