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. 2003 Jun 11;125(23):6872-3.
doi: 10.1021/ja035089y.

Formation and properties of cyclo[6]pyrrole and cyclo[7]pyrrole

Thomas Köhler  1 , Daniel Seidel, Vincent Lynch, Forrest O Arp, Zhongping Ou, Karl M Kadish, Jonathan L Sessler
Affiliations

Formation and properties of cyclo[6]pyrrole and cyclo[7]pyrrole

Thomas Köhler et al. J Am Chem Soc. .

Abstract

Oxidative coupling of a tetraalkylbipyrrole under FeIII-mediated coupling conditions in the presence of HCl results in a mixture of cyclo[6]- and cyclo[7]pyrroles, as well as the known cyclo[8]pyrrole. This "matched set" of heteroannulenes was analyzed by spectroscopic, electrochemical, and X-ray diffraction methods.

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