2-(4,6-Dimethyl-1-benzofuran-3-yl)acetic acid

Abstract

In the title compound, C12H12O3, the dihedral angle between the planes of the carboxylic acid group and the benzofuran ring system (r.m.s. deviation = 0.012 Å) is 76.53 (10)°. In the crystal, carboxylic acid inversion dimers linked by pairs of O—H...O hydrogen bonds generate R22(8) loops. C—H...O interactions link the dimers into (101) sheets.

Keywords

• crystal structure
• benzofuran
• hydrogen bonding