5,15-diaminotetrabenzoporphyrins: Synthesis and spectral properties

A zinc complex of 5,15-di(N-phthalimidyl)tetrabenzoporphyrin was obtained by the reaction of Ncarboxymethylphthalimide with 1-oxo-1H-3-(1-oxoisoindolin-3-ylidenemethyl)isoindole and zinc oxide. The complex demetallation affords 5,15-di(N-phthalimidyl)tetrabenzoporphyrin. The reaction of N-phthalimidylsubstituted tetrabenzoporphyrins with hydrazine hydrate leads to the formation of 5,15-diaminotetrabenzoporphyrins. Spectral properties of these compounds were studied.