[GRAPHICS]
Lewis acid-catalyzed reaction of allyl and benzyl trichloroacetimidates wit
h alpha-silyl alcohols was found to be a general method for the synthesis o
f alpha-alkoxysllanes. Upon exposure to CsF, these alpha-alkoxysilanes coul
d be made to undergo [2,3]-Wittig rearrangement with an efficiency similar
to that realized by the analogous but inherently more toxic alpha-alkoxysta
nnanes.