Covalent organic framework supported Pd(II)‐catalyzed conjugate additions of arylboronic acids to α,β‐unsaturated carboxylic acids
作者:Min Wen、Shujuan Lu、Chaogang Fan、Kai Shen、Shaohui Lin、Qinmin Pan
DOI:10.1002/aoc.6263
日期:2021.8
A palladium(II)-coordinated covalent organic framework (Pd(II)@COF) was mechanochemically synthesized from [2,2′-bipyridine]-5,5′-diamine (Bpy) and 1,3,5-triformylphloroglucinol (Tp), which was demonstrated as a catalyst for conjugate addition of arylboronic acids to unreactive α,β-unsaturated carboxylic acids in aqueous media (water/acetone = 1:1). Modest to good yields were obtained for most substrates
由[2,2'-联吡啶]-5,5'-二胺(Bpy)和1,3,5-三甲酰基间苯三酚(Tp)机械化学合成钯(II)配位的共价有机骨架(Pd(II)@COF) ),它被证明是芳基硼酸与非反应性 α,β-不饱和羧酸在水性介质 (水/丙酮 = 1:1) 中共轭加成的催化剂。大多数底物获得了中等至良好的产率,对催化剂可回收性的研究表明,多相催化剂在前 4 个循环中的产率大于 80%。这项研究拓宽了 COF 支持的催化的应用,并为 Pd(II) 催化提供了新的选择。