Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones

Eshghi, Hossein; Ali, Javid; Khojastehnezhad, Amir; Moeinpour, Farid; Bamoharram, Fatemeh F.; Bakavoli, Mehdi; Mirzaei, Masoud

doi:10.1016/s1872-2067(14)60265-5

Cited by 41 publications

(16 citation statements)

References 53 publications

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“…It was underlined that the material crystallinity is sensitive to the calcination temperature [49,50]; an increase in the latter can favor the oxide formation. Furthermore, a well-dispersed cobalt species on the support was observed when the system was amorphous [51].…”

Section: Catalysts Characterizationmentioning

confidence: 98%

Cobalt supported on alumina as green catalyst for Biginelli reaction in mild conditions: effect of catalyst preparation method

Khiar

Mazari

Bennini

et al. 2017

Green Processing and Synthesis

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Cobalt supported on alumina (10 wt% Co/Al 2 O 3 ) was synthesized by three different methods; sol-gel (SG), microemulsion (ME) and impregnation (IMP). The materials were characterized by the Brunauer-Emmett-Teller (BET) method, X-ray diffraction (XRD), X-ray fluorescence, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis. Their catalytic activity was investigated toward the formation of Biginelli reaction products, 3,4-dihydropyrimidin(1H)-ones (DHPMs). The catalysts were found to be efficient for this reaction with yields between 50% and 71% and can be reused without great loss of efficiency. Among the catalytic systems, that prepared by the SG method is the most active with 71% of DHPMs yield under solvent free conditions at 100°C for 1 h of reaction time.

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Section: Catalysts Characterizationmentioning

confidence: 98%

Cobalt supported on alumina as green catalyst for Biginelli reaction in mild conditions: effect of catalyst preparation method

Khiar

Mazari

Bennini

et al. 2017

Green Processing and Synthesis

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“…The enhancement in the H 2 storage performances of MgH 2 by adding NiFe 2 O 4 nanoparticles is primarily ascribed to intermetallic Fe 7 Ni 3 and (Fe, Ni) phases during the desorption procedure, which act as the real catalyst in the 7 mol.% NiFe 2 O 4 -doped sample. As an example of another application, a magnetic acidic catalyst comprising Preyssler (H 14 [NaP 5 W 30 O 110 ]) heteropoly acid supported on silica coated nickel ferrite nanoparticles (NiFe 2 O 4 @SiO 2 ) was investigated for the synthesis of bis(dihydropyrimidinone)benzene and 3,4dihydropyrimidin-2(1H)-ones derivatives by the Biginelli reaction [108]. With the catalyst, the reactions occurred in less than 1 h with good to excellent yields.…”

Section: Ferritesmentioning

confidence: 99%

Iron-based Nanomaterials in the Catalysis

Kharisov¹,

Kharissova²,

Dias³

et al. 2016

Advanced Catalytic Materials - Photocatalysis and Other Current Trends

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Abstract"vailable data on catalytic applications of the iron-containing nanomaterials are reviewed. Main synthesis methods of nZVI, nano-sized iron oxides and hydroxides, core-shell and alloy structures, ferrites, iron-containing supported forms, and composites are described. Supported structures include those coated and on the basis of polymers or inert inorganic materials i.e., carbon, titania or silica . Description of catalytic processes includes the decomposition reactions in particular photocatalytic processes , reactions of dehydrogenation, oxidation, alkylation, C C coupling, among a series of other processes. Certain attention is paid to magnetic recovery of catalysts from reaction systems and their reuse up to several runs almost without loss of catalytic activity.

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“…Herein, in continuation of our interest to perovskite-type oxides [21,22], and our works with solid acids as heterogeneous catalyst in organic reactions [23][24][25][26][27][28], in this study we wish to report the synthesis of imidazole derivatives (3a-j) via a one-pot three-component condensation of 9,10-phenanthraquinone (1), aromatic aldehyde (2a-j), and ammonium acetate in the existence of perovskite-type oxide La 0.5 Pb 0.5 MnO 3 (LPMO) nanoparticles and La 0.5 Pb 0.5 MnO 3 supported on silica (S-LPMO) as a new catalyst, in reflux and solvent-free conditions (Scheme 1). Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Efficientone-pot synthesis of imidazoles catalyzed by silica-supported La0.5Pb0.5MnO3 nano particles as anovel and reusable perovskite oxide

Zahedi¹,

Ali²,

Mohammadi³

et al. 2018

Bull. Chem. Soc. Eth.

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Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones

Cited by 41 publications

References 53 publications

Cobalt supported on alumina as green catalyst for Biginelli reaction in mild conditions: effect of catalyst preparation method

Cobalt supported on alumina as green catalyst for Biginelli reaction in mild conditions: effect of catalyst preparation method

Iron-based Nanomaterials in the Catalysis

Efficientone-pot synthesis of imidazoles catalyzed by silica-supported La0.5Pb0.5MnO3 nano particles as anovel and reusable perovskite oxide

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