Palladium-catalyzed coupling reactions towards the synthesis of well-defined thiophene-oligomers |
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| Authors: | Jwanro Hassan Emmanuelle Schulz |
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| Affiliation: | a Laboratoire de Catalyse et Synthèse Organique, UMR 5622, UCBL, CPE, 43, Bd du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
b Laboratoire de Catalyse Moléculaire, UMR 8075, ICMMO, Université Paris-Sud, bâtiment 420, 91405 Orsay Cedex, France |
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| Abstract: | Heck- and Ullmann-type palladium-catalyzed reactions were used in order to perform the synthesis of 3′,4″-dioctyl-2,2′,5′2″,5″,2′″-tetrathienyl. The desired oligothiophene was synthesized in five steps with a total yield of 38% by a Heck-type reaction of bromo-derivatives and a yield of 45% by an Ullmann-type reaction of iodo-precursors. |
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| Keywords: | Heck-type and Ullmann-type reactions Regioregular oligothiophenes Thiophene Palladium acetate |
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