当前位置: X-MOL 学术Catal. Commun. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
[email protected]3O4-TiO2-L-dopa: A novel and magnetic catalyst for the Chan-Lam cross-coupling reaction in ligand free conditions
Catalysis Communications ( IF 3.7 ) Pub Date : 2018-01-17 , DOI: 10.1016/j.catcom.2018.01.016
Harsha Sharma , Hitesh Mahajan , Babita Jamwal , Satya Paul

A novel and magnetic Cu(0) catalyst ([email protected]3O4-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.



中文翻译:

[受电子邮件保护] 3 O 4 -TiO 2 -L-多巴:一种在无配体条件下进行Chan-Lam交叉偶联反应的新型磁性催化剂

制备了新颖的磁性Cu(0)催化剂([受电子邮件保护] 3 O 4 -TiO 2 -L-多巴),并用不同的技术进行了表征,例如SEM,HR-TEM,ICP-AES,XRD,FTIR, EDX,CHN分析,VSM和TGA研究。TiO 2纳米颗粒被证明可有效地稳定磁铁矿纳米颗粒,从而防止其团聚。还已经观察到Fe 3 O 4 -TiO 2的接枝与左旋多巴一起使用可减少Cu(0)纳米粒子的浸出。合成的催化剂在无配体条件下对苯基硼酸与不同取代的苯胺的Chan-Lam交叉偶联反应表现出优异的催化活性,并且发现可循环使用多达6次,而不会损失任何明显的活性。

更新日期:2018-01-17
down
wechat
bug