Amino 4 bromo 5 chlorobenzoic acid is synthesized from nitrobenzene by bromination,reduction,condensation,cyclization,chlorination and oxidation.The overall yield of the 6 steps is 11.7%.

• 以硝基苯为原料，经溴化、还原、缩合、环合、氯化和氧化等6步反应合成了2-氨基-4-溴-5-氯苯甲酸，总收率为11．7%25。