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Alireza Karimi

Alireza Karimi

Academic rank: Professor
ORCID: https://orcid.org/0000-0001-5006-8642
Education: PhD.
ScopusId: 57217189368
Faculty: Science
Address: Arak University
Phone:

Research

Title
Silica sulfuric acid magnetic nanoparticle: An efficient and eco-friendly catalyst for synthesis of spiro[2-amino-4H-pyran-oxindole]s
Type
JournalPaper
Keywords
magnetic nanoparticles, silica sulfuric acid, spiro[2-amino-4H-pyran-oxindole], isatin,ultrasound irradiation
Year
2015
Journal Canadian Journal of Chemistry
DOI
Researchers Alireza Karimi ، Meysam Sourinia ، Zeinab Dalirnasab ، Marzieh Karimi

Abstract

Silica sulfuric acid magnetic nanoparticles efficiently catalyze the one-pot, three-component reaction of isatins and malononitrile with dimedone, 1,3-dimethylbarbituric acid or 4-hydroxycoumarin in EtOH-H2O to afford the corresponding spiro[2-amino-4H-pyran-oxindole] derivatives in high yields under ultrasound irradiation at 60 °C. The heterogeneous nanocatalyst could be recovered easily from the reaction mixture using an external magnet and reused many times without significant loss of its catalytic activity.