Enantioselective hydrogenation of α-ketoesters catalyzed by cinchona alkaloid stabilized Rh nanoparticles in ionic liquid

被引：3
作者：
Jiang, He-yan [1 ]
Xu, Jie [1 ]
Sun, Bin [1 ]
机构：
[1] Chongqing Technol & Business Univ, Coll Environm & Resources, Chongqing Key Lab Catalysis & New Environm Mat, Key Lab Catalysis Sci & Technol Chongqing Educ Co, Chongqing 400067, Peoples R China
来源：
CHIRALITY | 2019年 / 31卷 / 10期
基金：
中国国家自然科学基金;
关键词：
cinchona alkaloid; enantioselective hydrogenation; ionic liquid; rhodium; alpha-ketoester; TRANSITION-METAL NANOPARTICLES; SELECTIVE HYDROGENATION; AROMATIC KETONES; ASYMMETRIC HYDROGENATION; EFFICIENT CATALYSTS;
D O I：
10.1002/chir.23107
中图分类号：
R914 [药物化学];
学科分类号：
100701 ;
摘要：
The heterogeneous enantioselective hydrogenation of alpha-ketoesters catalyzed by rhodium nanoparticles (Rh NPs) in ionic liquid was studied with the stabilization and modification of cinchona alkaloids. TEM characterization showed that well-dispersed Rh NPs of about 1.96 nm were obtained in ionic liquid. The results showed that cinchona alkaloids not only had good enantiodifferentiating ability but also accelerated the catalytic reaction. Under the optimum reaction conditions, the enantiomeric excess in ethyl benzoylformate hydrogenation could reach as high as 60.9%.
引用
收藏
页码：818 / 823
页数：6
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