Iridium-catalyzed intramolecular C N and C O/S cross-coupling reactions: Preparation of benzoazole derivatives
作者:Yajie Shi、Qifan Zhou、Fangyu Du、Yang Fu、Yang Du、Ting Fang、Guoliang Chen
DOI:10.1016/j.tetlet.2019.151082
日期:2019.10
The irdium-catalyzed intramolecular arylcarbon-hetero cross-coupling reactions with o-haloarylamides or o-haloarylamidine have been effectively achieved using KOAc and just 1 mol% catalyst. The [Ir(cod)Cl]2 was proved to be more potential for smoothly assembling functional structures benzimidazoles, benzoxazoles and benzothiazoles, which was superior to Cu- and Pd-catalyzed systems. Simultaneously
使用KOAc和仅1mol%的催化剂已经有效地实现了铱催化的与邻卤代芳基酰胺或邻卤代芳基idine杂的分子内芳基碳杂交联反应。事实证明,[Ir(cod)Cl] 2具有更大的潜力,可以平稳地组装功能结构苯并咪唑,苯并恶唑和苯并噻唑,优于铜和钯催化的体系。同时,开发了一种5 g规模的简洁而有效的tafamidis合成方法。