Ethyl 4-(4-cyanophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Abstract

The asymmetric unit of the title compound, C15H15N3O2S, contains two independent molecules corresponding to the R and S enantiomers. The dihydropyrimidinone rings adopt a flattened boat conformation. One of the ethyl groups is disordered over two orientations with occupancy factors of 0.700 (7) and 0.300 (7). In the crystal structure, molecules are linked by intermolecular N—H...O hydrogen-bonding interactions into one-dimensional chains along the c-axis direction. The chains are further connected by N—H...S hydrogen bonds, forming a three-dimensional network.