title: Ethyl 1-benzyl-4-hydr-oxy-2-methyl-5-oxopyrrolidine-3-carboxyl-ate.
abstract: In the title oxopyrrolidine, C(15)H(19)NO(4), the five-membered pyrrolidine ring is in a twist conformation and its mean plane makes an angle of 89.2 (3)° with the phenyl ring. In the crystal, mol-ecules pack as dimers via strong O-H⋯O [R(2) (2)(10)] inter-actions cross-linked by weaker C-H⋯O and C-H⋯π inter-actions. Full synthetic and spectroscopic details are given for the title compound and related dicarboxyl-ates.
authors.affiliation: Industrial Research Limited, PO Box 31-310, Lower Hutt, New Zealand.
authors.forename: Graeme J
authors.initials: GJ
authors.lastname: Gainsford
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Mason