Synthesis of Polyfunctional Aromatic Imines with Zwitterionic Character
Abstract
Polyfunctional aromatic imines with a zwitterionic character involving sulfonic acid and N,N-dimethylamino functionalities are synthesized by oxidative condensation of 5-aminonaphthalene-2-sulfonic acid (Cleve's β-acid) and N,N-dimethyl-p-phenylenediamine.