2,5-二氨基甲苯系列产品合成技术的研究与进展

Research and Progress of Synthesis of 2,5-Diaminotoluene Series

在系统介绍2,5-二氨基甲苯基本合成方法的基础上,以经济、环保和新型工业化作要求,重点评述了各种方法的工艺特点、研究中的技术进展以及实施商品化生产的可行性。结果表明,以邻甲苯胺为原料经重氮偶合、还原氢解是合成2,5-二氨基甲苯及其系列产品优先的技术路线。同时提出了高质量、低成本、清洁化发展该系列产品的研究方向和内容建议。

Based on introduction of basic routes for synthesizing 2,5-diaminotoluene （2,5-TDA） , from the view points of requirements of economy, environmental protection and modern industrialization, technological characteristics of different methods and technical progress in R＆D, and feasibility of implementation of commercialization are commented emphatically. It is pointed out that preparation of 2,5-TDAs starting from o-toluidine （OT） through diazo-coupling of OT and reductire hydrogenative cleavage of OT azo compound is the prior technology. Proposed research trend and content for development of high-quality, lower cost and clearing production of 2,5-TDAs series products are suggested.