Bifunctionally Substituted Cobalt(II) Phthalocyanines with Benzoic Acid Fragments

Abstract

Phthalonitriles with fragments of 4-amino-, 4-hydroxy-, and 4-sulfanylphenylbenzoic acids were synthesized by nucleophilic substitution in 4-bromo-5-nitrophthalonitrile. A disubstituted phthalonitrile containing 1H-1,2,3-benzotriazole and p-hydroxybenzoic acid fragments was obtained by the substitution of the nitro group in 4-(4-carboxyphenoxy)-5-nitrophthalonitrile by a 1H-1,2,3-benzotriazol-1-yl group. The synthesized phthalocyanines were used as starting materials in the template synthesis of bifunctional cobalt phthalocyanines. Spectral properties of the latter products were studied.