邻二氯苯混酸绝热硝化制备2,3-二氯硝基苯的工艺研究  

Study on the Technology of Preparation of 2,3-Dichlornitrobenzene from O-Dichlorobenzene by Mixed Acids ADiabatic Nitration

作　　者：程秀莲[1] 李莉[1] 李勇[1] 刘英[1] 

机构地区：[1]沈阳工业学院化工分院,辽宁沈阳110045

出　　处：《沈阳工业学院学报》2001年第3期84-87,共4页Journal of Shenyang Institute of Technology

摘　　要：系统地研究了邻二氯苯混酸绝热硝化的 DVS值、混酸组成及摩尔比等因素对 2 ,3-二氯硝基苯收率的影响 .2 ,3-二氯硝基苯收率达到1 4.51 % ,3,4-二氯硝基苯与 2 ,3-二氯硝基苯的收率之比 f ( 3,4/2 ,3) =5.The preparation of 2,3 dichloronitrobenzene from O dichlorobenzene Via mixed acids adiabatic nitration is studied. The influences of factors, such as the molar ratio of reactions, DVS and the composition of mixed acids etc on the yield of 2,3 dichloronitrobenzene is investigated systematically. The yield of 2,3 dichloronitrobenzene comes up to 14 51%, f (3,4/2,3) =5 47. This value is higher than the best one of the literature.

关 键 词：邻二氯苯 2 3-二氯硝基苯 绝热硝化 混酸 制备工艺 医药中间体 

分 类 号：O625.612[理学—有机化学] TQ463.4[理学—化学]