期刊
ORGANIC LETTERS
卷 19, 期 2, 页码 332-335出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.6b03470
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-
资金
- National Natural Science Foundation of China [21432006, 21321061, 21372162]
Chiral N,N'-dioxide/Y(OTf)(3) and Sc(OTf)(3) complexes have been developed as efficient catalysts for the bisvinylogous Mukaiyama aldol reaction of silyl ketene acetal with alpha-ketoesters and aldehydes, respectively. The catalytic systems were highly epsilon-selective, and the substrate scope was wide. The corresponding epsilon-hydroxy-alpha,beta,gamma,delta-unsaturated esters were obtained in up to 95% yield and 98% ee.
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