Derivatives of 1,4-diaryl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[c,d]azulene
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.