ppm level supported Pd-catalyzed carbonylative Suzuki–Miyaura cross-coupling of aryl iodides using oxalic acid as CO source
作者:Pushkar Mehara、Poonam Sharma、Ajay Kumar Sharma、Shaifali、Pralay Das
DOI:10.1016/j.mcat.2023.113546
日期:2023.11
Polystyrene supported palladium (Pd@PS) catalyzed cost-efficient and sustainable protocol for carbonylative Suzuki-Miyaura cross-coupling (C-SMCC) reaction has been reported. Herein, ppm (parts per million) level of Pd (0.1 mol%, 1000 ppm) of the Pd@PS catalyst, with high turnover number, i.e. ∼5061 (calculated upto six cycles) was applied. Furthermore, to avoid the direct use of toxic, flammable,
聚苯乙烯负载钯 (Pd@PS) 催化的羰基化铃木-宫浦交叉偶联 ( C -SMCC) 反应具有成本效益且可持续的方案已被报道。在此,采用了 Pd@PS 催化剂的 ppm(百万分之一)水平(0.1 mol%,1000 ppm),具有高周转数,即~5061(计算最多六个循环)。此外,为了避免直接使用有毒、易燃、无味的一氧化碳 (CO) 气体,草酸已被用作固体、廉价、无添加剂的 CO 源。开发的方案适用于各种芳基碘化物和苯基硼酸,可产生对称和不对称联芳基酮。有趣的是,二羰基化的铃木-宫浦交叉偶联产物也以中等至优异的产率获得。