Direct use of nanoparticles as a heterogeneous catalyst: Pd0-doped CoFe2O4 magnetic nanoparticles for Sonogashira coupling reaction
作者:Subhasish Roy、Kula Kamal Senapati、Prodeep Phukan
DOI:10.1007/s11164-014-1699-1
日期:2015.8
A magnetically separable nanocatalyst prepared by incorporating Pd nanoparticles onto CoFe2O4 magnetic nanoparticles was found to be very effective in catalyzing Sonogashira cross-coupling reactions. In this green synthetic process, it is not necessary to use an external linker to support the palladium nanoparticles onto the cobalt ferrite matrix. The catalyst is effective without the use of any ligand
发现通过将Pd纳米颗粒掺入CoFe 2 O 4磁性纳米颗粒制备的可磁分离的纳米催化剂在催化Sonogashira交叉偶联反应中非常有效。在这种绿色的合成过程中,无需使用外部连接器将钯纳米颗粒负载到钴铁氧体基质上。该催化剂在不使用任何配体或铜添加剂的情况下是有效的。该反应可在70°C的乙醇中与芳基碘化物和溴化物一起顺利进行,从而以高收率生产相应的产物。反应完成后,可以使用外部磁体轻松分离催化剂,并重复使用多达五个具有持续催化活性的催化循环。