The nickel/(S)-Binapine complex was found to be an efficient catalyst for asymmetric hydrogenation of β-acetylamino vinylsulfones to afford chiral β-Amido sulfones with excellent yields and enantioselectivities (up to 95% yields and >99% ee). This protocol has good compatibility with a series of substituted (Z)-β-acetylamino vinylsulfones or Z/E isomeric mixtures. A gram-scale reaction has also been
发现
镍/(S)-Binapine配合物是有效的催化剂,用于β-乙酰
氨基
乙烯基砜的不对称加氢,以优异的收率和对映选择性(高达95%收率和> 99%ee)提供手性β-酰胺基砜。该方案与一系列取代的(Z)-β-乙酰
氨基
乙烯基砜或Z / E异构体混合物具有良好的兼容性。在催化剂负载为0.2摩尔%的情况下,也已经实现了克级反应。