Highly Diastereoselective Addition of Lithio Vinyl Sulfoxides to <i>N</i>-Sulfinimines: An Entry to Enantiopure 3-Sulfinyl-2,5-<i>cis</i>-dihydropyrroles
                                
                                    
                                        作者:Alma Viso、Roberto Fernández de la Pradilla、Mercedes Ureña、Ignacio Colomer                                    
                                    
                                        DOI:10.1021/ol801878f
                                    
                                    
                                        日期:2008.11.6
                                    
                                    The addition of enantiopure alpha-metalated vinyl and dienyl sulfoxides to enantiomerically pure N-sulfinimines takes place with high diastereoselectivity primarily directed by the N-sulfinimine sulfur. The resulting allylic amines have been further transformed into highly functionalized 3-sulfinyl and 3-sulfonyl 2,5-cis-dihydropyrroles by reaction with electrophiles.