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.1 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.