| Knoevenagel condensation catalysed by poly（vinyl chloride） supported tetraethylenepentamine （PVC-TEPA） |
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| 引用本文： | Fen Dong Yi Qun Li Rong Feng Dai. Knoevenagel condensation catalysed by poly（vinyl chloride） supported tetraethylenepentamine （PVC-TEPA）[J]. 中国化学快报, 2007, 18(3): 266-268. DOI: 10.1016/j.cclet.2007.01.023 |
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| 作者姓名： | Fen Dong Yi Qun Li Rong Feng Dai |
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| 作者单位： | Fen Dong，Yi Qun Li *，Rong Feng DaiDepartment of Chemistry，Jinan University，Guangzhou 510632，China |
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| 基金项目： | 国家自然科学基金;广东省自然科学基金 |
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| 摘 要： | Poly(vinyl chloride) supported tetraethylenepentamine (PVC-TEPA) has been found to be an efficient catalyst for the Knoevenagel condensation. A wide range of aromatic aldehydes easily undergo condensations with ethyl cyanoacetate and malononitrile in the commercial 95% ethanol in refluxing using PVC-TEPA as catalyst to afford the desired products of good purity in moderate to excellent yields. A recycling study confirmed that the catalyst could be reused, the yield of the desired condensation product were not reduced. The merits of this protocol are environmentally benign, simple operation, convenient work-up and good yields. Furthermore, the catalyst can easily be recovered and reused at five times with comparable yields.
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| 关 键 词： | 聚氯乙烯负载 四乙五胺 氨络物 Knoevenagel缩合反应 催化 |
| 收稿时间： | 2006-09-26 |
Knoevenagel condensation catalysed by poly(vinyl chloride) supported tetraethylenepentamine (PVC-TEPA) |
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| Fen Dong,Yi Qun Li,Rong Feng Dai. Knoevenagel condensation catalysed by poly(vinyl chloride) supported tetraethylenepentamine (PVC-TEPA)[J]. Chinese Chemical Letters, 2007, 18(3): 266-268. DOI: 10.1016/j.cclet.2007.01.023 |
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| Authors: | Fen Dong Yi Qun Li Rong Feng Dai |
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| Affiliation: | Department of Chemistry, Jinan University, Guangzhou 510632, China |
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| Abstract: | Poly(vinyl chloride) supported tetraethylenepentamine (PVC-TEPA) has been found to be an efficient catalyst for the Knoevenagel condensation. A wide range of aromatic aldehydes easily undergo condensations with ethyl cyanoacetate and malononitrile in the commercial 95% ethanol in refluxing using PVC-TEPA as catalyst to afford the desired products of good purity in moderate to excellent yields. A recycling study confirmed that the catalyst could be reused, the yield of the desired condensation product were not reduced. The merits of this protocol are environmentally benign, simple operation, convenient work-up and good yields. Furthermore, the catalyst can easily be recovered and reused at five times with comparable yields. |
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| Keywords: | Knoevenagel condensation PVC-supported tetraethylenepentamine Catalysis |
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