3,3’-二氯联苯胺合成新工艺的研究  

Study on New Technology of Synthesis of 3,3'-Dichlorobenzidine

作　　者：杨山药 丁军委[2] 江秀华[2] 

机构地区：[1]青岛恒源化工有限公司,山东青岛266400 [2]青岛科技大学化工学院,山东青岛266042

出　　处：《山东化工》2006年第3期10-12,共3页Shandong Chemical Industry

摘　　要：介绍了3,3’-二氯联苯胺合成新工艺,以邻硝基氯苯为基础原料,经甲醛还原和锌粉还原两步反应制得2,2’-二氯氢化偶氮苯,后经盐酸转位,精制得到3,3’-二氯联苯胺,收率可达到82%,含量可达99%。This article provides a new process for the preparation of 3, 3＇ - dichlorobenzidine by reduction of o - nitrochlorobenzene with formaldehyde and zinc power, and subsequent so- called benzidine rearrangement catalyzed by hydrochloric acid and purification. The total yield and the purity Of 3,3＇ - dichlorobenzidine can reached to 82 96 and 99 96, respectively.

关 键 词：邻硝基氯苯 3 3'-二氯联苯胺 合成 

分 类 号：TQ246.3[化学工程—有机化工]