1-(4-Methoxyphenyl)-4-(4-methylphenyl)-3-phenoxyazetidin-2-one

Abstract

The central β-lactam ring of the title compound, C23H 21NO3, is almost planar (r.m.s. deviation = 0.032Å). The methoxybenzene ring is almost coplanar with the β-lactam ring [dihedral angle = 1.87 (11)°], whereas the tolyl ring is almost normal to it [75.73 (12)°]. The dihedral angle between the β-lactam ring and the O-bonded phenyl ring is 51.95 (12)°. An intramolecular C -H⋯O interaction generates an S(6) ring. The crystal structure features intermolecular C -H⋯O hydrogen bonds, forming layers parallel to (011), and weak C -H⋯π interactions. Two aromatic π-π stacking interactions [centroidcentroid distances = 3.6744 (12) and 3.6799 (11) Å] are also observed.