| Yb(OTF)3催化2,4-二氨基甲苯与碳酸二甲酯甲氧羰基化合成2,4-甲苯二氨基甲酸甲酯 |
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| 引用本文： | 马新宾,王宇飞,王胜平.Yb(OTF)3催化2,4-二氨基甲苯与碳酸二甲酯甲氧羰基化合成2,4-甲苯二氨基甲酸甲酯[J].天津大学学报(自然科学与工程技术版),2005,38(9):786-790. |
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| 作者姓名： | 马新宾 王宇飞 王胜平 |
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| 作者单位： | 天津大学化工学院绿色合成与转化教育部重点实验室,天津300072 |
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| 摘 要： | 研究了Yb（OTF），催化剂对2，4-二氨基甲苯（TDA）与碳酸二甲酯甲氧羰基化反应合成2，4-甲苯二氨基甲酸甲酯（TDC）的催化活性，考察了反应温度和反应时间对Yb（OTF），催化活性的影响。在该催化剂的作用下，反应温度453K，反应时间5h时TDA转化率可达100％，TDC的产率达到23、6％，同时考察了Yb（OTF）3催化剂的寿命，经4次重复使用催化剂基本不失活。Ln（OTF）3（Ln=La，Nd，Yb）催化活性的比较表明催化剂Lewis酸性的强弱与TDC的产率成正比。
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| 关 键 词： | 2 4-二氨基甲苯 碳酸二甲酯 Yb（OTF）3 2 4-甲苯二氨基甲酸甲酯 甲氧羰基化 |
| 文章编号： | 0493-2137(2005)09-0786-05 |
| 收稿时间： | 05 10 2004 12:00AM |
| 修稿时间： | 10 12 2004 12:00AM |
Catalytic Methoxycarbonylation of 2,4-Toluene Diamine with Dimethyl Carbonate to Synthesize Dimethyltoluene -2,4-Dicarbamate over Ytterbium Triflate |
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| Ma XinBin;Wang YuFei;Wang ShengPing.Catalytic Methoxycarbonylation of 2,4-Toluene Diamine with Dimethyl Carbonate to Synthesize Dimethyltoluene -2,4-Dicarbamate over Ytterbium Triflate[J].Journal of Tianjin University(Science and Technology),2005,38(9):786-790. |
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| Authors: | Ma XinBin;Wang YuFei;Wang ShengPing |
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| Abstract: | The synthesis of dimethyltoluene-2 ,4-dicarbamate ( TDC) from 2,4-toluene diamine and dimethyl carbonate (DMC) is a typical non-phosgene route. The methoxycarbonylation of 2 ,4-toluene diamine ( TDA ) with DMC was catalyzed by ytterbium Inflate. Effects of reaction temperature and reaction time on the synthesis of TDC were discussed. TDA conversion was 100% and TDC productivity was 23. 6% at 453 K in 5 h. Meanwhile, the test proved that the catalyst could be reused. The catalytic activity of Ln (OTF)3( Ln = La, Nd, Yb) showed the Lewis acidity of Ln( OTF)3 catalysts was in proportion to TDC yield. |
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| Keywords: | 2 4-toluene diamine dimethyl carbonate ytterbium triflate dimethyltoluene-2 4-dicarbamate methoxycarbonylation |
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