A novel and facile Zn-mediated intramolecular five-membered cyclization of beta-tetraarylporphyrin radicals from beta-bromotetraarylporphyrins

摘要

A novel and facile method for the Zn-mediated intramolecular cyclization of beta-porphyrin radicals has been developed for the convenient and effective construction of newly fused five-membered porphyrin systems from readily available beta-bromo-tetraarylporphyrins.Porphyrins,by the nature of their electronic and redox properties,play a key role in many fields,such as oxygen activation and transfer,electron transfer,binding or transport of small molecules,light harvesting,and photosynthesis.