Ethyl 4-hydroxy-1-methyl-5-oxo-2-phenylpyrrolidine-3-carboxylate 1.25-hydrate

Abstract

The asymmetric unit of the title compound, C14H17NO4·1.25H2O, consists of four substituted pyrrolidone molecules (two pairs of enantiomers) and five water molecules. The five-membered rings each have an envelope conformation, with the C atom bonded to the ester group as the flap. The mean planes of the five-membered rings of the four pyrrolidone molecules make dihedral angles of 60.87 (5), 64.45 (5), 62.03 (5) and 65.79 (5)° with respect to the phenyl rings. In the crystal, the pyrrolidone and water molecules are connected through O—H...O hydrogen bonds, forming a layer parallel to the ab plane. The two-dimensional network is further stabilized by intermolecular C—H...O hydrogen bonds.