1-(3-Amino-1H-inden-2-yl)ethanone

The title compound, C11H11NO, was synthesized by the reaction of 2-(bromomethyl)benzonitrile and acetylacetone in the presence of KOH. In the crystal packing, molecules are linked by intermolecular N—H...O hydrogen bonds into chains running parallel to the b axis. Centrosymmetrically-related chains interact further through weak C—H...π interactions.