1,3-二氯苯 、
2,2,2-三氟乙醛 、
硫酸 以1 mol (374 g) of α,α-bis-(2,4-dichlorophenyl)-β,β,β-trifluoroethane (obtained by condensation of m-dichlorobenzene with fluoral in the presence of concentrated sulfuric acid)的产率得到α,α-bis-(2,4-dichlorophenyl)-β,β,β-trifluoroethane