Abstract
▪ 1. R FR′ FR″ FCF 3 2. R FR″ FCF 3, R′FC 6F 13 3. R FR′ FC 6F 13, R″ FCF 3 4. R FC 6F 13, R′ F(CF 3) 2CF, R′ FCF 3 The fluoroalkylmonofluorosilanes IV have been obtained in good yields (50–90%) from the reaction of an excess of trifluorosilane II (prepared from the corresponding trichlorosilane I) with a fluorinated organomagnesium reagent III. Then, substitution of the last fluorine atom has been made by reaction with the fluorinated organolithium V, and the tetra(fluoroalkyl) silanes VI have, thus, been prepared. All the products have been characterized by 1H, 19F and 29Si NMR spectroscopy.
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