Copper-Catalyzed Direct Aryl Quaternization of <i>N</i>-Substituted Imidazoles to Form Imidazolium Salts
作者:Taiyong Lv、Zhi Wang、Jingsong You、Jingbo Lan、Ge Gao
DOI:10.1021/jo400527r
日期:2013.6.7
Diaryliodonium salts are employed to directly quaternize N-substituted imidazoles by using a copper catalyst to construct aryl imidazolium salts in moderate to excellent yields. This transformation is tolerant to a broad range of functional groups and provides a straightforward, efficient, and versatile route to synthesize aryl imidazolium as well as triazolium salts, especially the unsymmetric version.