The First Example of Oxiranyllithium and Oxiranyl Grignard Reagent Having a Carbanion Destabilizing Group: Generation, Property, and Some Synthetic Uses
                                
                                    
                                        作者:T Satoh                                    
                                    
                                        DOI:10.1016/00404-0399(50)1714s-
                                    
                                    
                                        日期:1995.11.6
                                    
                                    The first generation of destabilized oxiranyllithium and oxiranyl Grignard reagent from sulfinyloxiranes with t-BuLi or EtMgCl is described. Treatment of alpha-methyl alpha,beta-epoxy sulfoxide (sulfinyloxirane) with t-BuLi in THF at -100 degrees C gave oxiranyllithium having a carbanion destabilizing group. The oxiranyllithium reacted with several electrophiles to give new epoxides in good yields. Oxiranyl Grignard reagent could be generated by the reaction of the sulfinyloxirane having at least one aromatic group an its beta-position with EtMgCl.