title: Crystal structure of ethyl 3-(4-chloro-phen-yl)-5-[(E)-2-(di-methyl-amino)-ethen-yl]-1,2-oxazole-4-carboxyl-ate.
abstract: In the title compound, C16H17ClN2O3, two mol-ecules, A and B, with different conformations, comprise the asymmetric unit. In mol-ecule A, the C=O group of the ester points away from the benzene ring [C-C-C=O = -170.8 (3)°], whereas in mol-ecule B, it points back towards the benzene ring [C-C-C=O = 17.9 (4)°]. The dihedral angles betweeen the oxazole and benzene rings also differ somewhat [46.26 (13) for mol-ecule A and 41.59 (13) for mol-ecule B]. Each mol-ecule features an intra-molecular C-H⋯O inter-action, which closes an S(6) ring. In the crystal, the B mol-ecules are linked into [001] C(12) chains by weak C-H⋯Cl inter-actions.
authors: Ural Federal University, Mira 19 Ekaterinburg 620002, Russian Federation.
authors: Ilya
authors: I
authors: Efimov
authors: I. Postovsky Institute of Organic Synthesis, Kovalevskoy 22 Ekaterinburg 620090, Russian Federation.
authors: Pavel
authors: P
authors: Slepukhin
authors: Ural Federal University, Mira 19 Ekaterinburg 620002, Russian Federation.
authors: Vasiliy
authors: V
authors: Bakulev
keywords: crystal structure; enamine; isoxazole