Convenient synthesis of <i>N</i>-1-alkyl benzimidazoles via Pd catalyzed C–N bond formation and cyclization
作者:Fusheng Bie、Yongfeng Yao、Han Cao、Yijun Shi、Peng Yan、Jie Ma、Ying Han、Xuejing Liu
DOI:10.1080/00397911.2021.1939056
日期:2021.8.3
Abstract N-1-Alkyl-2-unsubstituted benzimidazoles were directly synthesized by intermolecular coupling of formimidamides with benzylamines; the syntheses were catalyzed by Pd(OAc)2 in one pot, giving rise to moderate to good yields. Aromatic formamidines with various substituents as starting materials could be readily prepared from the reactions of the corresponding anilines and N,N-dimethylformamide
摘要 N -1-烷基-2-未取代的苯并咪唑通过甲酰亚胺与苄胺的分子间偶联直接合成;合成由 Pd(OAc) 2在一锅中催化,产生中等至良好的产率。由相应的苯胺和N,N-二甲基甲酰胺二甲基乙缩醛的反应可以很容易地以高产率制备具有各种取代基的芳族甲脒作为原料。