Thioureas: new ligands for the metal catalyzed asymmetric reduction of carbonyl compounds
摘要:
The catalytic enantioselective hydride transfer reduction of prochiral ketones using differently substituted mono and dithioureas with several catalyst precursors is reported. The best results are obtained with a ruthenium complex and a C-2 symmetric ligand. (C) 1997 Elsevier Science Ltd.