diphenylamine

Picoline is the by-product in the preparation of diphenylamine with aniline.

甲基吡啶是续缩合合成二的副产物。

Diphenylbenzidine was synthesized by diphenylamine using glacial acetic acid and water as solvent in acidic condition.

以二为原料,水和冰醋酸为溶剂,在酸条件一步合成二基联二,该方法具有操作简单,原料易得等优点。