Document Type : Original Research Article
Authors
1 Department of Chemistry, Payame Noor University, Abhar, Iran
2 aDepartment of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, IRAN
Abstract
Highly substituted 1,4-dihydropyrano[2,3-c]pyrazole derivatives were synthesized by four-component reaction of aromatic aldehydes, malononitrile, ethyl acetoacetate and various phenylhydrazine, using nickel ferrite as a recyclable nanocatalyst by a grinding method under solvent-free and thermal conditions. The reaction has the advantages of good yields, less pollution, ease of separation of the desired products, and of being environment friendly. A possible mechanism for this reaction was proposed.
Highly substituted 1,4-dihydropyrano[2,3-c]pyrazole derivatives were synthesized by four-component reaction of aromatic aldehydes, malononitrile, ethyl acetoacetate and various phenylhydrazine, using nickel ferrite as a recyclable nanocatalyst by a grinding method under solvent-free and thermal conditions. The reaction has the advantages of good yields, less pollution, ease of separation of the desired products, and of being environment friendly. A possible mechanism for this reaction was proposed.
Graphical Abstract
Keywords
- 1
- 4-Dihydropyrano[2
- 3-c]pyrazoles
- one-pot synthesis
- four component reaction
- nickel-ferrite nanoparticles nanocatalyst
Main Subjects