Synthesis of Benzimidazole-Substituted Arylboronic Acids<i>via</i>Aerobic Oxidation of 1,2-Arylenediamines and Formyl-Substituted Aryl MIDA Boronates using Potassium Iodide as a Catalyst
作者:Ye-Sol Lee、Cheol-Hong Cheon
DOI:10.1002/adsc.201500302
日期:2015.9.14
A highly efficient protocol for the synthesis of benzimidazole‐substituted arylboronic acids was developed via aerobic oxidative cyclization of 1,2‐aryldiamines and formyl‐substituted aryl MIDA (N‐methyliminodiacetic acid) boronates using potassium iodide as a nucleophilic catalyst. Furthermore, a one‐pot protocol for the synthesis of benzimidazole‐substituted arylboronic acids from 1,2‐phenylenediamines
通过使用碘化钾作为亲核催化剂,对1,2-芳基二胺和甲酰基取代的芳基MIDA(N-甲基亚氨基二乙酸)硼酸酯进行好氧氧化环化反应,开发了一种高效的苯并咪唑取代的芳基硼酸合成方案。此外,在不分离任何中间体的情况下,开发了一种由1,2-苯二胺和甲酰基取代的芳基硼酸合成苯并咪唑取代的芳基硼酸的一锅操作规程。所得硼酸无需分离即可进一步进行Suzuki-Miyaura偶联反应,仅需一个分离步骤即可生成二芳基取代的苯并咪唑。