Acta Cryst. (2012). E68, o3092-o3093
[ doi:10.1107/S1600536812041013 ]
Abstract: In the title compound, C17H21F3N2O6S, the hexahydropyrimidine ring adopts a half-chair conformation: the mean plane formed by the ring atoms excluding the C atom bonded to the ethoxycarbonyl group has an r.m.s. deviation of 0.0427 Å and forms a dihedral angle of 66.41 (5)° with the benzene ring. The molecular conformation is stabilized by an intramolecular hydroxyl O-HOcarboxyl hydrogen bond, generating an S(6) ring. In the crystal, pairs of N-HS and N-HO hydrogen bonds give rise to the formation of two-dimensional networks lying parallel to the ab plane, which incorporate graph-set motifs R22(8) and R22(16), respectively.
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