[GRAPHICS]
Beta-Elimination of O-acetyl 1-chloro-1-trimethylsilylalkan-2-ols 1 was ach
ieved by using samarium diiodide as a metaling reagent and afforded the cor
responding (Z)-vinylsilanes with high stereoselectivity. The starting compo
unds 1 were easily prepared by treatment of different aldehydes with (chlor
olithiomethyl)trimethylsilane and further acetylation.