Stepwise Fusion of Porphyrin β,β′-Pyrrolic Positions to Imidazole Rings

A strategy for the stepwise annulation of pyrrolic rings of a porphyrin to imidazole rings is presented. Mono(imidazole), Janus and corner bis(imidazole), T-shaped tris(imidazole), and tetrakis(imidazole) porphyrins have been synthesized and characterized.本文报道了一种将卟啉（porphyrin）的吡咯环逐步环化为咪唑环的策略。现已合成并表征了单（咪唑）卟啉、双面型（Janus）隅位双（咪唑）卟啉、T型三（咪唑）卟啉与四（咪唑）卟啉。