FLUORINATION PROCESS FOR THE PRODUCTION OF NUCLEAR FLUORINATED PHTHALOYL- AND TEREPHTHALOYL FLUORIDES

摘要

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 DEG C, preferably 120 to 150 DEG C. The products are useful chemical intermediates for the synthesis of pesticides.