6-Hydroxy-7,8-dimethylchroman-2-one

Abstract

The title compound, C11H12O3, is essentially planar, with an r.m.s. deviation of 0.179 Å from the mean plane through the 14 non-H atoms in the molecule. The benzene ring and the pyranone mean plane are inclined at 13.12 (6)° to one another and the pyranone ring adopts a flattened chair conformation. In the crystal, O—H...O hydrogen bonds and C—H...O contacts form R12(6) rings and link molecules into chains along b. Additional C—H...O contacts generate inversion dimers, with R22(8) ring motifs, and form sheets parallel to (-102) which are linked by C—H...π interactions.