Stereocontrolled addition of Grignard reagents to α-alkoxy nitrones. Synthesis of syn and anti 3-amino-1,2-diols
                                
                                    
                                        作者:Pedro Merino、Elena Castillo、Francisco L Merchan、Tomas Tejero                                    
                                    
                                        DOI:10.1016/s0957-4166(97)00175-4
                                    
                                    
                                        日期:1997.6
                                    
                                    The stereoselective addition of Grignard reagents to alpha-alkoxy nitrones has been achieved with excellent stereocontrol using ZnBr2 and Et2AlCl as precomplexing agents to obtain the corresponding syn- and anti- adducts, respectively. The obtained hydroxylamines have been transformed into valuable 3-amino-1,2-diols. (C) 1997 Elsevier Science Ltd.