间—二甲胺基苯胺与对—二甲胺基苯胺是高铁二胺组织化学染色法的二个主要成份,两者的用量比为6:1。本文报道了以N,N—二甲基苯胺为原料,硝化时同时得到间位与对位两种异构体,分别还原后即可得到此两个化合物,且两者的产量比恰能符合所需。本文还探讨了对位异构体的三种还原方法,求得较为简捷而经济的合成路线。合成的产品染色效果满意,已供全国胃癌协作组的廾个单位应用 Meta-dimethylamino-aniline and p-dimethylamino-aniline are the two main components of the histochemical staining of ferric-diamine. The ratio of the two is 6: 1. In this paper, N, N-dimethylaniline was used as a starting material to obtain both the meta and para isomers at the same time. The two compounds were obtained after reduction respectively, Required. This article also discusses the three isomers of the reduction method, obtained relatively simple and economical synthesis route. Satisfactory results of the dyeing of synthetic products, for the National Gastric Cancer Collaborative Group, a unit of application