Abstract Bi-or polydentate ligands based on heterocycles can be easily prepared by palladium-catalysed C–H bond activation of heteroaromatics followed by heteroarylation with heteroaryl bromides. A variety of heteroaromatics such as furans, thiophenes, pyridines, thiazoles or oxazole derivatives have been employed and moderate to good yields were generally obtained using the air-stable complex [PdCl (dppb)(C 3 H 5)] as catalyst. A ...