Synthesis and structure of 2-phenylanthra[9,1-bc]pyrrol-6-one

Reduction of anti-1-benzoylanthraquinone oxime gave 2-phenylanthra[9,1-bc]pyrrol-6-one whose structure was determined by X-ray analysis. The molecule of 2-phenylanthra[9,1-bc]pyrrol-6-one is almost planar, and its crystalline structure is characterized by head-to-tail chains formed via intermolecular hydrogen bonds N-H ... O.