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 asymmetricMichaeladdition of Meldrum’sacid to nitroalkenes was studied using a novel type of Cinchona alkaloid-based bifunctionalthioureaorganocatalyst. 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.