Succinimido 2-Acetoxybenzoate

The title compound, C13H11NO6, a modified aspirin, was characterized by H-1 NMR, solid-state IR and X-ray crystallographic techniques. The X-ray structure determination reveals that the twist of the acetyl group with respect to the phenyl ring is 12degrees less than that in aspirin. Also, the carboxyl plane is twisted out of the plane of the phenyl ring, probably due to the succinimide substitution. The crystal structure is stabilized by C-H ... O and pi-pi interactions.