Synthesis of new serine-based phosphinooxazoline ligands and iridium complexes for asymmetric hydrogenations
                                
                                    
                                        作者:Axel Franzke、Felix Voss、Andreas Pfaltz                                    
                                    
                                        DOI:10.1016/j.tet.2011.02.021
                                    
                                    
                                        日期:2011.6
                                    
                                    A series of serine-based phosphinooxazoline ligands was synthesized and the corresponding iridum complexes were successfully applied in the asymmetric hydrogenation of various unfunctionalized olefines and acetophenone-N-phenyl-imine. The results show that these new derivatives are useful substitutes for the standard tert-leucine-derived PHOX ligands. (C) 2011 Elsevier Ltd. All rights reserved.