5-Acetyl-4-(2-chloro-phen-yl)-6-methyl-3,4-dihydro-pyrimidin-2(1H)-one

Abstract

In the title mol-ecule, C(13)H(13)ClN(2)O(2), the heterocyclic ring adopts a flattened boat conformation with the plane through the four coplanar atoms making a dihedral angle of 89.16 (5)° with the benzene ring, which adopts an axial orientation. The carbonyl, acetyl and methyl groups each have an equatorial orientation. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds lead to a tape motif. The H atoms of the methyl group at position 6 are disordered over two positions of opposite orientation.

Fig. 1.

The molecular structure of (I), showing the atom-numbering scheme and displacement ellipsoids drawn at the 30% probability level. H atoms are shown as small spheres of arbitrary radius.

Fig. 2.

The crystal packing of (I), viewed down the c axis. Dashed lines indicate intermolecular contacts. H atoms not involved in hydrogen bonding have been omitted.