| 硅胶支载聚乙二醇相转移催化作用的研究 |
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| 引用本文： | 康汝洪 范风格. 硅胶支载聚乙二醇相转移催化作用的研究[J]. 应用化学, 1989, 6(3): 78-80 |
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| 作者姓名： | 康汝洪 范风格 |
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| 作者单位： | 河北师范大学化学系 石家庄(康汝洪，范风格，何宴章)，河北师范大学化学系 石家庄(张兰平) |
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| 摘 要： | 冠醚、鏻盐可支载于硅胶而形成有效的相转移催化剂.Sawiki报道,平均分子量为400的聚乙二醇(PEG)支载于硅胶对KOAc与n-C_4H_9Br的反应有明显的催化作用.本文报道硅胶支载不同链长PEG的催化剂在酯化反应和一些亲核取代反应中的催化效能,及PEG链长、催化剂用量、溶剂极性等对催化效能的影响.
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| 关 键 词： | 硅胶 聚乙二醇 催化活性 酯化反应 亲核取代反应 |
| 收稿时间： | 1988-07-13 |
SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS |
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| Kang Ruhong,Fan Fengge,He Yanzhang,Zhang Lanping. SILICA GEL SUPPORTED POLYETHYLENE GLYCOLS FOR PHASE TRANSFER CATALYSIS[J]. Chinese Journal of Applied Chemistry, 1989, 6(3): 78-80 |
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| Authors: | Kang Ruhong Fan Fengge He Yanzhang Zhang Lanping |
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| Affiliation: | Kang Ruhong,Fan Fengge,He Yanzhang,Zhang Lanping Department of Chemistry,Hebei Teacher's University,Shijiazhuang |
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| Abstract: | Polyethylene glycols with different mean molecular weight (200-1000) were immobilizedonto silica gels. They all exhibited a certain catalytic activity in esterification and somenucleophilic substitution reactions. The influence of the chain length of polyethylene glycol,the dosage of catalyst used and the polarity of the solvents on the catalytic activity werestudied. The catalysts could be used repeatedely seven times with little loss of its activity. |
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| Keywords: | Silica gel Polyethylene glycol Catalytic activity Esterification Nucleophilic substitution |
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