N-(1-Oxy-2-picolyl)oxalamic acids as a new type of O,O-ligands for the Cu-catalyzed N-arylation of azoles with aryl halides in water or organic solvent
作者:Yongbin Wang、Yu Zhang、Beibei Yang、Ao Zhang、Qizheng Yao
DOI:10.1039/c5ob00045a
日期:——
identified as novel efficient ligands for copper-catalyzed C–N cross-coupling of azoles and arylhalides in water. The N-arylation of imidazoles, indoles and pyrazoles proceeded with moderate to excellent yields and complete selectivity over aromatic amines and phenols. Moreover, L5, which is also efficient in organic solvent with low catalyst loading, can be used to promote the N-arylation reactions with