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…