Abstract

Derivatives of the previously unknown heterocyclic system 2,2a,8a-triazacyclopenta[c,d] azulene were synthesized by condensation of 3-aryl-4,5-pentamethylene-1,2,4-triazoles or 2-(β-aroylhydrazin)-l-aza-Δ-cycloheptene with α-halogeno ketones, followed by cyclization of the intermediate products in alkaline media.

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