DNA-supported palladium nanoparticles as a reusable catalyst for the copper- and ligand-free Sonogashira reaction
作者:Ana Silvia Camacho、Iris Martín-García、Claudia Contreras-Celedón、Luis Chacón-García、Francisco Alonso
DOI:10.1039/c7cy00001d
日期:——
discipline with diverse applications. However, studies focused on the combination of DNA and metal nanoparticles for catalyst design are scanty. We have prepared a catalyst composed of palladium nanoparticles supported on DNA which has been characterised by TEM, SEM, EDX, UV, FTIR and XPS. The catalyst, mainly composed of Pd(II) and Pd(IV) species in the form of oxides, has been effectual in the copper-
DNA纳米技术近来已成为一门功能强大的学科,具有各种各样的应用。然而,专注于DNA和金属纳米颗粒结合用于催化剂设计的研究很少。我们已经制备了由负载在DNA上的钯纳米粒子组成的催化剂,该催化剂已通过TEM,SEM,EDX,UV,FTIR和XPS进行了表征。催化剂,主要由Pd(II)和Pd(IV)组成)形式的氧化物,在芳基碘化物与末端芳族和脂族炔烃的无铜和无配体的Sonogashira–Hagihara偶联中有效。在温和条件下(65°C)在甲醇中进行空气排空时,使用低催化剂负载量(0.5 mol%),可以分离出54–86%的收率。而且,该催化剂可以容易地回收并在五个循环中再使用,并且比一系列商业钯催化剂表现出更好的性能。反应的机械方面也得到了详细解决。