Abstract
Tin (IV) chloride mediated [3+2] cycloadditions of allylsilanes with optically active α-keto esters derived from L-quebrachitol afforded tetrahydrofuran derivatives via 1,2-silyl migration with high level of diastereoselectivity. Removal of the chiral auxiliary gave silyl-substituted tetrahydrofurans of excellent optical purity.
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