采用溶胶-凝胶法制备了硅胶负载Rh(PPh3)3Cl-离子液体催化剂Rh-DMImBF4/SiO2-gel,并对其催化胺类化合物氧化羰化制二取代脲反应的活性进行了考察. 结果表明,该催化体系对胺类化合物氧化羰化制二取代脲反应具有较高的催化活性,产物分离简单,催化剂易回收且具有较好的重复使用性能. 以氧为氧化剂时,苯胺转化率可达95%,脲的选择性可达98%以上. 以硝基苯为氧化剂时,苯胺转化率为93%,硝基苯转化率为92%,脲的选择性为98%以上,转化频率均超过 11000 mol/(mol·h). 此外,还制备了Co-DMImBF4/SiO2-gel,Pd-DMImBF4/SiO2-gel和Ru-DMImBF4/SiO2-gel等催化剂,并对其催化氧化羰化胺类化合物的性能进行了考察.
参考文献
| [1] | Shi F;Deng Y Q;Sima T L;Yang H Zh .[J].Journal of Catalysis,2001,203(02):525. |
| [2] | Kim H S;Kim Y J;Lee H;Lee S D, Chin C S .[J].Journal of Catalysis,1999,184(02):526. |
| [3] | Bassoli A;Rindone B;Tollari S .[J].Journal of Molecular Catalysis(China),1990,60(01):41. |
| [4] | Yin G;Jia C;Kitamura T;Yamaji T, Fujiwara Y .[J].Journal of Organometallic Chemistry,2001,630(01):11. |
| [5] | Shi F.;Deng YQ. .Polymer-immobilized gold catalysts for the efficient and clean syntheses of carbamates and symmetric ureas by oxidative carbonylation of aniline and its derivatives[J].Journal of Catalysis,2002(2):548-551. |
| [6] | 杨瑛,陆世维.硒催化硝基苯的还原羰基化生成苯氨基甲酸酯[J].催化学报,1999(03):224-226. |
| [7] | Lee C W;Lee S M;Oh J S;Lee J S .[J].Catalysis Letters,1993,19(2/3):217. |
| [8] | Yang Y.;Lu SW. .Selenium-catalyzed reductive carbonylation of nitrobenzene with amines as coreagents to give unsymmetric phenylureas[J].Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry,1999(26):4845-4846. |
| [9] | Shi F;Deng Y Q;Sima T L;Peng J J,Gu Y L,Qiao B T .[J].Angewandte Chemie International Edition,2003,42(28):3257. |
| [10] | Yang H Zh;Deng Y Q;Shi F .[J].Journal of Molecular Catalysis A:Chemical,2001,176(1-2):73. |
| [11] | Leung T W;Dombek B D.[J].Journal of the Chemical Society,Chemical Communications,1992(03):205. |
| [12] | Maddinelli G;Nali M;Rindone B .[J].Journal of Molecular Catalysis(China),1987,39(01):71. |
| [13] | Gupte S P;Chaudhari R V .[J].Journal of Catalysis,1988,114(02):246. |
| [14] | 顾彦龙,彭家建,乔琨,杨宏洲,石峰,邓友全.室温离子液体及其在催化和有机合成中的应用[J].化学进展,2003(03):222-241. |
| [15] | Welton T .[J].Chemical Reviews,1999,99(08):2071. |
| [16] | Wassercheid P;Welton T.Ionic Liquid in Synthesis[M].Weinheim:Wiley-VCH,2003 |
| [17] | Shi F;Peng J J;Deng Y Q .[J].Journal of Catalysis,2003,219(02):372. |
| [18] | Itatani H;Bailar J C Jr .[J].Journal of the American Oil Chemists'Society,1967,44(02):147. |
| [19] | Venanzi L M.[J].Journal of the Chemical Society,1958(02):719. |
| [20] | Aresta M;Rossi M;Sacco A .[J].INORGANICA CHIMICA ACTA,1969,3:227. |
| [21] | Stephenson T A;Wilkinson G .[J].Journal of Radioanalytical and Nuclear Chemistry,1966,28(04):945. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%