Optically active ‘adjacent’ type non-centrosymmetrically substituted phthalocyanines

Abstract

Optically active ‘adjacent’ type non-centrosymmetrically substituted phthalocyanines (Pcs) and benzo-substituted Pcs having π-systems with C_2v symmetry have been synthesized in high yields in a mixed condensation using bisphthalonitriles (which do not racemize under general Pc formation conditions) and a second phthalonitrile, and characterized by UV–VIS, natural and magnetic circular dichroism spectroscopy.