A Novel Catalytic Pathway for Perfluoroacyl Peroxide Synthesis

Abstract

A new catalytic method for synthesis of bis(perfluoroacyl) peroxides (BPFAP) was elaborated by using hydrogen peroxide and perfluoroacyl anhydrides. The desired BPFAP were formed quantitatively in situ when perfluoroacyl anhydride was mixed with hydrogen peroxide (ratio > or = 2:1) in the presence of a catalytic amount of the carboxylate R(f)COO-M+. The essentially irreversible character of this process was shown experimentally and supported on the basis of DFT calculations. The synthesis of new acetyltrifluoroacetyl peroxides is also described. Reaction: see text.