The synthesis and characterization of new meso-substituted and β-substituted unsymmetrical metallorphyrins has been described. A new modified Alder method was used for the synthesis of unsymmetrical porphyrins. Reaction of these unsymmetrical porphyrins with metal chlorides and nitrates afforded the corresponding metalloporphyrins in high yields with excellent purity. These porphyrins and their metal derivatives were characterized by spectroscopic methods.
Meso-functionalization, Unsymmetrical metalloporphyrins, Metal ligand interaction