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使用十二烷基硫酸钠合成基于钴铁氧体和氧化锌金属纳米粒子的膨润土及其作为苄基巴比妥香豆素合成催化剂的研究

Synthesis of cobalt- ferrite and zinc oxide metal nanoparticles based-bentonite using SDS and their investigation as catalysts in synthesis of benzylbarbiturocoumarins.

作者信息

Baminejhad Pegah, Sheikhhosseini Enayatollah, Yahyazadehfar Mahdieh

机构信息

Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran.

出版信息

Front Chem. 2024 Aug 12;12:1434488. doi: 10.3389/fchem.2024.1434488. eCollection 2024.

DOI:10.3389/fchem.2024.1434488
PMID:39189017
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11345271/
Abstract

In this research, a suitable and efficient CoFeO@ZnO@Bentonite nano-catalyst was designed and synthesized by using zinc oxide (ZnO) and cobalt ferrite (CoFeO) nanoparticles and bentonite by microwave irradiation. Characteristics of the synthesized nanocomposite were investigated by Fourier transform infrared (FT-IR), scanning electron microscope (SEM), energy dispersive X-ray (EDX), transmission electron microscope (TEM), X-ray diffraction (XRD), Bruner- Emmett-Teller (BET) and vibrating sample magnetometer (VSM) techniques. The produced catalyst was effectively employed as a supported solid acid catalyst in mildly agitated three-component reactions involving aromatic aldehydes, 4-hydroxycoumarin, and 1,3-dimethyl-barbituric acid in a single pot to produce benzylbarbiturocoumarins. Starting materials were condensed via three C-C bond formation by CoFeO@ZnO@Bentonite as an efficient, recyclable, and environmentally safe nanocatalyst to obtain target products. The advantages of this method include using a natural substrate, small amounts of catalyst, aqueous media, performing reactions at ambient temperature, simple separation and purification of products, and good yields with short reaction times.

摘要

在本研究中，通过微波辐射，利用氧化锌（ZnO）、钴铁氧体（CoFeO）纳米颗粒和膨润土设计并合成了一种合适且高效的CoFeO@ZnO@膨润土纳米催化剂。采用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、能量色散X射线光谱（EDX）、透射电子显微镜（TEM）、X射线衍射（XRD）、布鲁诺尔-埃米特-泰勒（BET）和振动样品磁强计（VSM）技术对合成的纳米复合材料的特性进行了研究。所制备的催化剂在温和搅拌的单釜三组分反应中有效地用作负载型固体酸催化剂，该反应涉及芳香醛、4-羟基香豆素和1,3-二甲基巴比妥酸，以制备苄基巴比妥香豆素。起始原料通过CoFeO@ZnO@膨润土作为一种高效、可回收且环境安全的纳米催化剂经由三个C-C键形成而缩合，从而获得目标产物。该方法的优点包括使用天然底物、少量催化剂、水相介质、在室温下进行反应、产物的简单分离和纯化以及短反应时间下的良好产率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5982/11345271/75b7c5ad40d2/fchem-12-1434488-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5982/11345271/1452c82dac54/FCHEM_fchem-2024-1434488_wc_sch2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5982/11345271/41e126648856/FCHEM_fchem-2024-1434488_wc_sch3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5982/11345271/5326d41fd50f/fchem-12-1434488-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5982/11345271/75b7c5ad40d2/fchem-12-1434488-g013.jpg

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