期刊
RSC ADVANCES
卷 6, 期 10, 页码 8164-8172出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra19066e
关键词
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资金
- University Grants Commission of India
- Department of Science and Technology (DST), India
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.
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