α-Alkoxystannyl ethers in organic synthesis: Synthesis of functionalised γ-butyrolactones

Abstract Ozonolysis of a variety of (tetraydrofuran-2-yl)tri-n-butylstannanes affords the corresponding γ-butyrolactones in good to excellent yields. This reaction is tolerant to a range of other functional groups and provides access to substituted γ-butyrolactones not available from aldol reactions of the parent lactone.