Preparation method of 4-aminobenzene borate hydrochloride_Kain Industrial Additive

background and overview[1] for the currently known reported 4-aminobenzene borate hydrochloride, 4-aminobromobenzene is usually used as the raw material. after the amino group is protected, n-butyllithium and borate are used at low temperature conditions of around -78°c. after reaction, the product is obtained after acidification and purification. this method has the following disadvantages: 1. the…