引用本文:
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.
doi:
10.1016/j.cclet.2007.01.028
Citation: 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. doi: 10.1016/j.cclet.2007.01.028
Citation: 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. doi: 10.1016/j.cclet.2007.01.028
Ionic liquids as efficient phase-transfer catalysts for the solid base-promoted monoalkylation of diethyl malonate
摘要:
Ionic liquids (ILs) based on 1,3-dialkylimidazolium and teraalkylammonium 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.
English
Ionic liquids as efficient phase-transfer catalysts for the solid base-promoted monoalkylation of diethyl malonate
Abstract:
Ionic liquids (ILs) based on 1,3-dialkylimidazolium and teraalkylammonium 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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Key words:
- Ionic liquids
- / Phase-transfer catalysis
- / Diethyl malonate
- / Alkylation
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