Carbonylative Suzuki–Miyaura couplings of sterically hindered aryl halides: synthesis of 2-aroylbenzoate derivatives
作者:Aya Ismael、Troels Skrydstrup、Annette Bayer
DOI:10.1039/d0ob00044b
日期:——
diversely substituted 2-aroylbenzoate esters featuring a new protocol for the carbonylative coupling of aryl bromides with boronic acids and a new strategy to favour carbonylative over non-carbonylative reactions. Two different synthetic pathways - (i) the alkoxycarbonylation of 2-bromo benzophenones and (ii) the carbonylative Suzuki-Miyaura coupling of 2-bromobenzoate esters - were evaluated. The latter approach
我们已经开发出一种羰基化方法,用于合成不同取代的2-芳基苯甲酸酯,其特征是芳基溴化物与硼酸进行羰基化偶联的新方案,以及采用羰基化而非非羰基化反应的新策略。评估了两种不同的合成途径-(i)2-溴二苯甲酮的烷氧基羰基化和(ii)2-溴苯甲酸酯的羰基化Suzuki-Miyaura偶联-。后一种方法提供了更宽的基材耐受性,因此是首选途径。我们观察到2-取代的芳基溴化物是具有挑战性的羰基化化学底物,有利于非羰基化途径。但是,我们发现,缓慢添加硼酸可以改善羰基化的Suzuki-Miyaura偶联,