3-[1-(2-Hydroxyanilino)ethylidene]-3H-chromen-2,4-dione

Abstract

The title compound is a new aminocoumarin derivative, C17H13NO4, and was synthesized by the condensation of 2-aminophenol and 3-acetyl-4-hydroxycoumarin. An intramolecular N—H...O hydrogen bond generates an S(6) ring motif. In the crystal, the molecules are linked into chains extending in the [010] direction by O—H...O hydrogen bonds. There is also a π–π stacking interaction between the bicyclic coumarin fragment and the phenol ring [centroid–centroid distance = 3.7510 (14) Å], and these ring systems form between them a dihedral angle of 53.3 (2)°. Intermolecular hydrogen bond C—H...O hydrogen bonding is also observed in the interconnection of the crystal packing.