An efficient ligand-free Pd(OAc)2-catalyzed selective arylation of pyridine N-oxides using potassium (hetero)aryltrifluoroborates as coupling partners via C–H bond activation was achieved in the presence of TBAI. This approach has a broad substrate scope and shows moderate to high yields.
M. Li, X. Li, H. Chang, W. Gao and W. Wei, Org. Biomol. Chem., 2016, 14, 2421 DOI: 10.1039/C5OB02409A
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