Preparation, characterization, and first catalytic application of a novel phosphotungstic acid-containing ionic liquid immobilized on CuFe2O4@SiO2 magnetic nanoparticles in the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones
- Authors: Hosseininasab N.1, Davoodnia A.1, Rostami-Charati F.2, Khojastehnezhad A.3
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Affiliations:
- Department of Chemistry, Mashhad Branch
- Department of Chemistry, Faculty of Science
- Young Researchers Club and Elites, Mashhad Branch
- Issue: Vol 87, No 10 (2017)
- Pages: 2436-2443
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/221480
- DOI: https://doi.org/10.1134/S1070363217100267
- ID: 221480
Cite item
Abstract
A novel heterogeneous acidic ionic liquid based on functionalized imidazolium salt of phosphotungstic acid (H3PW12O40, denoted as PW), immobilized on CuFe2O4@SiO2 magnetic nanoparticles, denoted as CuFe2O4@SiO2@C3-Imid-C4SO3-PW, was prepared and characterized using FT-IR, SEM, EDX, and VSM techniques. High activity of the prepared material as a novel catalyst was evaluated in one-pot synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones by reaction of phthalhydrazide with an aromatic aldehyde and malononitrile under solvent-free conditions. The process gave high yields of the products over short reaction time. The catalyst was efficiently recovered by magnetic decantation and used repeatedly without significant loss of its activity.
About the authors
N. Hosseininasab
Department of Chemistry, Mashhad Branch
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 91756-87119
A. Davoodnia
Department of Chemistry, Mashhad Branch
Author for correspondence.
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 91756-87119
F. Rostami-Charati
Department of Chemistry, Faculty of Science
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Gonbad
A. Khojastehnezhad
Young Researchers Club and Elites, Mashhad Branch
Email: adavoodnia@mshdiau.ac.ir
Iran, Islamic Republic of, Mashhad, 91756-87119