The palladium-catalysed coupling of benzenesulfonyl chlorides with thiophene derivatives allows regioselective access to β-arylated thiophenes. The reaction proceeds with easily accessible catalyst, base and substrates, without oxidant or ligand and tolerates a variety of substituents on both the benzene and thiophene moieties.
K. Yuan and H. Doucet, Chem. Sci., 2014, 5, 392 DOI: 10.1039/C3SC52420E
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