title: (Z)-Ethyl 2,4-diphenyl-3-(propyl-amino)-but-2-enoate.
abstract: The title compound, C(21)H(25)NO(2), adopts a Z conformation about the C=C double bond. The mol-ecular structure is stabilized by an intra-molecular N-H⋯O hydrogen bond and the dihedral angle between the aromatic ring planes is 76.04 (12)°. The atoms of the ethyl substituent are disordered over two sets of sites in a 0.60 (2):0.40 (2) ratio.
authors.affiliation: Department of Pharmaceuticals, Tianjin Medical College, Tianjin 300222, People's Republic of China.
authors.forename: Huimin
authors.initials: H
authors.lastname: Jin
authors.forename: Peifan
authors.initials: P
authors.lastname: Li
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Cheng