(E)-2,2′-[3-(4-Chlorophenyl)prop-2-ene-1,1-diyl]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one)

Abstract

The title compound, C25H29ClO4, adopts a trans conformation about the C=C double bond and the dimethylcyclohexenone rings both show an envelope conformation with the dimethyl-substituted C atom as the flap. In the molecule, the hydroxy and carbonyl groups form two intramolecular O—H...O hydrogen bonds typical for xanthene derivatives. In the crystal, weak C—H...O hydrogen bonds link the molecules into chains running parallel to the a-axis direction.