Tautomerism in Novel Oxocorrologens (pages 9824–9833)
Yongshu Xie, Jonathan P. Hill, Amy Lea Schumacher, Paul A. Karr, Francis D'Souza, Christopher E. Anson, Annie K. Powell and Katsuhiko Ariga
Version of Record online: 19 OCT 2007 | DOI: 10.1002/chem.200701428
Corrole tautomers: A novel oxocorrole derivative exhibits three-way NH/OH tautomerism (see picture; key: blue= corrole N atom; green=porphyrinogen-like N atom; red=substituent O atom) under control by solvent polarity. This tautomerism can be modulated by alkylation at one of the oxocorrole macrocyclic nitrogen atoms to yield a well-defined and more easily controlled two-way NH/OH tautomerism.