4-Substituted and 4,5-disubstituted 3,6-Di(2-pyridyl)pyridazines: Ligands for supramolecular assemblies

The syntheses by inverse electron demand Diels-Alder reactions and characterization of 28 members of a family of 3,6-di(2-pyridyl)pyridazines, functionalized in the 4- or 4,5-positions are reported. Single crystal structural data are presented for four representative derivatives.