A Novel Magnetic Nanocatalyst Fe3O4@TiO2-H5IO6 for the Green Synthesis of 4- Substituted-1,5-benzodiazepine Derivatives | [Journal of Chemical Society of Pakistan • 2021]

Author(s):

1. Fatemeh Ahmadzadeh: Department of Chemistry, Yasouj University,Yasouj, PO Box 353,Iran

2. Bahador Karami: Department of Chemistry, Yasouj University,Yasouj, PO Box 353,Iran

3. Mahnaz Farahi: Department of Chemistry, Yasouj University,Yasouj, PO Box 353,Iran

4. Jamileh Etemad: Department of Chemistry, Yasouj University,Yasouj, PO Box 353,Iran

Abstract:

In this study, periodic acid-functionalized magnetic support (Fe3O4@TiO2-H5IO6) as a new, benign and recyclable nanocatalyst was prepared by anchoring / periodic acid onto TiO2-coated nano-Fe3O4. This catalyst was applied to achieve a high-efficiency, low-cost and eco-friendly approach for synthesizing 4-substituted-1,5-benzodiazepines with the multicomponent reactions of aromatic aldehydes, o-phenylenediamine, and dimedone. The / periodic acid group on Fe3O4@TiO2 possesses both Lewis and Brønsted acidity, which is responsible for the high catalyst activity. The obtained results show that the catalyst performance has been acceptable in the presented research. / The catalyst could be recovered and reused up to six times without any notable decrease in its activity.

Page(s): 456-465

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 43, Issue: 4, Year: 2021

Keywords:

Benzodiazepine , Fe3O4 , TiO2 , Periodic acid , Nanocatalyst

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