Gold-catalyzed intramolecular cyclization of alkynones with pyridine anhydrobases
摘要:
4-Alkylpyridines functionalized with alkynyl amide substituents can be converted to pyridyl-substituted lactams via Au-catalyzed cyclization at the pyridine benzylic carbon. These transformations proceed through allcylidene dihydropyridine (anhydrobase) intermediates and demonstrate the ability to utilize these species in metal-catalyzed C-C bond forming reactions. (C) 2013 Elsevier Ltd. All rights reserved.