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Communication | Regular issue | Vol 36, No. 10, 1993, pp.2247-2254
Published online, 1st January, 1970
DOI: 10.3987/COM-93-6471
A New Route to 1-Azaazulene Ring System by the Reaction of 1-(Diphenylphosphinyl)azaallyl Anions with Tropone Derivatives

Koji Ito and Makoto Nitta*

*Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan


The reaction of 1-(diphenylphosphinyl)azaallyl anions, derived from the corresponding imines, with tropones underwent enamine-type alkylation and mainly followed by aza-Wittig reaction to give 1-azaazulene derivatives, in addition to a trace amount of 4H-4-oxocyclohepta[b]pyrroles.