Palladium-Catalyzed ortho-Sulfonylation of 2-Aryloxypyridines and Subsequent Formation of ortho-Sulfonylated Phenols
2015
Xu, Yinfeng | Liu, Ping | Li, Shun-Li | Sun, Peipei
A palladium-catalyzed direct sulfonylation of 2-aryloxypyridines on the ortho-position of the benzene ring was developed using 2-pyridyloxyl as the directing group and sulfonyl chlorides as sulfonylation reagents. The protocol was available for both electron-rich and electron-deficient substrates. The ortho-sulfonylated phenol was synthesized expediently from the sulfonylation product by the removal of the pyridyl group.
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