(2-Bromophenyl)(4-hydroxy-1,1-dioxo-2H-1,2-benzothiazin-3-yl)methanone

Abstract

In the title mol­ecule, C15H10BrNO4S, the heterocyclic thia­zine ring adopts a half-chair conformation, with the S and N atoms displaced by 0.554 (7) and 0.198 (8) Å, respectively, on opposite sides of the mean plane formed by the remaining ring atoms. The mol­ecular structure is consolidated by intra­molecular O—H⋯O inter­actions and the crystal packing features N—H⋯O and C—H⋯O hydrogen bonds.

(2-Chlorophenyl)(4-hydroxy-1,1-dioxo-2H-1,2-benzothiazin-3-yl)methanone

“…The bond distances and angles in the title compound ( Fig. 1) agree very well with the corresponding bond distances and angles reported for its bromo analogue with which it is isomorphic (Sattar et al, 2012). The heterocyclic thiazine ring adopts a half chair conformation with atoms N1 and S1 displaced by 0.216 7and 0.527 7 Table 1).…”

“…For the biological activity of 1,2-benzothiazine derivatives, see: Ikeda et al (1992); Lombardino et al (1973); Gupta et al (2002); Zia-ur-Rehman et al (2006); Ahmad et al (2010). For bromo analogue of the title compound, see: Sattar et al (2012).…”