Journal of Fluorine Chemistry p. 219 - 232 (1984)
Update date:2022-08-10
Topics:
Oudrhiri-Hassani, M.
Brunel, D.
Germain, A.
Commeyras, A.
Perfluoroalkanesulfonic anhydrides <(RFSO2)2O ; RF=CF3,C2F5,C4F9>, mixed with the parent acid, decompose thermally to give the corresponding perfluoroalkyl perfluoroalkanesulfonates (RFSO3RF) with liberation of SO2.If the perfluoroalkyl moieties in the anhydride and the acid are different, a mixture of symmetric and unsymmetric esters is obrained.An ionic bimolecular mechanism is deduced from the results, and a new easy synthesis of the symmetric perfluorinated sulfonic esters is proposed.
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