Generation of trifluoromethylcopper from chlorodifluoroacetate

Article abstract of DOI:10.1016/S0022-1139(00)80126-8

In the presence of fluoride ion, methyl chlorodifluoroacetate undergoes halide ion-promoted decarboxylation to give trifluoromethide which can be trapped with cuprous iodide.The resulting trifluoromethyl copper reagent has been observed spectroscopically and can be trapped with aryl iodides to give the corresponding trifluoromethylaromatic compound.