2022
DOI: 10.1002/aoc.6768
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ZnFe2O4@SiO2‐ascorbic acid: Green, magnetic, and versatile catalyst for the synthesis of chromeno[2,3‐d] pyrimidine‐8‐amine and quinazoline derivatives

Abstract: In this research project, silica‐modified ZnFe2O4 magnetic nanoparticles were prepared in a simple, short, and straightforward way. Subsequently, an efficient catalyst through immobilization of ascorbic acid on the surface of silica‐coated ZnFe2O4 nanoparticles has been produced. The physical and chemical properties of ZnFe2O4@SiO2‐ascorbic acid were considered by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Ener… Show more

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Cited by 14 publications
(8 citation statements)
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“…Zolfigol and colleagues reported the synthesis of chromeno[2,3- d ]pyrimidine-8-amine ( 207 ) and quinazolines ( 209 ) catalysed by silica-modified ZnFe 2 O 4 MNPs (Scheme 62 ). 115 The ZnFe 2 O 4 prepared from Zn(NO 3 ) 2 ·6H 2 O was subjected to functionalisation with tetraethyl orthosilicate (TEOS) and ascorbic acid to prepare the final catalysts. Herein, SEM analysis revealed the NPs to have the particle size in the range of 47–55 nm.…”
Section: Aza- and Oxa-heterocycle Synthesis Catalysed By Mnpsmentioning
confidence: 99%
“…Zolfigol and colleagues reported the synthesis of chromeno[2,3- d ]pyrimidine-8-amine ( 207 ) and quinazolines ( 209 ) catalysed by silica-modified ZnFe 2 O 4 MNPs (Scheme 62 ). 115 The ZnFe 2 O 4 prepared from Zn(NO 3 ) 2 ·6H 2 O was subjected to functionalisation with tetraethyl orthosilicate (TEOS) and ascorbic acid to prepare the final catalysts. Herein, SEM analysis revealed the NPs to have the particle size in the range of 47–55 nm.…”
Section: Aza- and Oxa-heterocycle Synthesis Catalysed By Mnpsmentioning
confidence: 99%
“…After that, the reaction mixture was stirred at 25 1C for 34 h. Eventually, the product was separated using a magnet and washed with EtOH and deionized water five times, before drying at 25 1C. 28 2.4 Preparation of ZnFe 2 O 4 @SiO 2 @L-methionine-Zr MNPs…”
Section: Synthesis Of Znfe 2 Omentioning
confidence: 99%
“…As a main member of the ferrite family, ZnFe 2 O 4 is a promising potential for use as a novel catalytic support. 13,28,33,34 In addition, the surface hydroxyl groups of zinc ferrite facilitate its surface modification with a wide variety of organic compounds. 35,36…”
Section: Introductionmentioning
confidence: 99%
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