非对映体
对映选择合成
化学
环丙烷
环加成
产量(工程)
有机化学
光学活性
催化作用
组合化学
立体化学
戒指(化学)
材料科学
冶金
作者
Wen‐Ke Li,Ze‐Shui Liu,Long He,Tai‐Ran Kang,Quan‐Zhong Liu
标识
DOI:10.1002/ajoc.201402219
摘要
Abstract Palladium‐catalyzed enantioselective cycloaddition of vinyl cyclopropane dicarbonitriles and nitroolefins was achieved to generate structurally and optically enriched nitrocyclopentanes with three consecutive chiral carbon centers in up to 96 % yield and with up to 92 % ee . The two diastereoisomers produced in each reaction are readily separable by simple chromatography. The present method allows the preparation of both diastereoisomers in optically enriched form.
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