Facile Synthesis of 7-Aryl-benzo[<i>h</i>]tetrazolo[<i>5,1-b</i>]quinazoline-5,6-dione Fused Polycyclic Compounds by Using a Novel Magnetic Polyurethane Catalyst

Maleki, Ali; Aghaei, Morteza; Kari, Tooraj

doi:10.1080/10406638.2017.1325746

Cited by 48 publications

(17 citation statements)

References 48 publications

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“…Despite the good characteristics of the photocatalyst in water treatment, the lack of appropriate recovery of TiO 2 nanocomposites from treated water is a major problem when it comes to applying extensively. To overcome the problem of recovering catalytic nanoparticles from water, magnetic catalysts have been focused (Maleki and Kamalzare, 2014;Maleki et al, 2015;Maleki et al, 2016a;Maleki et al, 2016b;Maleki et al, 2017;Maleki et al, 2019b;Maleki et al, 2019c;Maleki et al, 2019a;Maleki et al, 2019d). After the water treatment process, the magnetic separation of Fe 3 O 4 /TiO 2 by using an external electromagnetic field recycles magnetic composites.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

et al. 2020

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The new nanocomposite with various molar ratios along with magnetic properties was fabricated via precipitation (assisted by ultrasonic) procedure. The photocatalytic effects of methylene blue (∼90% degradation for optimized sample in 100 min) for finding the optimized sample performed under visible light irradiation. Moreover, the photo-antibacterial impacts of bacteria culture environments were found with an optimized sample that had effective destruction of bacteria in comparison to control group. The cytotoxicity properties of panc1 cells and magnetic behaviors of the obtained nanomaterials were evaluated and its IC50 was about 500 mg/L. As an initial step, the structural, morphological and magnetic characteristics of the fabricated nanocomposites were evaluated by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) and MAP, UV-visible diffuse reflectance spectroscopy (DRS), and vibrating sample magnetometry (VSM) approaches. Based on SEM results, the size of nanoparticles in fabricated nanocomposite was nearly 50-70 nm for Fe 3 O 4 /SiO 2 /TiO 2 and 80-100 nm for Fe 3 O 4 /SiO 2 /TiO 2 /CeVO 4 . XRD results showed that desired nanocomposites were truly synthesized without any impurities.

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Section: Introductionmentioning

confidence: 99%

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

et al. 2020

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“…Similarly, 2,3-dihydroquinazolin-4-(1H)-ones and spiroquinazolin-4(3H)-ones derivatives were prepared with Fe 3 O 4 @SiO 2 @TiO 2 -OSO 3 H magnetic nanoparticles as a catalyst in the mixture ChCl:urea (1:2), by reaction of isatonic anhydride, anilines (or ammonium chloride) and cyclic aliphatic ketones or benzaldehyde derivatives [ 35 ]. The same eutectic mixture was also employed for the preparation of 7-aryl-benzo[h]tetrazolo[5,1-b]quinazoline-5,6-dione, employing a magnetic polymeric nanostructure, with DES-catalyst being recyclable up to six times [ 36 ]. Finally, a DES-coated metal-organic framework was employed for the multicomponent synthesis of 2-amino-4H-chromenes, although, in this case, reactions were carried out in a solvent-free fashion [ 37 ].…”

Section: Cyclization Reactionsmentioning

confidence: 99%

Deep Eutectic Solvents as à-la-Carte Medium for Transition-Metal-Catalyzed Organic Processes

Marset

Guillena

2022

Molecules

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Our society is facing a tremendous challenge to become more sustainable in every sphere of life. Regarding the chemical industry, one of the most significant issues to be addressed is the use of volatile organic compounds (VOCs) as solvents because they are petrol-derived and most of them are toxic and flammable. Among the possible solutions, deep eutectic solvents (DESs) have emerged as sustainable alternatives to VOCs in organic catalyzed transformations and other fields. The advantages of these new reaction media are not only related to their more benign physical and chemical properties and, for most of them, their renewable sources but also due to the possibility of being recycled after their use, increasing the sustainability of the catalyzed process in which they are involved. However, their use as media in catalytic transformations introduces new challenges regarding the compatibility and activity of known catalysts. Therefore, designed catalysts and “à-la-carte” DESs systems have been developed to overcome this problem, to maximize the reaction outcomes and to allow the recyclability of the catalyst/media system. Over the last decade, the popularity of these solvents has steadily increased, with several examples of efficient metal-catalyzed organic transformations, showing the efficiency of the catalysts/DES system, compared to the related transformations carried out in VOCs. Additionally, due to the inherent properties of the DES, unknown transformations can be carried out using the appropriated catalyst/DES system. All these examples of sustainable catalytic processes are compiled in this review.

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“…quinazoline-5,6-diones 111 in a deep eutectic solvent (DES) based on choline chloride and urea (Scheme 37). 105 The catalyst was readily recovered from the reaction mixture with the help of an external magnet and could be reused 6 times without signicant loss in activity.…”

Section: Aminoazaheterocycles As Binucleophilesmentioning

confidence: 99%

“…A. Maleki et al employed a Brönsted acid-functionalized magnetic polymeric nanocomposite, Ba 0.5 Sr 0.5 Fe 12 O 19 @PU-SO 3 H, for the synthesis of 7-aryl-benzo[ h ]tetrazolo[5,1- b ]quinazoline-5,6-diones 111 in a deep eutectic solvent (DES) based on choline chloride and urea ( Scheme 37 ). 105 The catalyst was readily recovered from the reaction mixture with the help of an external magnet and could be reused 6 times without significant loss in activity.…”

Section: Classificationmentioning

confidence: 99%

α-Aminoazoles/azines: key reaction partners for multicomponent reactions

et al. 2021

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Facile Synthesis of 7-Aryl-benzo[h]tetrazolo[5,1-b]quinazoline-5,6-dione Fused Polycyclic Compounds by Using a Novel Magnetic Polyurethane Catalyst

Cited by 48 publications

References 48 publications

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

Deep Eutectic Solvents as à-la-Carte Medium for Transition-Metal-Catalyzed Organic Processes

α-Aminoazoles/azines: key reaction partners for multicomponent reactions

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