CO羰基化合成3,4-二甲基苯甲醛的反应机理研究  

Studies on the Reaction Mechanism of CO-carbonylating Synthesis of 3,4-dimethylbenzaldehyde

作　　者：吴雨龙[1] 王为国[1] 陈苏芳[1] 王存文[1] 

机构地区：[1]武汉工程大学化工与制药学院

出　　处：《广东化工》2006年第12期17-20,共4页Guangdong Chemical Industry

摘　　要：本文分析了邻二甲苯和CO为原料羰基化合成3,4-二甲基苯甲醛的产物组成,指出在无水AlCl3的催化作用下苯环上甲基的脱落和重排是异构体众多,3,5-二甲基苯甲醛含量最多的根本原因,并据此提出了该反应的机理。The composition of products derived from the carbonylating synthesis of 3,4-dimethylbenzaldehyde with o-xylene and CO as the raw materials were analyzed. In the reaction, various isomers are generated and 3,5-dimethylbenzaldehyde has the highest content, as fundamentally originates from the break-off and rearrangement of methyls in the benzene ring under the catalysis of anhydrous AlCl3. Based on this, the mechanism of this reaction was proposed.

关 键 词：3 4-二甲基苯甲醛 3 5-二甲基苯甲醛 机理 重排 

分 类 号：TQ225.52[化学工程—有机化工]