The past decade has seen the increasing reports of C-H bond activation and functionalization of compound via C-H bond activation, which would obviate the additional steps and limitations associated with the perfunctionalization substrates in the catalytic coupling process. We envisage that addition of AlMe₃ would act cooperatively in tandem fashion with nickel to invoke a new selectivity in pyridine and heteroarenes with the help of ligand NHC. In addition, we describe the development of a reactivity strategy for Ni-catalyzed heteroaromatic C-H bond functionalization based on using chemical switch like AlMe₃ that selectively generates linear or branched adducts.