Preparation and characterization of doped Sr.2Co.8Fe12O19 hexaferrite: An efficient heterogeneous catalyst for one pot synthesis of 1,4-dyhydropyridine derivativesâ€
| Main Authors: | A. S. Aswar, C. A. Ladole |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5644653 |
Daftar Isi:
- Department of Chemistry, Sant Gadge Baba Amravati University, Amravati-444 602, Maharashtra, India E-mail: aswaranand@gmail.com Manuscript received online 01 November 2018, accepted 19 November 2018 A clean and efficient method has been developed for the synthesis of 1,4-dihydropyridine derivatives using aromatic aldehyde, ethyl acetoacetate, and ammonium acetate using cobalt doped strontium hexaferrite under microwave irradiation conditions. This process offers an easy and efficient synthesis of 1,4-dihydropyridine derivatives with high yields. The advantages of this protocol are operational simplicity, its greenness with respect to mild reaction conditions, short reaction time, maximum yields of products, simple workup and an environmentally benign nature. The cobalt doped strontium hexaferrite catalyst was synthesized by the solution combustion method. The prepared catalyst was characterized by XRD, FT-IR, SEM and TG/DTA analysis. Furthermore, the catalyst could be reused up to four cycled without significant loss in activity. The synthesized compounds were confirmed using FT-IR, 1H and 13C NMR spectroscopic data and melting points compared with reported values.