(PIDA)/iodine has been established as a promising reagent to promote the construction of 2-substituted benzimidazoles from 2-aminobenzylamine and a variety of easily available aldehydes/arylamines through a ring distortion strategy. The present protocol offers mild, metal free, robust conditions to synthesize 2-substituted benzimidazoles in good to excellent yields. In addition, the oxidation prone functional
在本工作中,
碘苯二乙酸酯(
PIDA)/
碘的组合已被确立为一种有前途的试剂,可通过环畸变策略促进由2-
氨基苄基胺和各种容易获得的醛/芳基胺构建2-取代的
苯并咪唑。本方案提供了温和,无
金属,稳定的条件,可以很好地合成2-取代的
苯并咪唑。另外,易于氧化的官能团在反应过程中显示出耐受性,并且在反应完成后,通过将反应混合物通过
硅胶床轻松地过滤,可以容易地获得纯产物。