【摘要】 对碳酸二甲酯与环己胺化合生成N-环己基氨基甲酸甲酯的反应进行了研究.考察了催化剂BF3的催化活性和相关反应条件.控制反应的较佳参数为:催化剂用量为n(环己胺)∶n(BF3)=20∶1;反应回流时间为20 h;反应温度控制在70℃;反应物配比n(DMC)∶n(环己胺)=1.5∶1.最高产率为49.05%,且反应后处理简单,对环境污染少.产品纯度高,达99.94%.更多还原

【Abstract】 The catalytic synthesis of methyl N-cyclohexyl carbamate （MCHC） via cyclohexylamine（CHA） and dimethyl carbonate was studied in the presence of BF₃.The catalytic activity of catalyst and relative reaction conditions were investigated.The optimal process was proposed as follows: the reaction ratio: n（DMC）∶n（CHA）=1.5∶1;the reaction time:20 h;the reaction temperature: 70℃;and the amount of catalyst: n（CHA）∶n（BF₃）=20∶1.The highest yield of the reaction is 49.05%.The material is safe and the post process is simple;so the reaction does not almost pollute the environment.The pure degree of the product of the reaction is high,above 99.9%.更多还原