Heterocyclic systems. II. Synthesis of 4H,6H‐pyrrolo[1,2‐a][4,1]benzoxazepine

The reduction of 1‐(2‐methoxycarbonylphenyl)pyrrole‐2‐carboxaldehyde by lithium aluminum hydride led to 1‐(2‐hydroxymethylphenyl)‐2‐hydroxymethylpyrrole, which was in turn transformed into 4H,6H‐pyrrolo‐[1,2‐a][4,1]benzoxazepine through intramolecular dehydration. The reductive action of sodium borohydride, instead, allowed the preparation of 6‐oxo‐4H‐pyrrolo[1,2‐a][4,1]benzoxazepine.