FIELD: chemistry.
SUBSTANCE: method comprises reacting bromopentaflurobenzene with zinc in molar ratio 1:1 in a polar aprotic solvent selected from a group comprising dimethyl formamide, dimethyl acetamide, N-methylpyrrolidone, acetonitrile in the temperature range of 30-70°C; the obtained pentafluorophenyl zinc bromide solution is reacted with tert-butyl ether of peroxy acid, such as tert-butylperoxybenzoate, tert-butylperoxyacetate, tert-butylperoxytrifluoroacetate, in the presence of monovalent copper salts CuX, where X=Cl, Br, I, in molar ratio bromopentaflurobenzene : tert-butyl ether of peroxy acid : CuX of 1:1:0,1; the formed tert-butyl ether of pentafluorophenol is separated and hydrolysed by heating with concentrated hydrochloric acid; the desired pentafluorophenol is separated using known techniques with output of 75-91%.
EFFECT: high output.
5 ex
