M. Harmata et al., THE REACTION OF N-PHENYLSULFONIMIDOYL CHLORIDE WITH TRIMETHYLSILYLETHENE - A NEW ROUTE TO 2-ALKENYLANILINES, Tetrahedron, 54(34), 1998, pp. 9995-10006
N-Phenylsulfonimidoyl chloride reads with trimethylsilylethene in the
presence of aluminum chloride to give two product benzothiazines, one
of which has been desilylated. The silylated benzothiazine can be depr
otonated and alkylated, sometimes with very high diastercocontrol. Upo
n treatment with fluoride, these silylated benzothiazines undergo desi
lylation with concomitant cleavage of the carbon-sulfur bond to give 2
-alkenylsuifinanilides which can be hydrolyzed to the corresponding an
ilines. (C) 1998 Elsevier Science Ltd. All rights reserved.