Asymmetric synthesis of α-amino acids using polymer-supported Cinchona alkaloid-derived ammonium salts as chiral phase-transfer catalysts

New dimeric anthracenyl-derived Cinchona quaternary ammonium salts as phase-transfer catalysts for the asymmetric synthesis of α-amino acids

Polystyrene‐Anchored Cinchona Ammonium Salts: Easily Recoverable Phase‐Transfer Catalysts for the Asymmetric Synthesis of α‐Amino Acids

Influence of hydroxyapatite granule size, porosity, and crystallinity on tissue reactionin vivo. Part A: synthesis, characterization of the materials, andSEManalysis

Comparison of three hydroxyapatite/β‐tricalcium phosphate/collagen ceramic scaffolds: Anin vivostudy

Unexpected metal base-dependent inversion of the enantioselectivity in the asymmetric synthesis of α-amino acids using phase-transfer catalysts derived from cinchonidine