96887-04-6Relevant academic research and scientific papers
BIS(TRIFLUOROMETHYL)FLUOROSULFONYL CARBANION
Eleev, A. F.,Vasil'ev, N. V.,Sokol'skii, G. A.
, p. 250 - 255 (2007/10/02)
By comparative NMR spectroscopy a pKa value close to 0 +/- 1 on the MSED scale was obtained for 2-H-hexafluoropropane-2-sulfonyl fluoride.The corresponding salts containing the bis(trifluoromethyl)fluorosulfonyl carbanion were generated by deprotonation of the 2-H-hexafluoropropane-2-sulfonyl fluoride with triethylamine and the addition of cesium fluoride to the pentafluoropropene-2-sulfonyl fluoride.The free CH acid or pentafluoropropene-2-sulfonyl fluoride was isolated by the action of alkylating and acylating reagents on the triethylammonium or cesium salt of 2-H-hexafluoropropane-2-sulfonyl fluoride respectively.The action of halogens and pseudo halogens on the cesium salt of 2-H-hexafluoropropane-2-sulfonyl fluoride led to the formation of the corresponding 2-substituted hexafluoropropane-2-sulfonyl fluorides.
