Fluoroaliphatic esters of fluorosulfonic acid. 2. Reaction of bis(fluorosulfato)perfluoroalkanes with cesium fluoride

2,3-Bis(fluorosulfato)perfluoroalkanes split under the action of CsF in the absence of solvents, giving a mixture of -fluorosulfatoperfluoro ketones, perfluoroalkene sulfates, and perfluoro -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.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2057–2063, September, 1990.