Expanded Porphyrins: More Confusion All the Time†
Support from the National Science Foundation (140188) is gratefully acknowledged.
Graphical Abstract
Confusion leads to cooperative reactivity: Oxidative ring-closure reactions of oligopyrranes containing two terminal confused pyrroles yield expanded porphyrinoids, which show cooperative reactivity between the directly linked confused pyrroles. These transformations constitute a new method for the synthesis of novel porphyrinoids with unconventional pyrrole linking modes and unique properties.