T. Akiyama et Y. Ishida, STEREOSELECTIVE SYNTHESIS OF 2,3,5-SUBSTITUTED TETRAHYDROFURANS BY SILICON-DIRECTED CYCLIZATION OF ALLYLSILANES BEARING A HYDROXY MOIETY, Synlett, (10), 1998, pp. 1150
Acid promoted cyclization of bishomoallylic alcohols bearing allylsila
nes proceeded smoothly by way of beta-silyl carbocation intermediate t
o furnish tetrahydrofurans highly stereoselectively.