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Chiral copper(II)-Schiff base complexes as catalysts for asymmetric cyclopropanation of styrene
Qiu, M; Liu, GS; Yao, XQ; Guo, MY; Pan, GZ; Zheng, Z
关键词Chiral Copper(Ii)-schiff Base Complex Asymmetric Catalysis Styrene Cyclopropanation
刊名CHINESE JOURNAL OF CATALYSIS
2001
22期:1页:77-80
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]ACIDS
英文摘要Twelve chiral copper (II)-Schiff base complexes, derived from (R)-(+)-2-amino-1,1-diaryl-1-propanol with substituted salicylaldehydes, were examined as a catalyst for asymmetric cyclopropanation of styrene with ethyl diazoacetate. It was found that the substituents at 3- and 5- positions of salicylaldehyde in the ligands had great effects on catalytic activity and enantioselectivity of the catalyst. The complex with strong electron-withdrawing group (NO2) at 5-position and the smallest stereo-hinder (H) at 3-position of salicytaidehyde showed highly catalytic activity and enantioselectivity, up to ee = 87.4% for trans and ee 82.8% for cis isomers respectively, and the ratio 39/61 of cis to trans isomers was obtained at 40 degreesC with 1,2-dichloroethane as solvent.
语种英语
WOS记录号WOS:000170358800021
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138905
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Qiu, M,Liu, GS,Yao, XQ,et al. Chiral copper(II)-Schiff base complexes as catalysts for asymmetric cyclopropanation of styrene[J]. CHINESE JOURNAL OF CATALYSIS,2001,22(1):77-80.
APA Qiu, M,Liu, GS,Yao, XQ,Guo, MY,Pan, GZ,&Zheng, Z.(2001).Chiral copper(II)-Schiff base complexes as catalysts for asymmetric cyclopropanation of styrene.CHINESE JOURNAL OF CATALYSIS,22(1),77-80.
MLA Qiu, M,et al."Chiral copper(II)-Schiff base complexes as catalysts for asymmetric cyclopropanation of styrene".CHINESE JOURNAL OF CATALYSIS 22.1(2001):77-80.
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