N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯甲酸和对氧胺为原料,经过胺的、二芳胺的环、N-烷、硫代反应合成了N--2-氧硫代吖啶酮。