An intermolecular biaryl coupling reaction of phenol derivatives activated by a sulfonium salt formed from diphenyl sulfoxide and trifluoromethanesulfonic anhydride has been developed. The method is a rapid, one-pot reaction leaving no trace of the sulfonium moiety in the coupling products. Tri-substituted phenyl ethers also gave coupling products in moderate yields.
K. Higuchi, T. Tago, Y. Kokubo, M. Ito, M. Tayu, S. Sugiyama and T. Kawasaki, Org. Chem. Front., 2018, 5, 3219 DOI: 10.1039/C8QO00798E
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