3-Alkoxy-4-bromothiophenes: general synthesis of monomers and regio-selective preparation of two dimers

3-Alkoxy-4-bromothiophenes were synthesized in three steps from the readily available methyl 2-carboxylate-3-hydroxythiophene and two isomers of bithiophenes based on the 3-bromo-4-methoxythiophene moiety were regio-selectively prepared.

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