Palladium-Catalyzed Ortho-Arylation of Benzamides via Direct sp<sup>2</sup>C–H Bond Activation
                                
                                    
                                        作者:Dan-Dan Li、Ting-Ting Yuan、Guan-Wu Wang                                    
                                    
                                        DOI:10.1021/jo300126n
                                    
                                    
                                        日期:2012.4.6
                                    
                                    The palladium-catalyzed ortho-arylation of benzamides by aryl iodides has been demonstrated with the simplest amide CONH2 as a directing group for the first time. This protocol can be applied to various benzamides and aryl iodides with both electron-donating and electron-withdrawing groups. In addition, the synthesized biphenyl-2-carboxamides can be further transformed to other biphenyl derivatives such as nitriles, carboxylic acids, carbamates, and amines.