The present invention relates to a process for the preparation of 3,3′,5,5′-Tetramethylbenzidine represented by formula I, and processes for the preparation of intermediates used in the preparation of 3,3′,5,5′-Tetramethylbenzidine.
本发明涉及以式 I 为代表的 3,3′,5,5′-四甲基
联苯胺的制备工艺,以及用于制备 3,3′,5,5′-四甲基
联苯胺的中间体的制备工艺。