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Free energy relationship (FER) studies to correlate steric parameters with the enantiocatalytic performance of bifunctional tertiary‐amine hydrogen‐bonding catalysts, including (S,S)‐cyclohexane‐1,2‐diamine‐derived thioureas, Cinchona alkaloid derived thioureas, and (S,S)‐cyclohexane‐1,2‐diamine‐derived squaramides, in Michael reactions revealed that the reactions are much favored by catalysts with...
Organocatalysis and aqueous reactions are identified as the focus of the greening of chemistry. Combining these two strategies effectively remains an interesting challenge in organic synthesis. Herein, we used pyrrolidine‐based benzoylthiourea 1c to catalyze the asymmetric Michael addition of cyclohexanone to various nitroolefins in water to afford the corresponding compounds in moderate to good yields,...
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