A novel poly(ethyleneoxide)-based magnetic nanocomposite catalyst for highly efficient multicomponent synthesis of pyran derivatives
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In this article, a new magnetically recyclable nanocomposite catalyst was designed, prepared, and characterized by Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning elect...Abstract:
In the present work, a new magnetically recyclable nanocomposite catalyst was designed, prepared, and characterized by Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning elect...read more
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A green, porous and eco-friendly magnetic geopolymer adsorbent for heavy metals removal from aqueous solutions
TL;DR: In this paper, the bentonite clay was employed to synthesize a geopolymer that can remove heavy metals such as Cu(II), Pb, Ni, Cd, and Hg(II) from industrial wastewaters.
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SO3H-dendrimer functionalized magnetic nanoparticles (Fe3O4@DNH(CH2)4SO3H): Synthesis, characterization and its application as a novel and heterogeneous catalyst for the one-pot synthesis of polyfunctionalized pyrans and polyhydroquinolines
TL;DR: In this article, a novel SO3H-dendrimer functionalized magnetic nanoparticles (Fe3O4@D NH (CH2)4 SO 3H) were prepared and characterized by using FT-IR, X-ray diffraction patterns, scanning electron microscopy, transmission electron microscope, thermogravimetry analysis, and energy-dispersive Xray spectroscopy, which was successfully applied to the synthesis of highly substituted pyrans and polyhydroquinolines via a straightforward one-pot multicomponent condensation reaction.
Journal ArticleDOI
Synthesis and characterization of an acidic nanostructure based on magnetic polyvinyl alcohol as an efficient heterogeneous nanocatalyst for the synthesis of α-aminonitriles
TL;DR: In this article, a new magnetic nanocomposite based on polyvinyl alcohol (PVA) as a non-toxic, water-soluble, high mechanical stable and low-cost polymer was described.
Journal ArticleDOI
Agar: a natural and environmentally-friendly support composed of copper oxide nanoparticles for the green synthesis of 1,2,3–triazoles
TL;DR: In this article, a green and cost-effective heterogeneous nanocatalyst was synthesized by supporting copper (I) oxide nanoparticles on magnetic agar (Cu2O/Agar@Fe3O4).
Journal ArticleDOI
A Novel, Efficient, and Recoverable Basic Fe3O4@C Nano-Catalyst for Green Synthesis of 4H-Chromenes in Water via One-Pot Three Component Reactions
TL;DR: In this paper, a basic carbon coated magnetic nanoparticles (BCCMNPs-VI; Fe3O4@C@ONa) were designed and synthesized by a facile and inexpensive two-step procedure.
References
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Journal ArticleDOI
A facile one-pot green synthesis and antibacterial activity of 2-amino-4H-pyrans and 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromenes.
TL;DR: A facile one-pot expeditious synthesis of 2-amino-4H-pyrans and 2-Amino-5-oxo-5,6,7,8-tetrahydro-4h-chromenes has been described under solvent-free conditions using magnesium oxide as a catalyst in very good yields.
Journal ArticleDOI
Fe3O4 nanoparticles: a robust and magnetically recoverable catalyst for three-component coupling of aldehyde, alkyne and amine
Tieqiang Zeng,Tieqiang Zeng,Wen-Wen Chen,Ciprian M. Cirtiu,Audrey Moores,Gonghua Song,Chao-Jun Li +6 more
TL;DR: In this article, a robust, safe and magnetically recoverable Fe3O4 nanoparticle catalyzed three-component coupling of aldehyde, alkyne, and amine (A3-coupling) was developed.
Journal ArticleDOI
Fe3O4/SiO2 nanoparticles: an efficient and magnetically recoverable nanocatalyst for the one-pot multicomponent synthesis of diazepines
TL;DR: In this paper, a protocol for the one-pot multicomponent synthesis of diazepine derivatives using a 1,2-diamine, a linear or cyclic ketone, and an isocyanide in the presence of a catalytic amount of silica-supported iron oxide (Fe 3 O 4 /SiO 2 ) nanoparticles at ambient temperature in excellent yields is described.
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Green oxidation protocol: Selective conversions of alcohols and alkenes to aldehydes, ketones and epoxides by using a new multiwall carbon nanotube-based hybrid nanocatalyst via ultrasound irradiation.
TL;DR: This is the first design, preparation, characterization and application of the present nanomaterial and also the first ultrasound-irradiated green oxidation.
Journal ArticleDOI
Facile and One-Pot Access to Diverse and Densely Functionalized 2-Amino-3-cyano-4H-pyrans and Pyran-Annulated Heterocyclic Scaffolds via an Eco-Friendly Multicomponent Reaction at Room Temperature Using Urea as a Novel Organo-Catalyst
TL;DR: A simple, straightforward, and highly efficient multicomponent one-pot synthesis of a pharmaceutically interesting diverse kind of functionalized 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocycles has been developed based on a low-cost and environmentally benign commercially available urea as a novel organo-catalyst as mentioned in this paper.