Dimethyl 1,8-bis(4-methylphenyl)-11-oxatricyclo[6.2.1.02,7]undeca-2,4,6,9-tetraene-9,10-dicarboxylate

Abstract

The title compound, C28H24O5, consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both exhibit an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The dihedral angle between the 4-methylphenyl rings at the 1,8-positions is 76.4 (1)°. In the crystal, molecules are stacked in columns along the a axis through C—H...O interactions.