(6R,7aS)-1,3,5,6,7,7a-Hexa­hydro-3-(2-hydroxy­phenyl)-1,1-di­phenyl­pyrrolo­[1,2-c][1,3]­oxazol-6-ol

The molecule of the title compound, C₂₄H₂₃NO₃, consists of five rings, of which the pyrrole ring and oxazole ring are not planar. The compound was designed as a catalyst of the asymmetric Baylis–Hillman reaction, but it only has poor catalysis activity. According to the crystal structure analysis, this might be caused by steric hindrance due to the intramolecular O—H...N hydrogen bond. In the crystal structure, the mol­ecules are connected by O—H...O and C—H...O hydrogen bonds, forming chains along [010]. The chains further interact through C—H...O hydrogen bonds, stacking along [100]. In the third direction [001], there is only weak interaction, which explains the crystal habit of a thin plate.