2-(3-Oxo-1,3-Dihydroisobenzofuran-1-Ylamino)Benzoicacid

Abstract

In the mol-ecule of the title compound, C15H11NO4, the essentially planar phthalide group is oriented at a dihedral angle of 56.78 (5)° with respect to the substituted aromatic ring. An intra-molecular N - H⋯O hydrogen bond results in the formation of a non-planar six-membered ring, which adopts a nearly flattened-boat conformation. In the crystal structure, inter-molecular C - H⋯O, O - H⋯O and N - H⋯O hydrogen bonds link the mol-ecules, generating centrosymmetric R 2 2(8) and R 2 2(11) ring motifs and forming a three-dimensional network.