Abstract
2-Benzylidene-4,4-difluorodihydrofuran-3(2H)-ones were synthesised in 58―86% yield via phosphine-promoted cyclisation of β-hydroxy-α,α-difluoroynones. The benzylidene group was found to be a suitable masked carbonyl group, thereby allowing for the validation of a novel route to 3,3-difluoro-2-hydroxy-γ-lactols.
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