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Boehmite@SiO2@ Tris (hydroxymethyl)aminomethane‐Cu(I): a novel, highly efficient and reusable nanocatalyst for the C‐C bond formation and the synthesis of 5‐substituted 1H‐tetrazoles in green media
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-07-09 , DOI: 10.1002/aoc.5804
Arash Ghorbani‐Choghamarani 1 , Hamid Aghavandi 1 , Masoud Mohammadi 1
Affiliation  

In this work, a versatile protocol was introduced for the preparation of a new Cu(I) supported complex on Silica supported boehmite nanoparticles (Boehmite@SiO2@Tris‐Cu(I)). The structure of the catalyst was comprehensively characterized using Fourier transform infrared spectroscopy (FT‐IR), X‐Ray Diffractometer (XRD), energy‐dispersive X‐ray spectroscopy (EDS), inductively coupled plasma atomic emission spectroscopy (ICP), X‐ray mapping, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) techniques. The catalytic activity of this catalyst was studied in the Suzuki cross‐coupling reaction and synthesis of 5‐substituted 1H‐tetrazole derivatives in ethanol and PEG‐400 respectively as green solvents. In this sense, simple preparation of the catalyst from the commercially available materials, high catalytic activity, simple operation, short reaction times, high yields and use of green solvent are some advantages of this protocol. Finally, it is worth mentioning that this nanocatalyst was easily recovered, and reused for several times without significant loss of its catalytic efficiency. In addition, stability of the catalyst after recycling was confirmed by FT‐IR technique.

中文翻译:

Boehmite @ SiO2 @ Tris(羟甲基)氨基甲烷-Cu(I):一种新型,高效且可重复使用的纳米催化剂,用于绿色介质中的C-C键形成和5取代1H-四唑的合成

在这项工作中,引入了一种通用协议,用于在二氧化硅负载的勃姆石纳米颗粒(Boehmite @ SiO 2)上制备新的Cu(I)负载的复合物。@ Tris‐Cu(I))。使用傅立叶变换红外光谱(FT-IR),X射线衍射仪(XRD),能量色散X射线光谱仪(EDS),电感耦合等离子体原子发射光谱仪(ICP),X‐射线映射,热重分析(TGA)和扫描电子显微镜(SEM)技术。在Suzuki交叉偶联反应和分别在乙醇和PEG-400中作为绿色溶剂的5-取代1H-四唑衍生物的合成中研究了该催化剂的催化活性。从这个意义上说,由市售材料简单地制备催化剂,高催化活性,操作简单,反应时间短,产率高和使用绿色溶剂是该方案的一些优点。最后,值得一提的是,这种纳米催化剂易于回收,可重复使用几次,而不会明显降低其催化效率。另外,通过FT-IR技术证实了回收后催化剂的稳定性。
更新日期:2020-09-14
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