催化定位硝化合成3,4-二甲基硝基苯  

Regio-selective Preparation for 3,4-Dimethylnitrobenzene by Catalytic Nitration

作　　者：高山[1] 李忠民[1] 尹永波[1] 张振明[1] 

机构地区：[1]沈阳化工研究院,沈阳110021

出　　处：《染料与染色》2003年第4期231-231,238,共2页Dyestuffs and Coloration

摘　　要：邻二甲苯在催化剂存在下,10℃-30℃,以理论量硝酸进行硝化,硝化物中的3,4-二甲基硝基苯收率高于88％, 含量达到70％-75％,比旧工艺提高30％以上,而且废水量比原来减少4/5。3,4-dimethylnitrobenzene was prepared by nitration of o-xylene with a stoichiometric quantity of nitric acid in the presence of a catalyst at 10-30℃. The yield was >88%, purity was 70-75% and 30% higher than with previous processes, and the volume of wastewater was 80% lower than with former processes.

关 键 词：邻二甲苯 催化 定位 硝化 合成 3 4-二甲基硝基苯 

分 类 号：O625.6[理学—有机化学]