Scholarlink

<p>This study presents the development of a highly efficient magnetic nanocatalyst made of Cu<sub>2</sub>O-CuO nanoparticles (NPs) supported on silica-coated iron oxide nanoparticles (Cu<sub>2</sub>O-CuO@Fe<sub>3</sub>O<sub>4</sub>-SiO<sub>2</sub>-imine nanostructure). SiO<sub>2</sub> was employed to stabilize Fe<sub>3</sub>O<sub>4</sub> by preventing aggregation and offering the potential for surface functionalization to immobilize catalysts. The grafting of imine over Fe<sub>3</sub>O<sub>4</sub>-SiO<sub>2</sub> reduces the leaching of Cu<sub>2</sub>O-CuO NPs. The catalyst's composition and structure were confirmed using various techniques, such as FT-IR, SEM-EDX, elemental mapping, HR-TEM, PXRD, XPS, ICP-AES, TGA-DTA, and VSM. The potentiality of the as-prepared catalyst was examined in synthesizing quinazolinone scaffolds via a reaction between 2-amino benzonitrile and various alcohol substrates. It was observed that 2-aminobenzonitrile with electron-donating groups afforded isolated yields of the desired products ranging from 92 to 94% and was found to be recyclable up to five cycles without apparent loss in activity.</p> Graphical abstract <p>Silica-coated iron oxide supported Cu2O-CuO heteronanostructure is an efficient magnetic catalyst for the facile synthesis of quinazolinone scaffolds <i>via</i> a reaction between 2-amino benzonitrile and alcohol substrates. It can be recycled up to 5 cycles without apparent loss in catalytic activity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cu2O-CuO@Fe3O4-SiO2-imine nanostructure: Magnetically separable and efficient catalyst for quinazolinone synthesis

  • 期刊论文

  • 发表日期：

    2025年12月22日

查看全文
  • Rajjyoti Gogoi,
  • Rashmirekha Nath,
  • Geetika Borah

摘要

This study presents the development of a highly efficient magnetic nanocatalyst made of Cu2O-CuO nanoparticles (NPs) supported on silica-coated iron oxide nanoparticles (Cu2O-CuO@Fe3O4-SiO2-imine nanostructure). SiO2 was employed to stabilize Fe3O4 by preventing aggregation and offering the potential for surface functionalization to immobilize catalysts. The grafting of imine over Fe3O4-SiO2 reduces the leaching of Cu2O-CuO NPs. The catalyst's composition and structure were confirmed using various techniques, such as FT-IR, SEM-EDX, elemental mapping, HR-TEM, PXRD, XPS, ICP-AES, TGA-DTA, and VSM. The potentiality of the as-prepared catalyst was examined in synthesizing quinazolinone scaffolds via a reaction between 2-amino benzonitrile and various alcohol substrates. It was observed that 2-aminobenzonitrile with electron-donating groups afforded isolated yields of the desired products ranging from 92 to 94% and was found to be recyclable up to five cycles without apparent loss in activity.

Graphical abstract

Silica-coated iron oxide supported Cu2O-CuO heteronanostructure is an efficient magnetic catalyst for the facile synthesis of quinazolinone scaffolds via a reaction between 2-amino benzonitrile and alcohol substrates. It can be recycled up to 5 cycles without apparent loss in catalytic activity.