- REACTIVITE DES ESTERS SULFONIQUES ET PYROSULFONIQUES PERFLUORES RFSO3RF ET RFSO3SO3RF. HETEROLYSE DE LA LIAION S-O
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Perfluoroalkyl perfluoroalkanesulfonates RFSO3R'F (RF, R'F = CF3, C2F5) and perfluoroalkyl perfluoroalkanepyrosulfonates RFSO3SO3RF, mixed with perfluoroalkanesulfonic acids (CF3SO3H or C2F5SO3H) decompose thermally.Depending on the starting materials, different products result from nucleophilic attack of a perfluoroalkanesulfonate anion of the acid on the sulfur atom of the sulfonate group of the ester, with heterolysis of the S-O bond.Therefore, under these conditions, the perfluorinated esters are not perfloroalkylating agents, but rather perfluorosulfonylating agents.
- Oudrhiri-Hassani, M.,Brunel, D.,Germain, A
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p. 163 - 178
(2007/10/02)
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- THERMOLYSE DES ANHYDRIDES PERFLUOROALCANESULFONIQUES. MECANISME ET APPLICATION A LA SYNTHESE DES ESTERS RFSO3RF.
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Perfluoroalkanesulfonic anhydrides FSO2)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.
- Oudrhiri-Hassani, M.,Brunel, D.,Germain, A.,Commeyras, A.
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p. 219 - 232
(2007/10/02)
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- THERMAL STABILITY OF PERFLUOROALKANESULFONIC ACIDS AND THEIR ANHYDRIDES. NEW AND EASY APPROACH TO RFSO2ORF ESTERS.
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Perfluoroalkanesulfonic anhydrides (RFSO2)2O when mixed with acids decompose into perfluoroalkanesulfonic esters RFSO2ORF, thereby providing a new facile synthesis of these esters from perfluoroalkanesulfonic acids and phosphorus pentoxide.
- Hassani, M. Oudrhiri,Germain, A.,Brunel, D.,Commeyras, A.
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