An Environment-Friendly Method for Green Synthesis of Pyranopyrazole Derivatives Catalyzed by CoCuFe <sub>2</sub> O <sub>4</sub> Magnetic Nanocrystals under Solvent-Free Conditions
Mahla Dadaei, Hossein Naeimi
Abstract
An efficient and rapid four component reaction of ethyl acetoacetate, hydrazine hydrate, malononitrile and different aldehydes at environmentally benign room temperature and solvent free conditions. This research has developed for synthesis of pyranopyrazole derivatives in the presence of CoCuFe2O4 magnetic nanocrystals as reusable catalyst. The catalyst prepared and characterized by FT-IR, XRD, SEM, EDX and VSM techniques. The products confirmed by spectroscopic and physical data such as; melting points, FT-IR and 1H NMR analyses.
Topics & Concepts
MalononitrileChemistryCatalysisEthyl acetoacetateEnvironmentally friendlyHydrazine (antidepressant)HydrateGreen chemistryNanocrystalSolventProton NMROrganic chemistryNuclear chemistryInorganic chemistryChemical engineeringReaction mechanismEngineeringChromatographyBiologyEcologyMulticomponent Synthesis of HeterocyclesSynthesis and biological activitySynthesis of Tetrazole Derivatives