C5’‐Nitrated Cinchona Catalysts for Asymmetric Michael Addition Reaction

C5’‐Nitrated Cinchona Catalysts for Asymmetric Michael Addition Reaction 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 SYNTHESES IN THE CINCHONA SERIES. IV.² NITRO- AND AMINO-DERIVATIVES OF THE DIHYDRO ALKALOIDS. Regio‐ and Stereoselective Synthesis of Benzoquinolizidines Chiral Vicinal Diamines Derived from Mefloquine Non‐Biaryl Atropisomers in Organocatalysis Synthesis of 10,11-DidehydroCinchona Alkaloids and Key Derivatives Synthesis and antitubercular evaluation of novel substituted aryl and thiophenyl tethered dihydro-6H-quinolin-5-ones New Mono‐Quarternized Bis‐Cinchona Alkaloid Ligands for Asymmetric Dihydroxylation of Olefins in Aqueous Medium: Unprecedented High Enantioselectivity and Recyclability