The conversion of benzothiazines to 2-alkenyl anilines
作者:Michael Harmata、Barry F. Herron
DOI:10.1016/s0040-4020(01)80999-6
日期:1991.10
with excess potassium dimsylate in DMSO benzothiazines 1a-1j undergo an elimination of the sulfoximine functional group to give 2-alkenylsulfinanilides nonstereoselectively in good to excellent yield. These are easily converted to the corresponding anilines with ethanolic potassium hydroxide. Mechanistic studies indicate that the elimination reaction takes place via an Elcb mechanism.