| 高分子载体Lewis酸催化剂聚苯乙烯-四氯化钛复合物 |
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| 引用本文： | 冉瑞成,蒋硕健,沈吉.高分子载体Lewis酸催化剂聚苯乙烯-四氯化钛复合物[J].应用化学,1985,0(1):29-33. |
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| 作者姓名： | 冉瑞成 蒋硕健 沈吉 |
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| 作者单位： | 1. 北京大学化学系;2. 北京化纤学院化学系 |
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| 摘 要： | 交联聚苯乙烯白球(含DVB 5～7%)在CS2中与TiCl4反应可形成一种稳定的复合物,其含氯量为4.5%。这种复合物不怕水,在空气中放置一年以上不失效。这种高分子载体Lewis酸催化剂可作为酯化、缩醛、缩酮、成醚和付氏烷基化等有机合成反应的良好催化剂,还可重复使用4—5次。
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| 收稿时间： | 1984-07-18 |
| 修稿时间： | 1984-10-04 |
A LEWIS ACID CATALYST SUPPORTED BY POLYMER POLYSTYRENE-TITANIUM TETRACHLORIDE COMPLEX |
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| Ran Ruicheng,Jiang Shuojian,Shen Ji.A LEWIS ACID CATALYST SUPPORTED BY POLYMER POLYSTYRENE-TITANIUM TETRACHLORIDE COMPLEX[J].Chinese Journal of Applied Chemistry,1985,0(1):29-33. |
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| Authors: | Ran Ruicheng Jiang Shuojian Shen Ji |
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| Institution: | 1. Dep. of Chem., Beijing University;2. Beijing Chemical Fiber College |
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| Abstract: | Polystyrene,cross-linked with 5-7% of divinylbenzene,is combined with TiCl4 in CS2 to form a stable complex containing 4.5% of chlorine. The TiCl4 complexed in the polymer is resistant to water and can store in air at least for one year. The Lewis acid complex catalyst can be used to catalyze the conversion of aromatic aldehydes,carboxylic acids,ketones and some alcohols into corresponding acetals,esters,ketals and ethers in hish yield. The complex is also effective for the Friedel-Crafts alkylation reaction. For these reactions the title catalyst can be used repeatedly 4-5 times. |
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