Disclosed is a method of making 2,4,5-trihalobenzoic acid by heating to a temperature of about 130.degree. to about 190.degree. C. a composition that comprises water, a mineral acid, and a compound having the general formula ##STR1## where "X" is fluorine, chlorine, or bromine and "R" is alkyl from C.sub.1 to C.sub.10 or aryl. The fluorine product is useful in making quinolone antibacterial drugs.
本发明公开了一种制备2,4,5-三卤
苯甲酸的方法,该方法通过加热一种包含
水、矿物酸和具有一般式##STR1##的化合物的组合物至约130℃至约190℃的温度来实现,其中“X”为
氟、
氯或
溴,“R”为碳数为C.sub.1至C.sub.10的烷基或芳基。该
氟化物产品可用于制造喹诺
酮类抗菌药物。