Copper(I) Oxide/<i>N</i>
,<i>N′</i>
-Bis[(2-furyl)methyl]oxalamide-Catalyzed Coupling of (Hetero)aryl Halides and Nitrogen Heterocycles at Low Catalytic Loading
作者:Govind Goroba Pawar、Haibo Wu、Subhadip De、Dawei Ma
DOI:10.1002/adsc.201700026
日期:2017.5.17
An easily prepared oxalic diamide is a powerful ligand for the copper‐catalyzed coupling of aryl halides with nitrogen heterocycles. Only 1–2 mol% each of copper(I) oxide and N,N′‐bis[(2‐furyl)methyl]oxalamide (BFMO) are needed to form N‐arylation products under mild conditions. More than 10 different types of nitrogen heterocycles are compatible with these conditions, thereby giving the corresponding
2,6-Bis(2-methylhydrazine-1-carbonyl)pyridine 1-oxide as an Efficient Ligand for Copper-Catalyzed C–N Coupling Reaction in Water
作者:Xiaochuang Wang、Fei Meng、Jie Zhang、Jianwei Xie、Bin Dai
DOI:10.1007/s10562-018-2321-8
日期:2018.4
Cu2O/2,6-bis(2-methylhydrazine-1-carbonyl)pyridine 1-oxide was found to be an efficiently catalyticsystem for the N-arylation of imidazole, indole, benzimidazole, pyrrole, benzylamine and ethanolamine with aryl iodides and bromides by using NaOH as base in the presence of 20 mol% (n-Bu)4NBr, and water as solvent at 130 °C in 24 h, and giving the N-arylated products in moderate to excellent yields