Ethyl (tributylstannyl)acetate: A versatile reagent for the carboethoxymethylation of functionalized pyridines
                                
                                    
                                        作者:T.G.Murali Dhar、Charles Gluchowski                                    
                                    
                                        DOI:10.1016/s0040-4039(00)79946-1
                                    
                                    
                                        日期:1994.2
                                    
                                    Ethyl (tributylstannyl)acetate adds chemoselectively to acylpyridinium salts to yield a variety of dihydropyridines with diverse functional groups. These compounds are useful precursors for the preparation of a variety of N-heterocycles. The regiochemistry of the reaction is addressed and the results are rationalized based on the HSAB principle.