Unsymmetrical Imidazopyrimidine-Based Ligand and Bimetallic Complexes.

With bimetallic catalysts becoming increasingly important, the development of electronically and structurally diverse binucleating ligands is desired. This work describes the synthesis of unsymmetric ligand 2,7-di(pyridin-2-yl)imidazo[1,2-]pyrimidine () that is achieved in four steps on a multigram scale in an overall 54% yield. The ability of to act as a scaffold for the formation of bimetallic complexes is demonstrated with the one-step syntheses of the dicopper complex [Cu()(μ-OH)(CFCOO)] (), the dipalladium complex [Pd()(μ-OH)(CFCOO)](CFCOO)·CFCOOH (), and the dimeric dinickel complex [Ni()(μ-Cl)ClMeOH][2Cl] () in good yields (79-92%).