Abstract
The title compound, C14H15F3N2O4S·C2H5OH, was prepared by reaction of 4-hydroxybenzaldehyde, ethyl 4,4,4-trifluoro-3-oxobutanoate and thiourea. 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 0.0333 Å, and the dihedral angle between this plane and the benzene ring is 56.76 (5)°. The molecular conformation is stabilized by an intramolecular O—H⋯O hydrogen bond, generating an S(6) ring. The crystal structure is stabilized by intermolecular O—H⋯O, O—H⋯S, N—H⋯O and N—H⋯S hydrogen bonds. The ethyl group of the ester unit is disordered over two positions, with an occupancy ratio of 0.757 (10):0.243 (10).
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