Synthesis of Fe3O4-DOPA-Cu Magnetically Separable Nanocatalyst: A Versatile and Robust Catalyst for an Array of Sustainable Multicomponent Reactions under Microwave Irradiation
作者:Mitlesh Kumari、Yachana Jain、Priya Yadav、Harshita Laddha、Ragini Gupta
DOI:10.1007/s10562-019-02794-8
日期:2019.8
reporting a facile route to synthesize magnetically separable copper loaded L-DOPA functionalized magnetite nanoparticles (Fe3O4-DOPA-CuNPs), which are well characterized by FT-IR, PXRD, SEM, EDAX, HRTEM, XPS, TGA and VSM techniques. This single catalyst exhibits excellent catalytic activity towards (i) synthesis of DHPMs via Biginelli reaction (ii) synthesis of imidazoles (iii) synthesis of 2-amino-4H-chromenes
在此,我们报告了一种合成负载磁可分离铜的 L-DOPA 功能化磁铁矿纳米粒子 (Fe3O4-DOPA-CuNPs) 的简便途径,该纳米粒子可通过 FT-IR、PXRD、SEM、EDAX、HRTEM、XPS、TGA 和 VSM技术。这种单一催化剂对 (i) 通过 Biginelli 反应合成 DHPMs (ii) 合成咪唑 (iii) 通过“点击反应”合成 2-氨基-4H-色烯 (iv) 1,2,3-三唑衍生物表现出优异的催化活性' 在微波辐射 (MWI) 下。有趣的是,它可以很容易地回收并重新用于上述四种重要的多组分反应的后续循环,而其催化活性没有任何显着降低。图形摘要