In the water phase, benzotrichloride was condensed with resorcin by th e catalysis of mix acid to form intermediate 2,4-dihydroxybenzophenone.

• 用混和酸作催化剂,三氯甲基苯和间苯二酚在水相中缩合成中间体2,4-二羟基二苯基甲酮。