CuI/L5 (N,N′-dimethylethylenediamine) proves to be an efficient catalyst system for the amination of arylhalides with guanidines. The same catalyst system is then successfully applied to the one-step synthesis of 1-H-2-amino-benzimidazoles through tandem aminations of 1,2-dihaloarenes in modest yields. This methodology is also applicable for the preparation of 1-H or 1-substutituted 2-aryl- or 2-alkyl-benzimidazoles
事实证明,CuI / L5(N,N'-二甲基
乙二胺)是一种用于将芳基卤化物与
胍胺化的有效催化剂体系。然后将相同的催化剂体系成功地通过1,2-二卤代
芳烃的串
联胺化以适度的产率成功地一步合成1- H -2-
氨基-
苯并咪唑。该方法学也可用于制备1- H或1-取代的2-芳基-或2-烷基-
苯并咪唑。