METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.

方法以对硝基苯甲酰氯为起始原料,经缩合、还原、重化、偶合、成盐等反应柳二。

According to the problems in dyes production,the role of cupric ion in coupling-cupric complexation was discussed,and the chelated forms of formazane reactive dyes were introduced.

合生产和应用中的实际问题,对偶合-铜络一步完成中铜盐的作用、甲铜络合物的啮合形式及其性能等研究成果进行了介绍。