Facile syntheses of quater-, penta-, and sexipyrroles.
alpha,alpha-Linked oligopyrroles are attractive precursors for both expanded porphyrin and conducting polymer chemistry. We demonstrate facile methods for synthesizing quater-, penta-, and sexipyrroles from more readily available bi- and terpyrrole intermediates. These products demonstrate stability in their brightly colored oxidized forms, while reduction using borohydride reagents gives the corresponding all-pyrrole oligomers, which oxidize readily in air. The oxidized quater- and sexipyrroles were characterized by single-crystal X-ray diffraction analysis.
Sessler
Jonathan L
JL
Department of Chemistry and Biochemistry, Institute for Cellular and Molecular Biology, The University of Texas, Austin, 78712-0165, USA. sessler@mail.utexas.edu
Aguilar
Apolonio
A
Sanchez-Garcia
David
D
Seidel
Daniel
D
Köhler
Thomas
T
Arp
Forrest
F
Lynch
Vincent M
VM