The addition of (CF3SO2)2CHBr to vinylidene fluoride

A mixture of (CF3SO2)2CH2 and (CF3SO2)2Br2 can be used instead of (CF3SO2)2CHBr in the radical addition to H2CCF2. New 1:1 and 1:2 adducts have been isolated and characterized. In addition, an improved synthesis of (CF3SO2)2Br2 has been found.