Octakis(1 naphthylmethylthio) substituted porphyrazine derivatives

Abstract

Magnesium porphyrazinate substituted with eight (1-naphthylmethylthio)groups on the peripheral positions has been synthesized by cyclotetramerization of 1,2-bis(1-naphthylmethylthio)maleonitrile in the presence of magnesium butanolate. The metal-free derivative was obtained by its treatment with trifluoroacetic acid and further reaction of this product with copper(II) acetate, zinc(II) acetate and cobalt(II) acetate led to the metal porphyrazinates (M=Cu, Zn, Co). These new compounds have been characterized by elemental analysis, together with FT-IR, H-1 NMR, UV-Vis and EPR spectral data. (C) 2004 Elsevier Ltd. All rights reserved.