Syntheses of (1,1-dihydroperfluoroalkyl)aryliodonium triflates and their analogues

(1,l-Dihydroperfluoroalkyl)phenyl- and - p -fluorophenyliodonium triflates 2 and 3 were synthesized by the reaction of l-bis(trifluoroacetoxy)iodo-1,l-dihydroperfluoroalkanes 1 with triflic acid and benzene or fluorobenzene in 1,1,2-trichlorotrifluoroethane. The use of fluorosulfonic acid and sulfuric acid instead of triflic acid afforded (1,l-dihydroperfluoroalkyl) phenyliodonium fluorosulfonate 4 and sulfate 5 , respectively. Similarly, (1,1,ω-trihydroperfluoroalkyl)phenyliodonium triflate 7 and 1,1,5,5-tetrahydroperfluoropentane-l,5-bisphenyliodonium triflate 9 were synthesized.