Ethyl 6-methyl-3-(2-methylprop-1-enyl)-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Abstract

In the molecule of the title compound, C18H22N2O3, the dihydropyrimidinone ring adopts an envelope conformation. The dihedral angle between the phenyl ring and the mean plane through the enamine fragment is 86.04 (7)°. The molecular conformation is stabilized by an intramolecular C—H...O hydrogen bond. In the crystal, intermolecular N—H...O hydrogen bonds link pairs of molecules into centrosymmetric dimers.