According to literature reports 3 , to a Schlenk tube equipped with stir bar, boronic acid (1.0 equiv., 10 mmol), K2CO3 (2.0 equiv., 20 mmol), and Pd(PPh3)4 (3 mol%, 0.3 mmol) were added. The vessel was evacuated and filled with nitrogen (three times), and then water (40 mL) and THF (40 mL) were added. After addition of , the solution was stirred at 60 ℃ with heating mantle for 12 hours (TLC tracking detection). The solvent was removed under reduced pressure and the residue was purified by column chromatography to afford the corresponding trifluoromethyl alkene (PE-PE/EA).