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Role of graphene oxide as a heterogeneous acid catalyst and benign oxidant for synthesis of benzimidazoles and benzothiazoles

机译:石墨烯氧化物作为非均相酸催化剂的作用和合成苯并咪唑和苯并噻唑的良性氧化剂

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摘要

We report the synthesis of benzothiazoles and benzimidazoles using graphene oxide as an effective catalyst with good yields and easy recyclability. Graphene oxide plays the dual role of a metal-free acid catalyst and an oxidizing agent. The mechanism of action of graphene oxide as a catalyst was confirmed using X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and transmission electron microscopy. Good yields were obtained at 60 degrees C as well as under ultrasonic irradiation at 35 degrees C with methanol as the solvent. Additionally, this is also the first report in which the regeneration of partially-reduced spent graphene oxide has been carried out to restore the oxygen containing functional groups and provide a path for the reuse of graphene oxide as the catalyst and oxidizing agent.
机译:我们用石墨烯氧化物作为有效催化剂报告苯并噻唑和苯并咪唑的合成,其产率良好,易再现性。 石墨烯氧化物起到无金属酸催化剂和氧化剂的双重作用。 使用X射线衍射,傅里叶变换红外光谱,拉曼光谱和透射电子显微镜确认作为催化剂的石墨烯作为催化剂的作用机理。 在60℃下,在35℃下以35℃的超声辐射获得良好的产率,用甲醇作为溶剂。 另外,这也是第一报告,其中已经进行了部分减少的废石墨烯氧化物的再生以恢复含氧官能团,并提供用于将石墨烯作为催化剂和氧化剂再利用的路径。

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  • 来源
    《RSC Advances》 |2016年第10期|共9页
  • 作者单位

    Inst Chem Technol Dept Chem Engn Nathalal Parekh Marg Mumbai 400019 Maharashtra India;

    Inst Chem Technol Dept Chem Engn Nathalal Parekh Marg Mumbai 400019 Maharashtra India;

    Inst Chem Technol Dept Chem Engn Nathalal Parekh Marg Mumbai 400019 Maharashtra India;

    Inst Chem Technol Dept Chem Engn Nathalal Parekh Marg Mumbai 400019 Maharashtra India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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