Method for preparing sulphonate salts

Details Method for preparing sulphonate salts Method for preparing sulphonate salts

C - Chemistry, Metallurgy

07

C

C07C 303/22 (2006.01) C07C 309/06 (2006.01)

Patent

CA 2376481

The invention concerns a method for preparing sulphonate salts, alkaline or alkaline-earth, corresponding to anion of general formula (I): (R-CF¿2?-SO¿3??-¿)¿n?, through alkaline hydrolysis of sulphonyl chlorides corresponding to formula (II). The invention is characterised in that it comprises at least a step which consists in alkaline hydrolysis of sulphonyl chloride carried out in the presence of a phase-transfer agent.

La présente invention a pour objet un procédé de préparation de sels de sulfonate, alcalin ou alcalino-terreux, correspondant à l'anion de formule générale (I): (R-CF2-SO3-)n, via l'hydrolyse alcaline des chlorures de sulfonyles (II) correspondant, caractérisé en ce que ce procédé comprend au moins une étape d'hydrolyse alcaline du chlorure de sulfonyle effectuée en présence d'un agent de transfert de phase.

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