title: Ethyl 4-hy-droxy-1-methyl-5-oxo-2-phenyl-pyrrolidine-3-carboxyl-ate 1.25-hydrate.
abstract: The asymmetric unit of the title compound, C(14)H(17)NO(4)·1.25H(2)O, consists of four substituted pyrrolidone mol-ecules (two pairs of enanti-omers) and five water mol-ecules. 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 mol-ecules 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 mol-ecules are connected through O-H⋯O hydrogen bonds, forming a layer parallel to the ab plane. The two-dimensional network is further stabilized by inter-molecular C-H⋯O hydrogen bonds.
authors: Organic Synthesis Labratory, Institute of Science, Universiti Tecknologi MARA, 40450 Shah Alam, Selangor,  Malaysia.
authors: Nurul Shulehaf
authors: NS
authors: Mansor
authors: Mohd Fazli
authors: MF
authors: Mohammat
authors: Zurina
authors: Z
authors: Shaameri
authors: Hamid
authors: H
authors: Khaledi