Synthesis of water-dispersed magnetic nanoparticles (H2O-DMNPs) of β-cyclodextrin modified Fe3O4 and its catalytic application in Kabachnik–Fields multicomponent reaction

Rostamnia, Sadegh; Doustkhah, Esmail

doi:10.1016/j.jmmm.2015.03.064

Cited by 62 publications

(12 citation statements)

References 27 publications

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“…The IMB should be collected to research morphology and magnetism after each incubation so that we can suit the remedy to the case and improve the performance of IMB in our future work. On the other hand, the κ-carrageenase will also try to immobilize on Fe 3 O 4 -chitosan carriers as reusable biocatalyst. , Moreover, other types of carriers could be tested to immobilize strain TF-332 or κ-carrageenase including graphene oxide, modified Fe 3 O 4 -chitosan nanocomposites, nanomagnetically sulfuric acid, Fe 3 O 4 /β-cyclodextrin, and so forth.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, the κ-carrageenase will also try to immobilize on Fe 3 O 4 -chitosan carriers as reusable biocatalyst. 35,36 Moreover, other types of carriers could be tested to immobilize strain TF-332 or κ-carrageenase including graphene oxide, 35 modified Fe 3 O 4 -chitosan nanocomposites, 37 nanomagnetically sulfuric acid, 38 Fe 3 O 4 /β-cyclodextrin, 39 and so forth.…”

Section: ■ Discussionmentioning

confidence: 99%

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Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres

Guo

Zhou

Chen

et al. 2017

J. Agric. Food Chem.

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In this study, immobilized bacteria (IMB) microsphere was prepared by embedding κ-carrageenase-producing Thalassospira sp. Fjfst-332 (TF332) onto a magnetic FeO-chitosan carrier. The performance of FeO-chitosan carrier was optimized by comparing its bacteria immobilization capacity at different FeO:chitosan ratios and temperatures, while the functions of IMB microspheres were characterized by examining their κ-carrageenase production at different temperatures, pH's, and reuse cycles. At the 1:1 (w:w) FeO:chitosan ratio, the FeO-chitosan carriers possessed sufficient anchoring capacity for bacterial immobilization without significant compromise of their magnetism for magnetic separation of IMB from culture media. The spectroscopic analysis of IMB microspheres indicated that the immobilization of TF332 might affect the amide groups in chitosan. Compared to free bacteria, IMB can produce κ-carrageenase at higher temperature, wider pH range, and faster rate. More importantly, the κ-carrageenase-producing activity was sustained for at least seven reuse cycles. The major κ-carrageenan degradation products of IMB-derived κ-carrageenase were the oligosaccharides containing two to six monosaccharide units. Overall, this FeO-chitosan-TF-332 microsphere has the potential to become a stable and reusable platform for large-scale production of κ-carrageenan oligosaccharides.

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Section: Discussionmentioning

confidence: 99%

Section: ■ Discussionmentioning

confidence: 99%

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres

Guo

Zhou

Chen

et al. 2017

J. Agric. Food Chem.

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“…Meanwhile, the multicomponent reaction via Kabachnik-Fields is still a crucial and highly valuable method for their synthesis using a wide range of catalysts, such as Lewis and Brønsted acids [29][30][31], organocatalysts [32][33][34], nano-materials [35], heteropolyacids [36] and β-cyclodextrin [37].…”

Section: Introductionmentioning

confidence: 99%

Full factorial optimization of α-aminophosphonates synthesis using diphenylphosphinic acid as efficient organocatalyst

Ferrah

Lakoud

Bendjeffal

et al. 2022

Reac Kinet Mech Cat

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Diphenylphosphinic acid is used as an e cient and simple catalyst for the synthesis of the αaminophosphonates by multicomponent Kabachnik-Fields reaction in one pot of aromatic aldehyde, aniline and diethylphosphite. Three physicochemical factors including catalyst amount, reaction time and medium temperature were optimized using a full factorial experiment design (FFD). Additionally, a quadratic polynomial regression model was applied for the analysis of the experimental data at a con dence level of 95% with p-values < 0.05. The high signi cation effect of the reaction time and the medium temperature on the α-aminophosphonates synthesis were con rmed by the statistical analysis. Besides, the diphenylphosphinic acid amount shows an effect on the reaction yield. ANOVA exhibit that the coe cient determination of this model up to 99.25%. This eco-friendly procedure was extended for the preparation of series of the α-aminophosphonates in ethanol as green solvent, giving the desired products with high chemical yields up to 90%.

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“…The use of magnetic nanoparticles (Fe 3 O 4 MNPs) as a core to support the catalyst in organic transformation has become quite popular in chemistry. Because they include unique features such as high dispersion and reactivity, easy separation under external permanent magnetic fields and reusability, pairing with two or multidentate ligands or inorganic structures [1][2][3][4][5][6]. The use of magnetic nanoparticles may be restricted for reasons such as deformation and aggregation during the chemical process [7].…”

Section: Introductionmentioning

confidence: 99%

Fe3O4@urea/HITh-SO3H as an efficient and reusable catalyst for the solvent-free synthesis of 7-aryl-8H-benzo[h]indeno[1,2-b]quinoline-8-one and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives

2020

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AbstractIn this study, Fe3O4@urea/HITh-SO3H MNPs as a new, efficient, and recyclable solid acid magnetic nanocatalyst was synthesized and characterized using various methods including Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, energy-dispersive X-ray spectroscopy, and X-ray powder diffraction. After the characterization of this new magnetic nanocatalyst, it was efficiently utilized for the promotion of the one-pot synthesis of 7-aryl-8H-benzo[h]indeno[1,2-b]quinoline-8-one and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives via three-component reaction of the 1,3-indanedione, aldehyde, and 1-naphthylamine/1,3-dimethyl-6-aminouracil under solvent-free conditions at 80°C. The procedure gave the desired heterocyclic structures in high-to-excellent yields and short reaction times. Also because of the magnetic nature of the nanocatalyst, it can be separated with an external magnetic field and reused at least six runs without any considerable decrease in the catalytic behavior.

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Synthesis of water-dispersed magnetic nanoparticles (H2O-DMNPs) of β-cyclodextrin modified Fe3O4 and its catalytic application in Kabachnik–Fields multicomponent reaction

Cited by 62 publications

References 27 publications

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres

Full factorial optimization of α-aminophosphonates synthesis using diphenylphosphinic acid as efficient organocatalyst

Fe3O4@urea/HITh-SO3H as an efficient and reusable catalyst for the solvent-free synthesis of 7-aryl-8H-benzo[h]indeno[1,2-b]quinoline-8-one and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives

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Synthesis of water-dispersed magnetic nanoparticles (H2O-DMNPs) of β-cyclodextrin modified Fe3O4 and its catalytic application in Kabachnik–Fields multicomponent reaction

Cited by 62 publications

References 27 publications

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe3O4-Chitosan Microspheres

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe3O4-Chitosan Microspheres

Full factorial optimization of α-aminophosphonates synthesis using diphenylphosphinic acid as efficient organocatalyst

Fe3O4@urea/HITh-SO3H as an efficient and reusable catalyst for the solvent-free synthesis of 7-aryl-8H-benzo[h]indeno[1,2-b]quinoline-8-one and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives

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Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres

Enhanced Production of κ-Carrageenase and κ-Carrageenan Oligosaccharides through Immobilization of Thalassospira sp. Fjfst-332 with Magnetic Fe₃O₄-Chitosan Microspheres