A facile sp 3 C–H bonds amidation of N , N -dimethylanilines by a novel ionic iron(III) complex containing an imino-functionalized imidazolium cation
作者:Fan Zhu、Bing Lu、Hongmei Sun、Qi Shen
DOI:10.1016/j.tetlet.2016.07.098
日期:2016.9
imidazolium salt, 1-[1-(2,6-diisopropylphenylimino)ethyl]-3-benzylimidazolium chloride ([HL]Cl,), was designed and used to prepare a novel ionic iron(III) complex [HL][FeCl4] (2). Complex 2 was an efficient and easy-to-use catalyst for the direct sp3 C–H bond amidation of N,N-dimethylanilines, affording a wide variety of N-substituted aromatic or aliphatic amides in moderate to good yields. This reaction is
设计了一种新型的亚氨基官能化的咪唑鎓盐,即1- [1-(2,6-二异丙基苯基亚氨基)乙基] -3-苄基咪唑鎓氯化物([HL] Cl),并用于制备新型离子铁(III)络合物[ HL] [FeCl 4 ](2)。络合物2是用于N,N-二甲基苯胺直接sp 3 C–H键酰胺化的高效且易于使用的催化剂,可提供中等至良好收率的多种N-取代的芳族或脂族酰胺。该反应是温和的反应条件下,芳族或脂族酰胺对叔胺未活化的sp 3 C–H键进行铁催化的分子间酰胺化反应的第一个实例。