1-Ethyl-1H,6H-pyrrolo[2,3-c]azepine-4,8(5H,7H)-dione

Acta Crystallogr Sect E Struct Rep Online. 2009 Jul 18;65(Pt 8):o1928. doi: 10.1107/S1600536809027378.

Abstract

The title compound, C(10)H(12)N(2)O(2), was synthesized by cyclization of 3-(1-ethyl-pyrrole-2-carboxamido)propanoic acid in the presence of polyphospho-ric acid and diphospho-rus pentoxide. In the crystal structure, adjacent mol-ecules are linked by N-H⋯O hydrogen bonds, forming chains extending along the b axis.