A coordination driven supramolecular Pd2L4 self-assembly as heterogeneous catalyst for Buchwald–Hartwig amination reaction

Abstract

A Pd2L4 type supramolecular coordination driven self assembly was constructed using a dipodal pyridyl terminal ligand L [L=N2,N6-dimethyl-N2,N6-bis((pyridin-4-yl)methyl)naphthalene-2,6-dicarboxamide] and palladium nitrate. The self-assembly was fully characterized by 1D and 2D NMR, ESI-MS, IR, TGA, HR-TEM and elemental analysis. The geometry optimization was performed using the Hartree–Fock method. The assembly acts as an efficient, reusable, heterogeneous catalyst for Buchwald–Hartwig amination reaction in toluene under phosphine free condition and aerobic medium.