Bridged dithienylethylenes as precursors of small bandgap electrogenerated conjugated polymers

P Blanchard, H Brisset, B Illien, A Riou…

Index: Blanchard, Philippe; Brisset, Hugues; Illien, Bertrand; Riou, Amedee; Roncali, Jean Journal of Organic Chemistry, 1997 , vol. 62, # 8 p. 2401 - 2408

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Citation Number: 60

Abstract

Bridged dithienylethylenes (DTEs) bearing solubilizing alkyl chains at various positions (2-5) have been synthesized by McMurry dimerization of cyclopenta [b] thiophen-6-ones. In order to introduce alkyl substituents at different positions of the DTE molecule, the precursor ketones have been prepared by different strategies based on a combination of Mannich or Wittig-Horner reaction and Friedel-Craft intramolecular cyclization. The position and the ...