An intramolecular C−H amination for the synthesis of carbazoles with a Pd(II)/TBPB system has been developed. This catalytic amination process forms the carbazole products in good to excellent yields. It is noteworthy that this method implied the advantages of the catalytic mode involving perester with transition metal catalyst in the activation of inert C−H bonds. In addition, the transformation performs well using water as solvent.

A palladium-catalyzed intermolecular oxidative CÀ O bond formation for alkenyl CÀ H benzoxylation of benzofurans has been developed. This catalytic process utilizes perester as both the benzoxylate reagent and the oxidant to form the products in good to excellent yields under room temperature. A plausible mechanism was proposed based on the experimental data and mechanistic studies. It is noteworthy that this transformation performs well when using water as the only solvent.

A copper-catalyzed direct CÀ H bond C5-amidation of 8amidoquinolines with NFSI has been developed. This catalytic amination process is carried out without any ligands to form various derivatives in moderate to excellent yields using a commercially available Cu(II) as the catalyst under a simple condition. A single-electron transfer (SET)-mediated mechanism was proposed based on the experimental data and a serious of mechanistic studies.