3,5-Bis(4-methylbenzoyl)-2,6-bis(4-methylphenyl)-4H-pyran-4-one

Abstract

The title compound, C35H28O4, is a tetrasubstituted 4H-pyran-4-one with 2,6-bis(p-tolyl) and 3,5-bis(p-toluyl) substituents. The pyran ring is almost planar; the planes of the toluyl substituents are approximately orthogonal to the pyran mean plane [both dihedral angles are equal to 86.2 (1)degrees], whereas the tolyl planes form with the latter much smaller dihedral angles of 32.5 (1) and 47.2 (1)degrees. The crystal structure features two mtramolecular C-H...O contacts and a C-H...pi(ring) interaction, with an H...Cg distance of 2.70 (3) Angstrom (Cg is the centroid of one of the benzene rings).