First Synthesis of 4,4-Difluoro-1,3-oxathiolan-5-one

Abstract
The synthesis of a novel 4,4-difluoro-1,3-oxathiolanone was reported from α,α-difluorosulfoxide. This route involved a fluorination of a symmetrical sulfide, a Pummerer rearrangement, and a ring closure mediated by organic acids.

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