Microwave‐Assisted and Base‐Promoted Domino Reaction of Cyclic N‐Sulfonyl Ketimines with α,β‐Disubstituted Nitroalkenes: A Green Access to 2‐Hydroxyarylpyridines

Microwave-assisted and organobase-promoted eco-friendly one-pot protocol has been developed to construct an interesting class of pyridyl-substituted phenols/alpha-naphthols containing a carboxylate or aroyl group at C2 position on the pyridine ring. A series of N-sulfonyl ketimines and different kinds of bielectrophiles, such as MBH acetates of nitroalkenes/alpha-arylacetylenyl-beta-arylnitro-olefins, were involved in this cyclization process, which delivers good to high yields of aforementioned heterocycles and excels with several compatible functionalities.