Regioselective Preparation of Pyridin-2-yl Ureas from 2-Chloropyridines Catalyzed by Pd(0)
作者:Antonio Abad、Consuelo Agulló、Ana Carmen Cuñat、Cristina Vilanova
DOI:10.1055/s-2005-861844
日期:——
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