Jp. Parakka et Mp. Cava, FURAN-CONTAINING AND PYRROLE-CONTAINING ANALOGS OF ALPHA-QUINQUETHIOPHENE - SPECTROSCOPIC AND ELECTROCHEMICAL PROPERTIES, Synthetic metals, 68(3), 1995, pp. 275-279
A series of pentacyclic analogs of alpha-quinquethiophene containing o
ne or two furan or pyrrole units has been synthesized. The synthesis i
s based on the cyanide-catalyzed Stetter reaction, providing the keton
ic precursors to the pentacycles. Spectral and electrochemical investi
gations show that the redox-stable mixed pentacycles display hypsochro
mic shifts in their absorption maxima, as well as a greater ease of ox
idation, in comparison to alpha-quinquethiophene.