| Ionic liquids as efficient phase-transfer catalysts for the solid base-promoted monoalkylation of diethyl malonate |
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| 作者姓名： | Hui Sun Juan Li Xiao Chen Cai Dong Jiang Li Yi Dai |
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| 作者单位： | Department of Chemistry, East China Normal University, Shanghai 200062, China |
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| 基金项目： | 教育部科学技术研究项目 |
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| 摘 要： | Ionic liquids （ILs） based on 1,3-dialkylimidazolium and tetraalkylammonium cations were employed as a series of efficient, environmentally benign phase-transfer catalysts （PTCs） for the base-promoted monoalkylation of diethyl malonate. The influence of various heterogeneous bases on yields was studied. Good yields and high selectivity were obtained. Solvent-free, mild reaction condition, short reaction time, and easy purification were the merits of this method. The catalytic system （IL-hase） could also be recycled after the extraction of products with ether.
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| 关 键 词： | 离子液体 相转移催化剂 固体碱 丙二酸二乙酯 单烷化反应 |
| 收稿时间： | 2006-10-13 |
Ionic liquids as efficient phase-transfer catalysts for the solid base-promoted monoalkylation of diethyl malonate |
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| Hui Sun Juan Li Xiao Chen Cai Dong Jiang Li Yi Dai.Ionic liquids as efficient phase-transfer catalysts for the solid base-promoted monoalkylation of diethyl malonate[J].Chinese Chemical Letters,2007,18(3):279-282. |
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| Authors: | Hui Sun Juan Li Xiao Chen Cai Dong Jiang Li Yi Dai |
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| Affiliation: | Department of Chemistry, East China Normal University, Shanghai 200062, China |
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| Abstract: | Ionic liquids (ILs) based on 1,3-dialkylimidazolium and tetraalkylammonium cations were employed as a series of efficient,environmentally benign phase-transfer catalysts (PTCs) for the base-promoted monoalkylation of diethyl malonate. The influence of various heterogeneous bases on yields was studied. Good yields and high selectivity were obtained. Solvent-free, mild reaction condition, short reaction time, and easy purification were the merits of this method. The catalytic system (IL-base) could also be recycled after the extraction of products with ether. |
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| Keywords: | Ionic liquids Phase-transfer catalysis Diethyl malonate Alkylation |
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