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Effective and selective aerobic oxidation of primary and secondary alcohols using CoFe2O4@HT@Imine‐CuII and TEMPO in the air atmosphere
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-10-18 , DOI: 10.1002/aoc.6074
Mehri Salimi 1 , Farzaneh Esmaeli‐nasrabadi 1 , Reza Sandaroos 1
Affiliation  

In this study, we present a versatile and easy procedure for modifying a cobalt ferrite nanoparticle step by step. A new nanocatalyst was prepared via CuII immobilized onto CoFe2O4@HT@Imine. The catalyst was fully characterized by Fourier‐transform infrared (FT‐IR), energy‐dispersive X‐ray spectroscopy (EDX), field emission scanning electron microscopy (FE‐SEM), X‐ray diffraction (XRD), and vibrating sample magnetometer (VSM) analyses. The current procedure as a green protocol offers benefits including a simple operational method, an excellent yield of products, mild reaction conditions, minimum chemical wastes, and short reaction times. Without any significant reduction in the catalytic performance, up to five recyclability cycles of the catalyst were obtained. The optimization results suggest that the best condition in the oxidation of benzyl alcohol derivatives is 0.003 g of the CoFe2O4@HT@Imine‐CuII catalyst, TEMPO, at 70°C under solvent‐free condition and air.

中文翻译:

使用CoFe2O4 @ HT @ Imine‐CuII和TEMPO在空气中对伯醇和仲醇进行有效和选择性的好氧氧化

在这项研究中,我们提出了一种通用且简便的步骤,可逐步修饰钴铁氧体纳米颗粒。通过固定在CoFe 2 O 4上的Cu II制备了一种新的纳米催化剂。@ HT @ Imine。通过傅里叶变换红外(FT-IR),能量分散X射线光谱(EDX),场发射扫描电子显微镜(FE-SEM),X射线衍射(XRD)和振动样品磁力计对催化剂进行了全面表征(VSM)分析。作为绿色协议的当前程序具有以下优点:操作方法简单,产品收率高,反应条件温和,化学废物最少,反应时间短。在没有显着降低催化性能的情况下,获得了多达五个催化剂的可循环性循环。优化结果表明,苯甲醇衍生物氧化的最佳条件是0.003 g CoFe 2 O 4 @ HT @ Imine‐Cu II 催化剂,TEMPO,在无溶剂条件和空气下于70°C进行。
更新日期:2020-12-22
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