Cinchona alkaloid derived primary amine thioureas organocatalyzed Michael addition of nitroalkanes to enones in good yield and up to 98% ee and offered a new way to construct quaternary stereocenters from enones and nitroalkanes.
金鸡纳
生物碱衍生的一级胺
硫脲有机催化剂在硝基烷与烯酮的迈克尔加成反应中,产率高,最高可达到98%的立体选择性,并且为从烯酮和硝基烷构建季碳立体中心提供了一种新方法。