title: 1-Ethyl-1H,6H-pyrrolo[2,3-c]azepine-4,8(5H,7H)-dione.
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.
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou, Guangdong 510632, People's Republic of China.
authors.forename: Dong Dong
authors.initials: DD
authors.lastname: Li
authors.forename: Gui Hong
authors.initials: GH
authors.lastname: Tang
authors.forename: Xiang Chao
authors.initials: XC
authors.lastname: Zeng
authors.forename: Xing Yan
authors.initials: XY
authors.lastname: Xu
authors.forename: Gang
authors.initials: G
authors.lastname: Huang