| abstract |
Process for the preparation of aryl perfluoroalkyl ketones of the general formula I <IMAGE> in which the radicals R 1 to R 5 are identical or different and hydrogen, alkyl having 1 to 6 carbon atoms, which can be perfluorinated, halogen, alkoxy or alkylthio each having 1 to 6 Carbon atoms in the alkyl radical and n is 1 to 6, characterized in that arylcarboxylic acid derivatives of the general formula II <IMAGE> in which R¹ to R <5> have the meaning given and X as a monovalent symbol chlorine, bromine or fluorine and as a divalent symbol Anhydride bridge means reacting with perfluoroalkyl halides of the general formula CnF2n + 1-Hal (III), in which Hal is chlorine, bromine or iodine, in the presence of phosphoric acid trisdialkylamides of the general formula P [N (alkyl) 2] 3 (IV). |