A New Trimeric Cinchona Alkaloid as a Chiral Phase-Transfer Catalyst for the Synthesis of Asymmetric α-Amino Acids

A New Trimeric Cinchona Alkaloid as a Chiral Phase-Transfer Catalyst for the Synthesis of Asymmetric α-Amino Acids 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. Discovery and Application of Doubly Quaternized Cinchona‐Alkaloid‐Based Phase‐Transfer Catalysts Enantioselective formation of cyclopropane spiroindenes from benzofulvenes by phase transfer catalysis Synthesis of an advanced precursor of Rivastigmine: Cinchona -derived quaternary ammonium salts as organocatalysts for stereoselective imine reductions Crystal structures of anhydrous and hydrated N-benzylcinchonidinium bromide Design and Synthesis of Novel C2-symmetric bis-cinchona Alkaloid Derivatives Highly enantioselective Michael addition of 3-arylthio- and 3-alkylthiooxindoles to nitroolefins catalyzed by a simple cinchona alkaloid derived phosphoramide New Polymer Supported Cinchona Alkaloids for Heterogeneous Catalytic Asymmetric Dihydroxylation of Olefins Asymmetric α‐Hydroxylation of β‐Indanone Esters and β‐Indanone Amides Catalyzed by C‐2′ Substituted Cinchona Alkaloid Derivatives