Synthesis and characterization of CoFe2O4@SiO2@NH-NH2-PCuW as an acidic nano catalyst for the synthesis of 1,4-benzodiazepines and a powerful dye remover

Savari, Ali; Heidarizadeh, Fariba; Pourreza, Nahid

doi:10.1016/j.poly.2019.03.046

Cited by 20 publications

(8 citation statements)

References 61 publications

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“…At the last temperature range, above 400 °C is related to the complete decomposition of the catalyst. 72 The successful surface modification of CoFe 2 O 4 NPs was confirmed via the achieved TGA curve.…”

Section: Resultsmentioning

confidence: 74%

An efficient and eco-compatible multicomponent synthesis of 2,4,5-trisubstituted imidazole derivatives using modified-silica-coated cobalt ferrite nanoparticles with tungstic acid

2023

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Section: Resultsmentioning

confidence: 74%

An efficient and eco-compatible multicomponent synthesis of 2,4,5-trisubstituted imidazole derivatives using modified-silica-coated cobalt ferrite nanoparticles with tungstic acid

2023

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“…And the last temperature range above 400°C is related to the complete decomposition of the catalyst. [ 70 ] The successful surface modification of CoFe 2 O 4 NPs has been confirmed via the achieved TGA curve.…”

Section: Resultsmentioning

confidence: 81%

“…The first weight loss below 200 C is distributed to the adsorbed water moisture elimination (9.56%).The second weight loss between 200 and 400 C is a testimony of the decomposition of organic fractions (41.17%). And the last temperature range above 400 C is related to the complete decomposition of the catalyst [70]. The…”

mentioning

confidence: 99%

An effective and eco‐friendly sonochemical multicomponent synthesis of trisubstituted imidazoles via modified silica‐coated cobalt ferrite nanoparticles by tungstic acid

Kermanizadeh

Naeimi

2023

Applied Organom Chemis

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This research is providing a method for the synthesis of 2,4,5-trisubstituted imidazole derivatives based on pursuing the green chemistry principles. Therefore, a one-pot multicomponent cyclocondensation reaction through aldehyde interaction with ammonium acetate and 1,2-diketone was carried out in EtOH:H 2 O solvent under ultrasound irradiation. This protocol was utilized as an eco-effective synthetic route by applying CoFe 2 O 4 @SiO 2 @(-CH 2 ) 3 OWO 3 H nanocomposite as a nanocatalyst. The stabilized tungstic acid on 3-chloropropyl anchored to SiO 2 -coated CoFe 2 O 4 magnetic nanoparticles was designed, prepared, and applied as a recyclable heterogeneous acid catalyst to attain high product yields and short reaction times. The structure of nanocatalyst was confirmed by using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), and Brunauer-Emmett-Teller (BET) techniques, and the obtained organic derivatives were examined through melting point, FT-IR, and 1 H NMR analyses.

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“…A novel and eco-friendly one-pot synthetic methodology of 1,5-BZDs (23) using CoFe 2 O 4 @SiO 2 @NH-NH 2 -PCuW as a magnetic nanocatalyst was developed by Savari and coworkers. 84 The catalyst has acidic properties and the presence of Cu increased the acidity by enhancing the electron deciency of polyoxometalate. The protocol comprised the use of OPD (1), dimedone (21b) and aromatic aldehyde (22) under a solvent-free system at 80 °C and gave 96% yield in 15 min.…”

Section: 5-bzdsmentioning

confidence: 99%

Synthetic aspects of 1,4- and 1,5-benzodiazepines usingo-phenylenediamine: a study of past quinquennial

Teli¹,

Teli²,

Soni³

et al. 2023

RSC Adv.

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Synthesis and characterization of CoFe2O4@SiO2@NH-NH2-PCuW as an acidic nano catalyst for the synthesis of 1,4-benzodiazepines and a powerful dye remover

Cited by 20 publications

References 61 publications

An efficient and eco-compatible multicomponent synthesis of 2,4,5-trisubstituted imidazole derivatives using modified-silica-coated cobalt ferrite nanoparticles with tungstic acid

An efficient and eco-compatible multicomponent synthesis of 2,4,5-trisubstituted imidazole derivatives using modified-silica-coated cobalt ferrite nanoparticles with tungstic acid

An effective and eco‐friendly sonochemical multicomponent synthesis of trisubstituted imidazoles via modified silica‐coated cobalt ferrite nanoparticles by tungstic acid

Synthetic aspects of 1,4- and 1,5-benzodiazepines usingo-phenylenediamine: a study of past quinquennial

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