96025-71-7Relevant 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.
Synthesis and Properties of Tetrakis(trifluoromethyl)-1,3-dithietane S-Oxides and Bis(trifluoromethyl)sulfine
Elsaesser, Andreas,Sundermeyer, Wolfgang,Stephenson, David S.
, p. 116 - 123 (2007/10/02)
The corresponding S-oxides 2-6 could be obtained by oxidation of 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane (1).Similar oxidation of 2,2,4,4-tetrakis(trifluoromethyl)thiirane (8) yields the episulfoxide 12, but not the episulfone 14.Pyrolysis of 2, 3, 5, and 6 have been investigated and bis(trifluoromethyl)sulfine (7) could be isolated as the first member of perfluoroalkylsulfines as well as the sulfonylfluoride 13 being the product of isomerization of bis(trifluoromethyl)sulfene (9). 7 could also be obtained by ring opening from 3 with bases and by oxidation of hexafluorothioacetone (11), respectively.Solvolytic ring opening in 5 and 6 yields the sulfones 16 and 17.
