Asymmetric organocatalytic Michael addition of Meldrum’s acid to nitroalkenes: probing the mechanism of bifunctional thiourea organocatalysts
作者:Ari M.P. Koskinen、Antti O. Kataja
DOI:10.3998/ark.5550190.0011.216
日期:——
The asymmetric Michael addition of Meldrum’s acid to nitroalkenes was studied using a novel type of Cinchona alkaloid-based bifunctional thiourea organocatalyst. The functionality of the thiourea catalysts was also probed by preparing and testing thiourea-N-methylated analogues of the well-known bis-(3,5-trifluoromethyl)phenyl-substituted catalyst.
使用一种新型的基于金鸡纳生物碱的双功能硫脲有机催化剂,研究了 Meldrum 酸与硝基烯烃的不对称迈克尔加成。硫脲催化剂的功能性也通过制备和测试众所周知的双-(3,5-三氟甲基)苯基取代催化剂的硫脲-N-甲基化类似物来探查。