(E)-Ethyl 2-cyano-3-[5-nitro-2-(pyrrolidin-1-yl)phenyl]acrylate

Abstract

The title compound, C16H17N3O4, was prepared by the reaction of 5-nitro-2-(pyrrolidin-1-yl)benzaldehyde and ethyl cyanoacetate. The molecular structure adopts an E conformation with respect to the C=C double bond. The five-membered ring has a half-chair conformation, with puckering parameters Q(2)= 0.399 (2) Å and ϕ = 93.1 (3)°. In the crystal, inversion dimers , linked by pairs of C—H...O interactions, are further connected through C—H...N hydrogen bonds. Weak slipped π-π interactions occur between symmetry-related benzene rings [centroid–centroid distance = 3.785 (1)Å].