Introduction of a trinuclear manganese(III) catalyst on the surface of magnetic cellulose as an eco-benign, efficient and reusable novel heterogeneous catalyst for the multi-component synthesis of new derivatives of xanthene,RSC Advances

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Introduction of a trinuclear manganese(III) catalyst on the surface of magnetic cellulose as an eco-benign, efficient and reusable novel heterogeneous catalyst for the multi-component synthesis of new derivatives of xanthene
RSC Advances ( IF 3.9 ) Pub Date : 2021-1-21 , DOI: 10.1039/d0ra09420j
Pouya Ghamari Kargar ₁ , Ghodsieh Bagherzade ₁ , Hossein Eshghi ₂

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In this work, the new trinuclear manganese catalyst defined as Fe₃O₄@NFC@NNSM-Mn(III) was successfully manufactured and fully characterized by different techniques, including FT-IR, XRD, TEM, SEM, EDX, VSM, and ICP analysis. There have been reports of the use of magnetic catalysts for the synthesis of xanthine derivatives. The critical potential interest in the present method include short reaction time, high yields, recyclability of the catalyst, easy workup, and the ability to sustain a variety of functional groups, which give economical as well as ecological rewards. Also, the synthesized catalyst was used as a recyclable trinuclear catalyst in alcohol oxidation reactions at 40 °C. The magnetic catalyst activity of Fe₃O₄@NFC@NNSM-Mn(III) could be attributed to the synergistic effects of the catalyst Fe₃O₄@NFC@NNS-Mn(III) with melamine. Employing a sustainable and safe low temperature, using an eco-friendly solvent, no need to use any additive, and long-term stability and magnetic recyclability of the catalyst for at least six successive runs are the advantages of the current protocol towards green chemistry. This protocol is a benign, environmentally friendly method for heterocycle synthesis.

中文翻译：

在磁性纤维素表面引入三核锰（III）催化剂作为生态友好、高效且可重复使用的新型多相催化剂，用于多组分合成呫吨新衍生物

在这项工作中，成功制备了新型三核锰催化剂Fe ₃ O ₄ @NFC@NNSM-Mn( III )，并通过不同的技术（包括FT-IR、XRD、TEM、SEM、EDX、VSM和ICP 分析。已有报道使用磁性催化剂合成黄嘌呤衍生物。本方法的关键潜在兴趣包括反应时间短、产率高、催化剂的可回收性、易于后处理以及维持多种官能团的能力，这提供了经济和生态回报。此外，合成的催化剂还可作为可回收的三核催化剂用于40℃下的醇氧化反应。 Fe ₃ O ₄ @NFC@NNSM-Mn( III ) 的磁性催化活性可能归因于催化剂 Fe ₃ O ₄ @NFC@NNS-Mn( III ) 与三聚氰胺的协同效应。采用可持续且安全的低温、使用环保溶剂、无需使用任何添加剂以及催化剂至少连续六次运行的长期稳定性和磁性可回收性是当前绿色化学协议的优势。该方案是一种良性、环境友好的杂环合成方法。

更新日期：2021-01-21

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