Chemoselective and Regiospecific Formylation of 1-Phenyl-1<i>H</i>-pyrazoles Through the Duff Reaction
                                
                                    
                                        作者:C. H. A. de Oliveira、L. M. Mairink、F. Pazini、L. M. Lião、A. L. de Oliveira、C. Viegas、V. de Oliveira、L. C. Cunha、F. G. F. Oliveira、J. L. Paz、M. N. Eberlin、Ricardo Menegatti                                    
                                    
                                        DOI:10.1080/00397911.2012.657764
                                    
                                    
                                        日期:2013.6.18
                                    
                                    The synthesis of formylated 1-phenyl-1H-pyrazole derivatives under the Duff reaction conditions is reported. Our results indicate that 1-phenyl-1H-pyrazole systems containing electron-withdrawing and electron-donating substituents at the phenyl moiety react under the Duff reaction conditions to furnish formylated derivatives in good yields.