利用 NiO/Cu2O 纳米光催化剂微波辅助合成 1,4-二取代的 1,2,3- 三唑衍生物

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Journal of chemical technology and biotechnology Pub Date : 2024-07-26 DOI:10.1002/jctb.7719
Yasser A Attia, Yasser MA Mohamed
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引用次数: 0

摘要

背景:镍-铜催化叠氮-炔烃点击反应(Ni-CuAAC)用于生产 1,2,3-三唑的主要特点是具有区域选择性,且反应在温和的条件下进行。使用铜盐作为催化剂往往会导致制备的三唑受到污染等难题。在 Ni-CuAAC 反应中,利用 NiO/Cu2O 纳米复合材料(NCs)作为异相纳米催化剂,在微波辐照下以高化学收率制备了一些 1,4-二取代的 1,2,3-三唑。制备的催化剂在优化的反应条件下用于催化苯甲酰基叠氮化物和苯乙炔的反应。与 Cu2O 纳米颗粒相比,NiO/Cu2O NCs 表现出较高的催化活性。此外,在微波辐照下,以乙醇-水为溶剂系统,观察到了更高的产率和高效的产物分离。与均相催化体系相比,使用 Cu2O 和 NiO/Cu2O 等异相纳米粒子催化剂具有多种优势。这些优势包括催化剂更容易分离和回收、催化剂重复使用的潜力以及通过调节纳米粒子的组成和结构来微调催化特性的能力。© 2024 化学工业学会(SCI)。
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Microwave-assisted synthesis of 1,4-disubstituted 1,2,3-triazole derivatives utilizing NiO/Cu2O nano-photocatalyst

BACKGROUND

The main characteristic features of nickel–copper-catalyzed azide–alkyne click (Ni-CuAAC) reactions for production of 1,2,3-triazoles are regioselectivity and the reaction proceeding under mild conditions. The use of copper salts as catalysts often leads to challenges like contamination of the prepared triazoles. NiO/Cu2O nanocomposites (NCs) were utilized in Ni-CuAAC reactions as heterogeneous nanocatalysts to achieve the production of some 1,4-disubstituted 1,2,3-triazoles in high chemical yields under microwave irradiation.

RESULTS

The preparation of NiO/Cu2O NCs was performed through the coprecipitation of NiO nanoparticles on Cu2O surface. The prepared catalyst was used for catalyzing a reaction between benzoyl azides and phenylacetylene under optimized reaction conditions. The NiO/Cu2O NCs exhibited high catalytic activity compared to Cu2O nanoparticles. In addition, by utilizing ethanol–water as the solvent system under microwave irradiation, higher yields and efficient product separation were observed.

CONCLUSION

This study investigated the proficiency of NiO/Cu2O NCs as effective nanocatalysts for the selective synthesis of some 1,4-disubstituted 1,2,3-triazole derivatives. Employing heterogeneous nanoparticle catalysts, such as Cu2O and NiO/Cu2O, offers several advantages over homogeneous catalytic systems. These include easier catalyst separation and recovery, potential for catalyst reuse and the ability to fine-tune the catalytic properties by modulating the nanoparticle composition and structure. © 2024 Society of Chemical Industry (SCI).

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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
期刊最新文献
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