Pyrrolidinyl-sulfamide derivatives as a new class of bifunctional organocatalysts for direct asymmetric Michael addition of cyclohexanone to nitroalkenes
作者:Jia-Rong Chen、Liang Fu、You-Quan Zou、Ning-Jie Chang、Jian Rong、Wen-Jing Xiao
DOI:10.1039/c1ob05442b
日期:——
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。