... Catalysis Communications. ... the amine functional group needs to be neutralized [9], however, the amount of CH 3 SO 3 H used in this catalytic tests was only ... 2 > FeCl 3 > ZnCl 2 > CoCl 2 > BiCl 3 > SnCl 4 > CrCl 3 . When CuCl 2 and FeCl 3 were used as catalysts, benzyl alcohol ...