Heterogeneous Suzuki–Miyaura coupling of heteroaryl ester <i>via</i> chemoselective C(acyl)–O bond activation
作者:Hongpeng Ma、Chaolumen Bai、Yong-Sheng Bao
DOI:10.1039/c9ra02394a
日期:——
A site-selective supported palladium nanoparticle catalyzed Suzuki–Miyaura cross-coupling reaction with heteroaryl esters and arylboronic acids as coupling partners was developed. This methodology provides a heterogeneous catalytic route for aryl ketone formation via C(acyl)–O bond activation of esters by successful suppression of the undesired decarbonylation phenomenon. The catalyst can be reused
开发了一种以杂芳基酯和芳基硼酸为偶联伙伴的位点选择性负载钯纳米颗粒催化的 Suzuki-Miyaura 交叉偶联反应。该方法通过成功抑制不需要的脱羰现象,通过酯的 C(酰基)-O 键活化,为芳基酮的形成提供了一种多相催化途径。该催化剂可重复使用,并在八次循环后表现出较高的活性。反应前后催化剂的XPS分析表明该反应可能是通过以Pd 0开始的Pd 0 /Pd II催化循环进行的。