| Abstract
| - Reactions of δ-silyl-γ,δ-epoxy-α,β-unsaturated acylsilane with alkenyl methyl ketone enolate afford highlyfunctionalized cycloheptenone derivatives via a tandem sequence featuring the combination of Brookrearrangement-mediated [3 + 4] annulation and epoxysilane rearrangement. The reactions using an oppositecombination of three and four carbon units, in which an epoxysilane moiety was incorporated in thefour-carbon unit, also give satisfactory results. Also, the possibility of chirality transfer from epoxide toremote positions via the tandem sequence using an optically active epoxide has been demonstrated.
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