Synthesis of novel porphyrin chromophores from nitroarenes: Further applications of the Barton-Zard pyrrole condensation

Abstract

Porphyrins with fused nitronaphthalene and benzothiadiazole subunits have been synthesized by the “2 + 2” and “3 + 1” methodologies; the key pyrrolic intermediates were prepared by the base catalyzed condensation of dinitronaphthalenes or 4-nitro-2,1,3-benzothiadiazole with isocyanoacetates.