Synthesis of a phthalocyanine derivative containing easily oxidised sterically-hindered phenolic substituents

Abstract

A novel phthalocyanine containing four redox-active 3,5-di-tert-butyl-4-hydroxyphenyl substituents is readily oxidised in aerated, basified solution to give a complex product mixture; the oxidation is apparently localised on the phenolic moieties without disturbing the structure of the phthalocyanine core.