The radical addition reactivity of tert-butyl α-trifluoromethylacrylate (CH2C(CF3)COOC(CH3)3) (BFMA) with cyclicethers was investigated in order to compare to that of perfluoroisopropenyl ester. One to one addition compound of BFMA with tetrahydrofuran (THF) was produced in fairy high yields in the presence of 2,2′-azobisisobutyronitrile, benzoyl peroxide or di-tert-butyl peroxide to give 2-substituted