Thermolyse des halogenures de perfluoroalcanesulfonyle |
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| Authors: | M Oudrhiri-Hassani D Brunel A Germain A Commeyras |
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| Institution: | E.R.A. 555, laboratoire de chimie organique, Université des Sciences et Techniques du Languedoc, Place E.Bataillon, 34060 Montpellier Cédex France |
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| Abstract: | Perfluoroalkanesulfonyl chlorides RFSO2Cl ; RF CF3, C2F3, C4F9], decompose thermally to give the corresponding perfluoroalkyl chlorides with evolution of SO2. The latter retards the reaction, but it is catalysed by copper which also inhibits the SO2 effect. 2-methyl-2-nitrosopropane traps the perfluoroalkyl free radicals. In the presence of a perfluoroalkyl iodide R′FI ≠ R′F≠RF], other products, RFI and RFCl, are obtained. A free radical chain-mechanism is then suggested.On the other hand, perfluorobutanesulfonyl fluoride is very stable thermally. |
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