Preparation of Fe3O4@C-dots as a recyclable magnetic nanocatalyst using Elaeagnus angustifolia and its application for the green synthesis of formamidines,Applied Organometallic Chemistry

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Preparation of Fe3O4@C-dots as a recyclable magnetic nanocatalyst using Elaeagnus angustifolia and its application for the green synthesis of formamidines
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2021-09-13 , DOI: 10.1002/aoc.6387
Mahnaz Ghereghlou ₁ , Abbas Ali Esmaeili ₁ , Majid Darroudi _{2,

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Affiliation

This work describes a novel and simple procedure for successfully synthesizing formamidines by using Fe₃O₄@C-dots in the role of an effective and reusable catalyst throughout a solvent-free set-up. The formamidine derivatives were easily prepared through aromatic amines with triethyl orthoformate in the company of Fe₃O₄@C-dots. According to the experimental outcomes, the obtained formamidines in the presence of Fe₃O₄@C-dots exhibited good to high yield values. In the following, we distinguished the prepared catalyst by applying field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM) techniques. Furthermore, the evaluation of catalytic activity was done in the course of synthesizing formamidine derivatives. Among the advantages of this method, one can highlight the facts of solvent-free conditions, the simplicity of operation, high yields, nonacidic catalyst, and the reusability of nanocatalyst for at least five cycles.

中文翻译：

Fe3O4@C-dots作为可回收磁性纳米催化剂的胡杨制备及其在甲脒绿色合成中的应用

这项工作描述了一种通过使用 Fe ₃ O ₄ @C-dots 在整个无溶剂装置中充当有效且可重复使用的催化剂来成功合成甲脒的新颖且简单的程序。在 Fe ₃ O ₄ @C-dots公司的帮助下，甲脒衍生物很容易通过芳香胺与原甲酸三乙酯制备。根据实验结果，在Fe ₃ O ₄存在下得到的甲脒@C-dots 表现出良好到高的屈服值。下面通过场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）、能量色散X射线（EDX）、X射线衍射（XRD）、傅里叶变换红外（FTIR）对制备的催化剂进行区分。 ) 和振动样品磁强计 (VSM) 技术。此外，在合成甲脒衍生物的过程中还对催化活性进行了评价。在该方法的优点中，可以突出无溶剂条件、操作简单、产率高、非酸性催化剂以及纳米催化剂至少可重复使用五个循环的事实。

更新日期：2021-10-20

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