Preparation, Characterization and Application of Copper Schiff base Complex Supported on MCM-41 as a Recyclable Catalyst for the Ullmann-type N-arylation Reaction

被引：29
作者：
Niakan, Mahsa [1 ]
Asadi, Zahra [1 ]
Zare, Sayeh [1 ]
机构：
[1] Shiraz Univ, Dept Chem, Coll Sci, Shiraz, Iran
来源：
CHEMISTRYSELECT | 2020年 / 5卷 / 01期
关键词：
Copper; Heterogeneous catalyst; MCM-41; N-arylation reaction; Schiff base; MESOPOROUS SILICA; EFFICIENT CATALYST; COUPLING REACTION; ARYL HALIDES; HETEROGENEOUS CATALYST; REUSABLE CATALYST; BENZYL AMINES; NANOPARTICLES; HETEROCYCLES; OXIDATION;
D O I：
10.1002/slct.201903807
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, a Cu-Schiff base complex supported on highly ordered mesoporous silica MCM-41 was successfully prepared to form a heterogeneous catalyst. The structural and textural properties of the newly prepared catalyst were determined by various microscopic and spectroscopic techniques such as FT-IR, BET, TGA, DRS UV-vis, EDX, XPS, ICP-OES, XRD, and TEM. The catalyst was used in the N-arylation of various amines through formation of intramolecular C(aryl)-N bond from the relevant aryl halides (Ar-I and Ar-Br) with amines by coupling reactions of Ullmann type. The significant advantages of this protocol were generality, low metal content, high yield of products, and simple work-up procedure. Moreover, the catalyst could be recycled efficiently for seven runs without any appreciable decrease in reactivity and no leaching of copper was found during this course.
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页码：40 / 48
页数：9
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