SEARCH Articles Figures Tables A Hydrogen Bonded to an sp Carbon Is Acidic A-Amino acids asymmetric hydrogenation A-Hydroxy acids asymmetric hydrogenation A-amino acids asymmetrical hydrogenation Acid A substance that produces hydrogen Acid A substance that produces hydrogen ions Acid-Catalyzed Hydrogen Exchange as a Quantitative Measure of Reactivity Acidity of a-Hydrogens the Enolate Anion Acidity of a-hydrogen atoms enolate formation Acidity of a-hydrogen atoms enolate ion formation Acidity of a-hydrogens Asymmetric Catalytic Hydrogenation of a-Acetamidocinnamic Acid Esters Asymmetric hydrogenation of a-acetamido cinnamic acid Asymmetric hydrogenation of vinylphosphonic acids carrying a phenyl substituent at Cinnamic acid, a-acetylaminoasymmetric hydrogenation Cinnamic acid, a-acetylaminoasymmetric hydrogenation homogeneous catalysis Cinnamic acid, a-acylaminoasymmetric hydrogenation Cinnamic acid, a-acylaminoasymmetric hydrogenation rhodium complexes Enantioselective Hydrogenation of a,P-Unsaturated Acids or Esters Glutaric acid, a-ketodiethyl ester, oxime acetate hydrogenation Glyoxylic acid, a-naphthylmenthyl ester asymmetric hydrogenation Hydrogenation of Dehydro-a-Amino Acids and Enamides Hydrogenation of a, p-unsaturated acids Metal-free reduction of imines enantioselective Br0nsted acid-catalyzed transfer hydrogenation using chiral BINOL-phosphates as catalysts Reduction, by hydrogen and Raney of a hydroxylamino acid to an amino The Acidity of an a-Hydrogen