Transition-Metal-Free Transfer Hydrogenative Cascade Reaction of Nitroarenes with Amines/Alcohols: Redox-Economical Access to Benzimidazoles
作者:Arup K. Kabi、Raghuram Gujjarappa、Anupam Roy、Abhishek Sahoo、Dulal Musib、Nagaraju Vodnala、Virender Singh、Chandi C. Malakar
DOI:10.1021/acs.joc.1c01450
日期:2021.11.5
describes an efficient transition-metal-free process toward the transfer hydrogenative cascade reaction between nitroarenes and amines or alcohols. The developed redox-economical approach was realized using a combination of KOtBu and Et3SiH as reagents, which allows the synthesis of benzimidazole derivatives via σ-bond metathesis. The reaction conditions hold well over a wide range of substrates embedded with
该报告描述了一种有效的无过渡金属工艺,用于硝基芳烃与胺或醇之间的转移氢化级联反应。开发的氧化还原经济方法是使用 KO t Bu 和 Et 3 SiH 作为试剂的组合实现的,这允许通过 σ 键复分解合成苯并咪唑衍生物。反应条件适用于各种嵌入不同官能团的底物,以良好至优异的产率提供所需的产品。已根据一系列控制实验、质谱证据描述了机械建议,这些证据得到了具有可行能量分布的密度泛函理论 (DFT) 计算的充分支持。