Cu(I)-binaphthyldiimine catalyzed asymmetric cyclopropanation of olefin with diazoacetate

被引：0
|
作者：
Suga, H [1 ]
Fudo, T [1 ]
Ibata, T [1 ]
机构：
[1] Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 560, Japan
来源：
SYNLETT | 1998年 / 08期
关键词：
asymmetric cyclopropanation; enantioselective synthesis; chiral copper catalyst; carbenoid; diazoacetate;
D O I：
暂无
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Chiral 1,1'-binaphthyl-N,N'-bis(2,6-dichloro-benzy-lidene)-2,2'-diamine (1) was found to be an effective ligand for the copper-catalyzed enantioselective cyclopropanation of olefin with l-menthyl diazoacetate. For example, the reaction of 1,1-diphenylethylene with l-menthyl diazoacetate in the presence of CuOTf-1 complex in CH2Cl2 at - 40 degrees C gave the corresponding cyclopropanecarboxylate in 98% ee.
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收藏
页码：933 / +
页数：4
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