Fluorine-containing carbocations. IV. The use of salt solutions of stable polyfluorinated α,α-difluorobenzyl and α-fluorodiphenylmethyl cations in antimony pentafluoride in the synthesis of polyfluorinated benzoic acids,benzophenones and diphenyldifluoromethanes

Polyfluorinated benzoic acids have been prepared by the hydrolysis of solutions of salts of polyfluorinated α,α-difluorobenzyl cations in SbF₅. Polyfluorinated benzophenones and diphenyldifluoromethanes have been obtained both by hydrolysis and by pouring into HF solutions of the salts of polyfluorinated α-fluorodiphenylmethyl cations.