Fluoroaliphatic esters of fluorosulfonic acid. 2. Reaction of bis(fluorosulfato)perfluoroalkanes with cesium fluoride
摘要:
2,3-Bis(fluorosulfato) perfluoroalkanes split under the action of CsF in the absence of solvents, giving a mixture of alpha-fluorosulfatoperfluoro ketones, perfluoroalkene sulfates, and perfluoro alpha-diketones. The occurrence of these reactions in solutions results mainly in the formation of oxides of the corresponding fluoroolefins or products of their conversions. The reactions carried out are the first examples of nucleophilic substitution at a secondary carbon atom in a perfluorinated saturated chain.
Abstract : The reactions of peroxydisulfuryldifluoride with several substances have been examined. Three new fluorosulfonates, octafluorobis(fluorosulfonato) cyclopentane (C5F8(SO3F)2), tetrafluorobis(fluorosulfonato)ethane (C2F4(SO3F)2) , and tetrafluorobis(fluorosulfonato)sulfur (VI) (SF4(SO3F)2) were produced by direct combination of peroxydisulfuryldifluoride with perfluorocyclopentene (C5F8)