Methods: P-carboxybenzenesulfonic amide was synthesized by potassium permanganate oxydation under the alkalinity environment and acidification from p-toluenesulfonic amine.

• 方法:对甲苯磺酰胺首先在碱性环境下与高锰酸钾发生氧化反应,然后再酸化生成对羧基苯磺酰胺。