Toward Improving the Chemistry of <i>N</i>-Acyliminium Ions:  Nucleophilic Substitution Reactions of Pyrrolidinone Derivatives with Trialkylsilyl Nucleophiles Catalyzed by Triisopropylsilyltrifluoromethane Sulfonate (TIPSOTf)
                                
                                    
                                        作者:Raja Ben Othman、Till Bousquet、Anthony Fousse、Mohamed Othman、Vincent Dalla                                    
                                    
                                        DOI:10.1021/ol050576z
                                    
                                    
                                        日期:2005.7.1
                                    
                                    Nucleophilic substitution reactions of racemic and chiral 5-acetoxy-, 5-ethoxy-, and 5-methoxypyrrolidin-2-ones by silicon-based nucleophiles were efficiently catalyzed by TIPSOTf. This process was found to be general and accommodates a broad range of substrate-nucleophile combinations.