The preparation of ethyl p-hydroxybenzoate by the catalytic reaction of p-hydroxybenzoic acid with ethanol with copper p-toluene sulfonate as catalyst had been studied.

• 研究了以对羟基苯甲酸、乙醇为原料、对甲苯磺酸铜为催化剂、合成对羟基苯甲酸乙酯,并讨论了催化酯化的影响因素。