Fluorination process

Details Fluorination process Fluorination process

C - Chemistry, Metallurgy

07

C

260/539.2

C07C 51/58 (2006.01) C07C 63/68 (2006.01)

Patent

CA 1234152

ABSTRACT FLUORINATION PROCESS Nuclear fluorinated phthaloyl and terephthaloyl fluorides, especially tetrafluoroterephthaloyl fluoride, are obtained by reacting a corresponding nuclear chlorinated acid halide with potassium fluoride in a polar aprotic solvent, preferably sulpholane, at a temperature of from 100 to 200°C, preferably 120 to 150°C. The products are useful chemical intermediates for the synthesis of pesticides.

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