Date Published: May 01, 2009
Publisher: International Union of Crystallography
Author(s): Zhu-Bo Li, Hao Yang, Yong-Sheng Xie, Chen-Guang Zhao.
In the title compound, C15H12ClNO2, the two benzene rings are nearly perpendicular to each other [dihedral angle = 89.99 (13)°]. The O atom of the six-membered heterocyclic ring is disordered over two sites in a ratio of 0.46 (4):0.54 (4) and is displaced from the mean plane formed by other five atoms, resulting an envelope conformation of the six-membered hetercycle ring.
For the biological activity of benzo[b][1,4]oxazin-3(4H)-ones, see: Frechette & Weidner-Wells (1997 ▶); Maag et al. (2004 ▶). For the synthesis of benzo[b][1,4]oxazin-3(4H)-ones, see: Zuo et al. (2008 ▶). For a related structure, see: Cao et al. (2004 ▶).