Peiman Sahar, Maleki Behrooz, Ghani Milad
Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, P.O. Box 47416-95447, Babolsar, Iran.
Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
Sci Rep. 2024 Oct 23;14(1):25082. doi: 10.1038/s41598-024-75629-1.
In this research, a logical strategy with a recyclable synthetic perspective of view and a rational design to prepare a nanocatalyst with a dendrimer template containing ionic liquid is presented. Magnetic silica nanoparticles were prepared using the Stober method. Their surface was modified with the help of cyanuric chloride, melamine, and 1-methylimidazole as Linkers. Finally, the nanocatalyst was decorated with affordable copper metal. The dendrimer-templated nanocatalyst was identified by different analyses, such as FT-IR, SEM, TEM, XRD, EDX, TGA, CHN, and ICP-OES. FeO@SiO@NTMP-IL-Cu was used as a heterogeneous nanocatalyst with good performance and reusable in coupling syntheses. The synthesis of A-coupling and Ullmann coupling was performed under solvent-free and THF conditions, respectively, with high yields. Reusability and high efficiency of products in the vicinity of this catalyst, the use of cheap and available metal are desirable features of this synthetic catalyst.
在本研究中，提出了一种具有可回收合成视角的逻辑策略以及合理设计，以制备一种带有含离子液体树枝状聚合物模板的纳米催化剂。采用斯托伯法制备磁性二氧化硅纳米颗粒。借助三聚氯氰、三聚氰胺和1-甲基咪唑作为连接剂对其表面进行改性。最后，用价格低廉的铜金属对纳米催化剂进行修饰。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、能量散射X射线光谱（EDX）、热重分析（TGA）、元素分析（CHN）和电感耦合等离子体质谱（ICP-OES）等不同分析方法对树枝状聚合物模板纳米催化剂进行了鉴定。FeO@SiO@NTMP-IL-Cu用作多相纳米催化剂，性能良好且可在偶联合成中重复使用。A-偶联反应和乌尔曼偶联反应分别在无溶剂和四氢呋喃（THF）条件下进行，产率很高。该催化剂附近产物的可重复使用性和高效率，以及使用廉价易得的金属，是这种合成催化剂的理想特性。
