Patent ID: 7534906

Claim:
A process for the synthesis of compounds having a hydrofluoromethylenesulfonyl radical from an alkyl thiolate, the process comprising the steps of: a) reacting (1) an alkyl thiolate and an associated cation with (2) a compound exhibiting a carbon of sp 3 hybridization carrying a hydrogen, a fluorine, a heavy halogen selected from the group consisting of chlorine, bromine and iodine, and an electron-withdrawing group which is fluorine or a group having a Hammett constant (σ p ) value of at least equal to 0.2, in a solvent; and b) oxidizing the compound formed in step a) in the presence of an aqueous phase; said solvent of step a) being a water-immiscible solvent, an aqueous phase or a two-phase combination of a water-immiscible solvent and of an aqueous phase, said aqueous phase comprising at most ⅓ by weight of water-miscible nonaqueous solvent; with a ratio of the amount, in equivalents, of the alkyl sulfide to the amount, in moles, of water being at most equal to 50.