Optically active phenanthrolines in asymmetric catalysis. III. Highly efficient enantioselective transfer hydrogenation of acetophenone by chiral rhodium/3-alkyl phenanthroline catalysts.
A dicationic (N-N) bis-chelated Pd(II) complex containing the 3-alkyl-substituted 1, 10-phenanthroline 1 as the unique ligand provides exceptionally high productivities in CO/styrene copolymerization, giving a polymer of unprecedentedly high molecular weight.
[EN] PROCESSES AND INTERMEDIATES FOR THE PREPARATION OF OPTICALLY ACTIVE 3-AMINO-1-(2-THIENYL)-1-PROPANOL DERIVATIVES<br/>[FR] PROCEDES ET PRODUITS INTERMEDIAIRES POUR LA PREPARATION DE DERIVES DE 3-AMINO-1-(2-THIENYL)-1-PROPANOL OPTIQUEMENT ACTIFS
申请人:LONZA AG
公开号:WO2004031168A2
公开(公告)日:2004-04-15
Enantiomerically enriched 3-amino-1-(2-thienyl)-1-propanols of the formulae ((S)-I) or ((R)-I) wherein R1 and R2 independently denote H, C1-6-alkyl, C5-7-cycloalkyl, aralkyl or aryl, were prepared by reducing a 3-amino-1-(2-thienyl)-1-propanone of the formula (II) wherein R1 and R2 are defined as above, using a hydrogen donor in the presence of a metal catalyst, an optically active nitrogen-containing ligand and optionally a base.