Consecutive palladium-catalyzed Hiyama–Heck reactions in aqueous media under ligand-free conditions
作者:Álvaro Gordillo、Ernesto de Jesús、Carmen López-Mardomingo
DOI:10.1039/b707583a
日期:——
Symmetric and asymmetric (E)-1,2-diarylethenes are synthesized from aryl bromides by consecutive one-pot HiyamaâHeck reactions carried out in water and under air; the only additives required are sodium hydroxide, palladium acetate and poly(ethylene glycol), and the products are isolable in many cases by simple filtration of the water solution.
通过在水和空气条件下进行的一锅法Hiyama-Heck反应,从芳基溴合成对称和非对称(E)-1,2-二芳基乙烯。唯一所需的添加剂是氢氧化钠、乙酸钯和聚乙二醇,并且在许多情况下,产品可以通过简单地过滤水溶液来分离。