Treatment of potassium bromodifluoroacetate(1)with alkyl halides in thepresence of copper,iodide and potassium fluoride in DMF at 85—90℃ for 3—5h gavethetrifluoromethylated derivatives in moderate to high yields. Treatment of potassium bromodifluoroacetate (1) with alkyl halides in the presence of copper, iodide and potassium fluoride in DMF at 85-90 ° C for 3-5 h gave thetrifluoromethylated derivatives in moderate to high yields.