Synthesis of keto hexafluoro alkyl sulfonyl amides via radical ring-opening polymerization of aryl-substituted vinyl cyclohexafluoro-propane-1,3-bis(sulfonyl)amides followed by hydrolysis

The radical reaction of aryl-substituted vinyl cyclohexafluoropropane-1,3-bis(sulfonyl)amides (c-HFSI) followed by hydroly-sis affords novel fluoroalkyl compounds. The key process in this reaction is the radical addition of c-HFSI to vinyl triflate, which is followed by -cleavage (ring-opening reaction) and subsequent sulfur dioxide elimination to form fluoroalkyl radi-cals. By replacing the hydrolysis with a reduction reaction, a robust polymer was obtained.