Convenient route to core-modified corroles by acid-catalyzed condensation of furylpyrromethanes and dipyrromethanes

초록

Corroles and oxacorroles were synthesized by acid-catalyzed, 2+2 condensation. The condensation afforded different corroles bearing core- heteroatoms at the predesignated locations. Regioselective α-α' linkage between pyrrole and furan or between pyrrole and pyrrole was achieved by keeping the linking carbon at different position of starting dipyrromethanes. The condensation was only fruitful when furan-containing dipyrromethanes were condensed.