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Abstract <p>Carbon microspheres co-decorated with nanosized iron sulfide and magnetite nanoparticles were synthesized by carbonizing an iron(III) sulfate-loaded polystyrene–divinylbenzene-based iminodiacetate-type cation-exchange resin in an inert atmosphere at 600°C for 4 h. The synthesized material was successfully employed as a magnetically separable heterogeneous catalyst for the green synthesis of 4,4′-(arylmethylene)­bis(1<i>H</i>-pyrazol-5-ols) via a one-pot pseudo-three-component condensation of aldehydes and 3-methyl-5-pyrazolone. The developed protocol offers several advantages, including high yields, short reaction times, simple work-up procedure, and catalyst reusability. Hence, it represents a valuable contribution to green and sustainable chemistry.</p>

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Carbon Microspheres Co-decorated with Nanosized Iron Sulfide and Magnetite Nanoparticles as a Magnetically Separable Heterogeneous Catalyst for the Green Synthesis of 4,4′-(Arylmethylene)bis(1H-pyrazol-5-ols)

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • A. V. Dhirbassi,
  • S. S. Kauthale,
  • L. Kótai,
  • T. Pasinszki,
  • R. P. Pawar,
  • S. U. Tekale

摘要

Abstract

Carbon microspheres co-decorated with nanosized iron sulfide and magnetite nanoparticles were synthesized by carbonizing an iron(III) sulfate-loaded polystyrene–divinylbenzene-based iminodiacetate-type cation-exchange resin in an inert atmosphere at 600°C for 4 h. The synthesized material was successfully employed as a magnetically separable heterogeneous catalyst for the green synthesis of 4,4′-(arylmethylene)­bis(1H-pyrazol-5-ols) via a one-pot pseudo-three-component condensation of aldehydes and 3-methyl-5-pyrazolone. The developed protocol offers several advantages, including high yields, short reaction times, simple work-up procedure, and catalyst reusability. Hence, it represents a valuable contribution to green and sustainable chemistry.