8-Phenyl-3,4,6,7,8,8a-hexa­hydro-1H-pyrrolo­[2,1-c][1,4]oxazin-6-one

In the title compound, C13H15NO2, the hexa­hydro­pyrrolo­[2,1-c][1,4]oxazine fragment is disordered over two conformations (A and B) in a 0.656 (5):0.344 (5) ratio. The five-membered ring is similarly disordered and adopts an envelope conformation in A, while in B this ring is nearly planar [maximum deviation = 0.088 (1) Å]. The six-membered rings in both A and B exhibit chair conformations. In the crystal, weak inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into ribbons propagating in [010].Financial support from University of Łódź (grant No. 505/721/R to MM) is gratefully acknowledged. The authors thank Dr Klaus Harms from Philipps University in Marburg (Germany) for collecting the data