Morpholinium glycolate as an efficient and reusable catalyst for the synthesis of bis(pyrazol-5-ol) derivatives under solvent-free conditions

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  • Mohd Akmal Shaikh1,
  • Mazahar Farooqui2,
  • Syed Abed*3,
  1. Post Graduate and Research Centre, Maulana Azad College, Aurangabad-431001(M.S), India.
  2. Dr. Rafiq Zakaria College for Women, Aurangabad-431001 (M.S), India.
  3. Government College of Arts and Science, Aurangabad- 431001 (M.S), India.

Published in Issue 2024-02-03

How to Cite

Shaikh, M. A., Farooqui, M., & Abed, S. (2024). Morpholinium glycolate as an efficient and reusable catalyst for the synthesis of bis(pyrazol-5-ol) derivatives under solvent-free conditions. Iranian Journal of Catalysis, 8(2). https://oiccpress.com/ijc/article/view/3995

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Abstract

In this paper, an environmentally benign access to synthesize Bis(pyrazol-5-ol) derivatives was developed through the one pot pseudo five component condensation reaction of phenyl hydrazine with ethyl acetoacetate, and different aryl/heteroaryl aldehydes using morpholinium glycolate as the homogeneous reusable catalyst under solvent-free conditions at 80 °C. Further, the ionic liquid was prepared and characterized by FT-IR, 1HNMR, 13CNMR and TG-DTG techniques. The present synthetic protocol offers excellent yields of the products, short reaction times, clean and simple work up, reusability of catalyst up to five runs, a significant reduction in cost, and eco-efficient alternative to the existing methods.

Keywords

  • Bis(pyrazol-5-ol)s,
  • Homogeneous catalyst,
  • Ionic Liquids,
  • Morpholinium glycolate
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