Highly enantioselective Michael addition of 3-arylthio- and 3-alkylthiooxindoles to nitroolefins catalyzed by a simple cinchona alkaloid derived phosphoramide

Highly enantioselective Michael addition of 3-arylthio- and 3-alkylthiooxindoles to nitroolefins catalyzed by a simple cinchona alkaloid derived phosphoramide A novel C-5′ substituted cinchona alkaloid-derived catalyst promotes additions of alkyl thiols to nitroolefins with excellent enantioselectivity Novel Selenoureas Based on Cinchona Alkaloid Skeleton: Synthesis and Catalytic Investigations Non‐Biaryl Atropisomers in Organocatalysis Cinchona Alkaloid Derived Iodide Catalyzed Enantioselective Oxidative α-Amination of Carbonyl Compounds toward the Construction of Spiroindolyloxindole Highly Enantioselective and Practical Cinchona-Derived Phase-Transfer Catalysts for the Synthesis of α-Amino Acids This work was supported by grants from Aminogen Co. (Korea) through the Research Center of New Drug Development of Seoul National University and the Research Institute of Pharmaceutical Sciences in the College of Pharmacy of Seoul National University. C5’‐Nitrated Cinchona Catalysts for Asymmetric Michael Addition Reaction Functional polymers. 9. Asymmetric catalysis by new cinchona alkaloid derivatives. Effect of C(3) substituent on asymmetric induction Enantioselective formation of cyclopropane spiroindenes from benzofulvenes by phase transfer catalysis Efficacy of Selenourea Organocatalysts in Asymmetric Michael Reactions under Standard and Solvent-Free Conditions