碳酸二甲酯与有机胺羰基化合成氨基甲酸酯的研究

Study on synthesis of carbamate by carbonylation of dimethyl carbonate and organic amine

在CaCl2 ,FeCl3,MgCl2 ,PbCO3,Pb(OAc) 2 等金属盐催化剂作用下 ,碳酸二甲酯与正丁胺反应生成氨基甲酸酯。金属盐的催化活性与其路易斯酸性有关 ,反应的最佳工艺条件为n(碳酸二甲酯 )∶n(胺 ) =1∶3 ,n(催化剂 )∶n(胺 ) =7∶1 0 0 ,反应时间 7h。

In the presence of metal compounds such as CaCl2, FeCl3, MgCl2, PbCO3, Pb(OAc)2, dimethyl carbonate reacts with n-butylamine to form carbamate. The results show that acidity of Lewis acid affect the catalyst activities of metal compounds efficiently. The optimal reaction conditions are as follows: n(dimethyl carbonate): n(amine) = 1:3, n(catalyst): n(amine) = 7:100, reaction time 7 h.