期刊
CHEMICAL SCIENCE
卷 3, 期 3, 页码 842-845出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sc00678a
关键词
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资金
- NEXT
- Nagoya University
- MEXT
- Ogasawara Foundation for the Promotion of Science Engineering
- Asahi Glass Foundation
- Takeda Science Foundation
- JSPS
Highly enantioselective conjugate addition of 2-unsubstituted azlactone 3 to various nitroolefins 4 was accomplished by the selective utilization of supramolecularly assembled, chiral tetraaminophosphonium aryloxide-arylhydroxide 1a.[2a](2) as a requisite catalyst. The key to this achievement is the polarity dependence of the molecular associations of type 1.[2](n) and the crucial role of the proximal arylhydroxide 2 as a proton donor. The present method offers an attractive route to various optically active amino carbonyl compounds including beta(2)-amino acids.
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