作者:Chen Cheng、John F. Hartwig                                    
                                    
                                        DOI:10.1021/ja511352u
                                    
                                    
                                        日期:2015.1.21
                                    
                                    A method for the iridium-catalyzed silylation of aryl C-H bonds is described. The reaction of HSiMe(OSiMe3)(2) with arenes and heteroarenes catalyzed by the combination of [Ir(cod)(OMe)](2) and 2,4,7-trimethylphenanthroline occurs with the aromatic compound as the limiting reagent and with high levels of sterically derived regioselectivity. This new catalytic system occurs with a much higher tolerance for functional groups than the previously reported rhodium-catalyzed silylation of aryl C-H bonds and occurs with a wide range of heteroarenes. The silylarene products are suitable for further transformations, such as oxidation, halogenation, and cross-coupling. Late-stage functionalization of complex pharmaceutical compounds was demonstrated.