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<p>This work reports the environment-friendly synthesis of nature-derived biochar-based catalyst for synthesis of pharmaceutically significant 2,3-dihydroquinazolin-4(1H)-ones. A Magnetic biochar catalyst was synthesized from coconut waste using a simple hydrothermal reactor followed by 2-step functionalization steps to achieve sulphonated magnetic biochar, Fe@SO<sub>3</sub>H-BC. The structural and morphological characterization of the synthesized catalysts was done using XRD, FTIR, FESEM and EDS. The catalytic activity of Fe@SO<sub>3</sub>H-BC was studied for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones by condensation of 2-aminobenzamide with carbonyls including acetophenones and aldehydes in solvent-free conditions, resulting in moderate to high yields 83–94% and 70–95%, respectively. The methodology offered advantages by giving an operationally easier and greener chemical route for fabrication of environmentally derived biochar-based catalyst showing notable catalytic activity, recyclability and versatility.</p>

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Coconut waste–derived sulfonated magnetic biochar: an efficient catalyst for the synthesis of 2,3-dihydroquinazolinone

  • 期刊论文

  • 发表日期：

    2025年9月30日

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  • Sarthak Sharma,
  • Gobind Kumar,
  • Navneet Kaur,
  • Gaurav Bhargava,
  • Rupesh Kumar

摘要

This work reports the environment-friendly synthesis of nature-derived biochar-based catalyst for synthesis of pharmaceutically significant 2,3-dihydroquinazolin-4(1H)-ones. A Magnetic biochar catalyst was synthesized from coconut waste using a simple hydrothermal reactor followed by 2-step functionalization steps to achieve sulphonated magnetic biochar, Fe@SO3H-BC. The structural and morphological characterization of the synthesized catalysts was done using XRD, FTIR, FESEM and EDS. The catalytic activity of Fe@SO3H-BC was studied for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones by condensation of 2-aminobenzamide with carbonyls including acetophenones and aldehydes in solvent-free conditions, resulting in moderate to high yields 83–94% and 70–95%, respectively. The methodology offered advantages by giving an operationally easier and greener chemical route for fabrication of environmentally derived biochar-based catalyst showing notable catalytic activity, recyclability and versatility.