Research Article: (3aR*,5R*)-5-(4-Chloro­phen­yl)-1,2,3,3a-tetra­hydro­benzo[e]pyrrolo­[2,1-b][1,3]ox­azepin-10(5H)-one

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Yun-Zhou Jin, Rong-Hua Zhang, Da-Xu Fu, Yao-Kang Lv.


The title compound, C18H16ClNO2, is the main product of a photoreaction. The two benzene rings make a dihedral angle of 86.40 (2)° with each other. The 1,3-oxazepine C atom to which the 4-chloro­phenyl group is attached and the C atom of the 4-chloro­phenyl group attached to the 1,3-oxazepine ring are chiral C atoms, but the crystal is a racemate in which the enanti­omers are linked by a pair of weak inter­molecular C—H⋯O hydrogen bond, forming an inversion dimer.

Partial Text

For general background to asymmetric photochemical reactions, see: Gratzel (2001 ▶); Korzeniewski & Zoladz (2001 ▶); Aubert et al. (2000 ▶). For photo-induced cyclizations, see Griesbeck et al. (2002 ▶); Henz et al. (1995 ▶). For related structures, see: Griesbeck et al. (1997 ▶, 1999 ▶); Basarić et al. (2008 ▶).




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