Palladium-catalyzed annulation of 2-(aryldiazenyl) aniline with dimethyl sulfoxide to access N-aryl-1H-benzo[d]imidazol-1-amine
作者:Hepan Wang、Song Sun、Jiang Cheng
DOI:10.1016/j.tetlet.2017.08.066
日期:2017.10
A palladium-catalyzed annulation of 2-(aryldiazenyl) aniline and dimethylsulfoxide was developed to access N-aryl-1H-benzo[d]imidazol-1-amine in moderate to good yields. Activated by 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO), DMSO served as a “CH” fragment during this procedure. It represents a facile pathway leading to benzimidazoles.
开发了钯催化的2-(芳基二氮烯基)苯胺和二甲基亚砜的环化反应,以中等至良好的产率获得N-芳基-1 H-苯并[ d ]咪唑-1-胺。DMSO被1,4-二氮杂双环[2.2.2]辛烷双(二氧化硫)加合物(DABSO)激活,在此过程中充当“ CH ”片段。它代表了导致苯并咪唑的简便途径。