A
Amir Khojastehnezhad
Researcher at Ferdowsi University of Mashhad
Publications - 78
Citations - 1673
Amir Khojastehnezhad is an academic researcher from Ferdowsi University of Mashhad. The author has contributed to research in topics: Catalysis & Heterogeneous catalysis. The author has an hindex of 24, co-authored 75 publications receiving 1304 citations. Previous affiliations of Amir Khojastehnezhad include University of Isfahan & Islamic Azad University.
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Journal ArticleDOI
Caesium carbonate supported on hydroxyapatite‐encapsulated Ni0.5Zn0.5Fe2O4 nanocrystallites as a novel magnetically basic catalyst for the one‐pot synthesis of pyrazolo[1,2‐b]phthalazine‐5,10‐diones
Behrooz Maleki,Samaneh Barat Nam Chalaki,Samaneh Sedigh Ashrafi,Esmail Rezaee Seresht,Farid Moeinpour,Amir Khojastehnezhad,Reza Tayebee +6 more
TL;DR: In this article, a novel nanomagnetic basic catalyst of caesium carbonate supported on hydroxyapatite-coated Ni0.5Zn 0.5Fe2O4 magnetic nanoparticles was prepared.
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Silica Gel-Supported Polyphosphoric Acid (PPA-SiO2) Catalyzed One-Pot Multi-Component Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones and -thiones: An Efficient Method for the Biginelli Reaction
Mohsen Zeinali-Dastmalbaf,Abolghasem Davoodnia,Majid M. Heravi,Niloofar Tavakoli-Hoseini,Amir Khojastehnezhad,Hassan Ali Zamani +5 more
TL;DR: A green and efficient method for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and -thiones through one-pot three-component reaction of ethyl acetoacetate, an aryl aldehyde, and urea or thiourea in acetonitrile using silica gel-supported polyphosphoric acid (PPA-) as catalyst is described in this paper.
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Silica-coated magnetic NiFe2O4 nanoparticles-supported H3PW12O40; synthesis, preparation, and application as an efficient, magnetic, green catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives
Behrooz Maleki,Hossein Eshghi,Mohammad Barghamadi,Negar Nasiri,Amir Khojastehnezhad,Samaneh Sedigh Ashrafi,Omid Pourshiani +6 more
TL;DR: In this paper, a powerful, magnetic, supported, acid catalyst, NiFe2O4@SiO2−H3PW12O40, was prepared by chemical support of Keggin (H3pW12o40) heteropolyacid (HPA) on silica-coated NiFe 2O4 magnetic nanoparticles.
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Carbon-Based Solid Acid as an Efficient and Reusable Catalyst for the Synthesis of 1,8-Dioxodecahydroacridines Under Solvent-Free Conditions
TL;DR: In this article, a carbon-based solid acid catalyst was found to be highly efficient, eco-friendly and recyclable heterogeneous catalyst for the multicomponent reaction of dimedone, aromatic aldehydes, and a nitrogen source (ammonium acetate or aromatic amines) under solvent-free conditions, giving rise to 1,8-dioxodecahydroacridines in high yields.
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Green synthesis of tetrahydrobenzo[b]pyrans, pyrano[2,3-c]pyrazoles and spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles catalyzed by nano-structured diphosphate in water
TL;DR: A green and recoverable nano-structured diphosphate (Na2CaP2O7) was synthesized and fully characterized using FT-IR spectra, X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), and energy-dispersive Xray spectroscopy (EDX) analysis as discussed by the authors.