3,7-Diiodo-2,6-di(thiophen-2-yl)benzo[1,2-b:4,5-b′]difurans are efficiently prepared by an iodine-promoted double cyclization. This new heterocyclic core is readily modified by the attachment of alkyl chains for improved solubility. The use of these compounds for the synthesis of new conjugated polymers is also reported.
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