The synthesis and characterization of novel porphyrazines containing 5H-dibenz[b,f]azepine units

The synthesis of novel metal-free (H2Pz) and metalloporphyrazines (MgPz), peripherally substituted with eight 5H-dibenz[b,f]azepine was performed by the cyclotetramerization of 1,5-bis(dibenz[b,f]azepinepropylthio)maleonitrile which was synthesized from 5H-dibenz[b,f]azepine and 1,10-diiodo-5,6-dicyano-4,7-dithia-5-decene. The new compounds were characterized by elemental analysis, 1H NMR, 13C NMR, IR, UV–vis and mass spectral data.