| 壳聚糖席夫碱钯催化碘代苯与丙烯酸乙酯反应 |
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| 引用本文： | 刘蒲,杨永环,刘晔,张鹏. 壳聚糖席夫碱钯催化碘代苯与丙烯酸乙酯反应[J]. 功能高分子学报, 2007, 20(2): 178-183 |
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| 作者姓名： | 刘蒲 杨永环 刘晔 张鹏 |
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| 作者单位： | 1. 郑州大学化学系,郑州,450052
2. 华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海,200062 |
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| 基金项目： | 河南省教育厅自然科学研究项目(2006150025) |
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| 摘 要： | 以水杨醛与壳聚糖反应制得的壳聚糖席夫碱配体再与PdCl2反应制得了壳聚糖席夫碱钯催化剂。研究了该催化剂对碘代苯(PhI)与丙烯酸乙酯(EA)偶联生成反式肉桂酸乙酯反应的催化性能。考察了原料比、缚酸剂种类及其用量、反应温度、溶剂、催化剂用量、反应时间等因素对该反应的影响,确定了该催化反应的最佳反应条件。该催化剂经过滤分离、溶剂洗涤,循环使用4次仍有较高的催化活性。
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| 关 键 词： | 壳聚糖 席夫碱 钯催化剂 交叉偶联反应 |
| 文章编号： | 1008-9357（2007）02-0178-06 |
| 收稿时间： | 2006-09-08 |
| 修稿时间： | 2006-09-08 |
Cross-Coupling Reaction of Iodobenzene and Ethyl Acrylate Catalyzed by Chitosan Schiff-Base Palladium Catalyst |
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| LIU Pu,YANG Yong-huan,LIU Ye,ZHANG Peng. Cross-Coupling Reaction of Iodobenzene and Ethyl Acrylate Catalyzed by Chitosan Schiff-Base Palladium Catalyst[J]. Journal of Functional Polymers, 2007, 20(2): 178-183 |
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| Authors: | LIU Pu YANG Yong-huan LIU Ye ZHANG Peng |
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| Affiliation: | 1. Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China; 2. Shanghai Key Laboratory of Green Chemistry and Chemical Processes (GCCP |
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| Abstract: | Chitosan Schiff-base palladium catalyst was synthesized from chitosan and salicylaldehyde via grafting to form chitosan Schiff-base,followed by coordination with palladium chloride.The performance of this catalyst for the cross-coupling reaction of iodobenzene and ethyl acrylate was studied.Effect of different reaction conditions,such as molar ratio of iodobenzene and ethyl(acrylate),kind and amount of base,reaction temperature,solvent,amount of catalyst,reaction time,on yields were investigated.The best condition for the reaction was obtained.By filtrating from the(reaction) mixture and washing with the solvent,the catalyst could be reused for 4 times without the loss of activity. |
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| Keywords: | chitosan Shiff-base palladium catalyst cross-coupling reaction |
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