A series of chiral pyrrolidinyl-sulfamide derivatives have been identified as efficient bifunctional organocatalysts for the direct Michael addition of cyclohexanone to a wide range of nitroalkenes. The desired Michael adducts were obtained in high chemical yields and excellent stereoselectivities (up to 99/1 dr and 95% ee).
一系列手性
吡咯烷基-磺酰胺衍
生物被鉴定为高效的双功能有机催化剂,用于
环己酮与广泛的硝基烯烃的直接迈克尔加成。所需的迈克尔加合物以高
化学收率和优异的立体选择性(高达99/1的立体异构体比和95%的对映体过量)获得。