Cu@Fe3O4-TiO2-L-dopa: A novel and magnetic catalyst for the Chan-Lam cross-coupling reaction in ligand free conditions

被引：35
|
作者：
Sharma, Harsha [1 ]
Mahajan, Hitesh [1 ]
Jamwal, Babita [1 ]
Paul, Satya [1 ]
机构：
[1] Univ Jammu, Dept Chem, Jammu 180006, India
来源：
CATALYSIS COMMUNICATIONS | 2018年 / 107卷
关键词：
Magnetic nanoparticles; TiO2; nanoparticles; Agglomeration; Leaching; L-dopa; Chan-Lam cross-coupling reaction; CHEMOSELECTIVE N-ARYLATION; ARYLBORONIC ACIDS; C-N; ROOM-TEMPERATURE; FACILE SYNTHESIS; HOLLOW SPHERES; COPPER; NANOPARTICLES; IMIDAZOLES; AMINES;
D O I：
10.1016/j.catcom.2018.01.016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel and magnetic Cu(0) catalyst (Cu@Fe3O4-TiO2-L-dopa) has been prepared and characterized with different techniques, such as SEM, HR-TEM, ICP-AES, XRD, FTIR, EDX, CHN analysis, VSM and TGA studies. TiO2 nanoparticles were proved to be efficient in stabilizing magnetite nanoparticles, thus preventing their agglomeration. It has been also observed that grafting of Fe3O4-TiO2 with L-dopa reduces the leaching of Cu(0) nanoparticles. The synthesized catalyst showed excellent catalytic activity for the Chan-Lam cross-coupling reaction of phenyl boronic acid with different substituted anilines in ligand-free conditions, and was found to be recyclable up to 6 runs without loss of significant activity.
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页码：68 / 73
页数：6
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