Palladium(0) nanoparticles-catalyzed ligand-free direct arylation of benzothiazole via C–H bond functionalization

Palladium nanoparticles, generated in situ efficiently catalyzes direct 2-C–H arylation of benzothiazole without requirement of any ligand. A wide range of substituted aryl and heteroaryl iodides participate in this reaction producing a series of 2-aryl/heteroaryl-benzothiazoles in high yields.