Optimization of enantiocontrol in cis-selective cyclopropanation reactions catalyzed by dirhodium(II) tetrakis[alkyl 2-oxaazetidine-4(S)-carboxylates]

被引:45
作者
Doyle, MP [1 ]
Davies, SB [1 ]
Hu, WH [1 ]
机构
[1] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA
关键词
D O I
10.1039/b001464h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Both intermolecular and macrocyclic intramolecular cyclopropanation reactions occur with greater selectivity for the cis-(Z)-diastereoisomer than for the trans-(E)-diastereomer in reactions catalyzed by chiral dirhodium(ii) azetidinone-carboxylates; the influence of the catalyst's ester alkyl group on enantiocontrol is substantial but appears to be delicately balanced by steric factors.
引用
收藏
页码:867 / 868
页数:2
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