potassium fluoride T=440 - 450°C;

Title compound not separated from byproducts;

hexaethylguanidinium chloride; sodium chloride T=130 - 140°C; 48 h; Product distribution; Further Variations:ReagentsTemperatures;

para-dichlorobenzene; 1,2-dichloro-3,4,5,6-tetrafluorobenzene; phosphorous acid trisdiethylamide in hexane T=20°C; Reduction; silyldehalogenation; 168 h; Title compound not separated from byproducts;

(i) Mg, THF, (ii) aq. H2SO4; Multistep reaction;