Green synthesis of novel 5-amino-bispyrazole-4-carbonitriles using a recyclable Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@vanillin@thioglycolic acid nano-catalyst
Mohammad Nikpassand, Leila Zare Fekri, Rajender S. Varma, Lida Hassanzadi, Farhad Sedighi Pashaki
Abstract
C NMR, and FTIR spectra and elemental analyses. This new procedure has notable advantages such as operational simplicity, excellent yields, short reaction time, easy work-up, eco-friendliness and nontoxic catalyst. Also the catalyst can be easily recovered by an external magnetic field and reused for six consecutive reaction cycles without significant loss of activity.
Topics & Concepts
Thioglycolic acidVanillinCatalysisNano-ChemistryNuclear chemistryGreen chemistryBrønsted–Lowry acid–base theoryOrganic chemistryCombinatorial chemistryMaterials scienceReaction mechanismComposite materialMulticomponent Synthesis of HeterocyclesChemical Synthesis and ReactionsSynthesis and Biological Evaluation