Synthesis of 5‐Alkyl[3,4‐<i>c</i>]thienopyrrole‐4,6‐dione‐Based Polymers by Direct Heteroarylation

Abstract

Don't stand Stille: A direct heteroarylation polycondensation reaction was used for the synthesis of high-molecular-weight thienopyrroledione-based polymers (see scheme) in an impressive yield (up to 96 %) and in only a few synthetic steps. This new method is an alternative to the standard Stille coupling reaction and thus avoids formation of toxic tin by-products.