A variety of aminated bipyridines and bipyridine sultams are prepared by intramolecular radical [1,5]-ipso and [1,6]-ortho substitutions, using a sulfonamide as a linker to connect the pyridyl radical to the pyridine under attack. For the cases studied, different regiochemistries are observed depending on the initial position of the sulfonamide linker.
J. Recio, F. Filace, E. Gala, A. Pérez-Redondo, J. Álvarez-Builla and C. Burgos, RSC Adv., 2020, 10, 10447 DOI: 10.1039/D0RA02026E
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