REACTIONS OF POLYFLUORINATED 2,5-CYCLOHEXADIENONES AT THE CARBONYL GROUP

Perfluoro-4-phenoxy-2,5-cyclohexadienone reacts with phenyl- and penta fluorophenylhydrazines to give products of nucleophilic substitution o f the fluorine atom at the double bond, 3-arylazotetrafluorophenols. I n the presence of aluminum chloride, the reactions proceed at the carb onyl groups of polyfluorinated cyclohexadienones to form the correspon ding polyfluorinated azobenzenes. Perfluoro-4-phenoxy-2,5-cyclohexadie none reacts with butyllithium and butylmagnesium bromides to give the product of addition at the carbonyl group.