Cp*Ir(iii)-catalyzed C-H/N-H functionalization of sulfoximines for the synthesis of 1,2-benzothiazines at room temperature.

The first Cp*Ir(iii)-catalyzed C-H/N-H bond functionalization of sulfoximines with α-diazocarbonyl compounds has been developed for the synthesis of 1,2-benzothiazines under redox-neutral conditions. The reactions proceed at room temperature with excellent functional group tolerance and high yields without the requirement of any silver additive.