Magnetic Cu0@HAP@γ-Fe2O3 nanoparticles: An efficient catalyst for one-pot three-component reaction for the synthesis of imidazo[1,2-a]pyridines
作者:Wei Sun、Wei Jiang、Gan Zhu、Yiqun Li
DOI:10.1016/j.jorganchem.2018.07.039
日期:2018.10
incorporated magnetic hydroxyapatite nanoparticles (Cu0@[email protected]γ-Fe2O3 NPs) was conveniently synthesized via the ion exchange reaction, oxidation, and reduction steps. The structure and composition of the nanohybrid were confirmed by FT-IR, SEM, EDS, TEM, XPS, and TGA. The magnetic Cu0@[email protected]γ-Fe2O3 hybrid can efficiently catalyzed a one-pot multicomponent synthesis of imidazo[1
的Cu(0)掺入磁性羟基磷灰石纳米颗粒(铜0 @ [电子邮件保护]γ-的Fe 2个ö 3纳米颗粒)中的溶液方便地合成通过离子交换反应,氧化和还原步骤。通过FT-IR,SEM,EDS,TEM,XPS和TGA确认了纳米杂交体的结构和组成。磁性的Cu 0 @ [电子邮件保护]γ-的Fe 2 ö 3该杂化物可以高效地催化由2-氨基吡啶,醛或乙醛酸,炔烃或炔基羧酸进行的一锅多组分合成咪唑并[1,2-a]吡啶衍生物。使用外部磁体可以轻松地从反应混合物中分离出磁性纳米催化剂,并成功地进行了三轮测试,但催化活性略有下降。