2-benzazepines. 10 [1]. New d-fused 2-benzazepines

Pyrano3,2-d]2]benzazepines were synthesized by reaction of the beta-dimethylamino unsaturated ketone 1 with malonic ester or the anion of t-butyl acetate. Conversion of the pyrano derivative to the pyrido3,2-d]-2]benzazepine was achieved in low yield. A pyrrolo3,2-d]2]benzazepine was prepared via an oxazepino-6,7-d]2]benzazepine which was obtained by reaction of 1 with the anion of ethyl isocyanoacetate.