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Regioselective Preparation of Pyridin-2-yl Ureas from 2-Chloropyridines Catalyzed by Pd(0)

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2005

Year

Abstract

The palladium-catalyzed ureidation reaction of 2-chloropyridines can be regioselectively performed in good yield, with both aryl and aliphatic ureas, using xantphos as the ligand, Pd(OAc)2 as the source of palladium, NaOt-Bu/H2O or NaOH/H2O as the base, and dioxane as the solvent