Process for the preparation of aryl perfluoroalkyl ketones

Details Process for the preparation of aryl perfluoroalkyl ketones Process for the preparation of aryl perfluoroalkyl ketones

C - Chemistry, Metallurgy

07

C

260/579

C07C 45/68 (2006.01) C07C 45/45 (2006.01) C07C 49/76 (2006.01) C07C 49/80 (2006.01) C07C 49/84 (2006.01) C07C 323/09 (2006.01)

Patent

CA 1301191

87/F 221 Abstract A process for the preparation of arylperfluoroalkyl ketones of the general formula I Image (I), wherein R1 to R5 represent at least one of the substituents hydrogen, halogen, alkyl, alkoxy, alkylthio and perfluorinated alkyl, each having from 1 to 6 carbon atoms and n is an integer from 1 to 6, which comprises reacting an aryl carbonyl compound having the general formula II Image (II), wherein R1 to R5 have the above-mentioned meaning and X as a monovalent moiety represents fluorine, chlorine or bromine and as a bivalent moiety the oxygen atom of an anhydride bridge, with a perfluoroalkyl halide of the general formula CnF2n+1-Hal (III), wherein Hal represents chlorine, bromine or iodine and n is an integer from 1 to 6, in the presence of a trisdialkyl amide of phosphorous acid of the general formula P[N(alkyl)2]3 (IV).

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