Graphene oxide: a promising carbocatalyst for the regioselective thiocyanation of aromatic amines, phenols, anisols and enolizable ketones by hydrogen peroxide/KSCN in water

Khalili, Dariush

doi:10.1039/c5nj02314a

Cited by 150 publications

(65 citation statements)

References 55 publications

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“…Despite this potential activity, magnetic GO still remain largely unexplored in catalytic reactions. As a continuing interest in expanding the catalytic application of GO in organic transformations, we report herein a heterogeneous catalytic system for the arylation/alkylation of benzothiazoles with aldehydes and benzylic alcohols using GO‐Fe 3 O 4 nanocomposites as a catalyst and diisopropyl azodicarboxylate (DIAD) as an available and useful oxidant.…”

Section: Introductionmentioning

confidence: 99%

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

Khalili

Etemadi‐Davan

Banazadeh

2017

Applied Organom Chemis

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In this report, we introduced Graphene oxide‐iron oxide (GO‐Fe3O4) nanocomposites as a heterogeneous catalyst for arylation/alkylation of benzothiazoles with aldehydes and benzylic alcohols in the presence of diisopropyl azodicarboxylate (DIAD) as an oxidant which exclusively produced 2‐aryl (alkyl)‐1H–benzothizoles in moderate to excellent yields. The absence of precious metals and toxic solvent, easy product isolation, and recyclability of the GO‐Fe3O4 with no loss of activity are notable advantages of this method.

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Section: Introductionmentioning

confidence: 99%

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

Khalili

Etemadi‐Davan

Banazadeh

2017

Applied Organom Chemis

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“…In our quest to develop aqueous medium organic synthesis of triazoles, we employed CuFe 2 O 4 /g‐C 3 N 4 hybrids as a catalyst in the click reaction of phenylacetylene 1a (1.1 mmol), benzyl bromide 2a (1.2 mmol), and sodium azide (1.2 mmol) in H 2 O without using any reducing agent (Table ).…”

Section: Resultsmentioning

confidence: 99%

Impregnated copper ferrite on mesoporous graphitic carbon nitride: An efficient and reusable catalyst for promoting ligand‐free click synthesis of diverse 1,2,3‐triazoles and tetrazoles

Khalili

Rezaee

2019

Applied Organom Chemis

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Magnetic CuFe 2 O 4 /g-C 3 N 4 hybrids were synthesized through a facile method and their catalytic performances were evaluated in click chemistry for the first time. The structural and morphological characterization of prepared materials was carried out by different techniques such as X-ray diffraction, highresolution transmission electron microscopy, field emission scanning electron microscopy, Fourier infrared spectroscopy, vibrating sample magnetometry, thermogravimetric analysis, and N 2 adsorption-desorption analysis (Brunauer-Emmett-Teller surface area). The utilization of magnetic CuFe 2 O 4 /g-C 3 N 4 enabled superior performance in the one-pot azide-alkyne cycloaddition reaction in water using alkyl halides and epoxides as azide precursors without the need of any additional agents. The present system is broad in scope and especially practical for the synthesis of macrocyclic triazoles and also tetrazoles. In addition, the catalytic system highly fulfills the demands of "green click chemistry" with its convenient conditions, especially easy access to a variety of significant products in low catalyst loading and simple workup and isolation procedure.

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“…Peaks at 756 cm -1 relate to the C-C chain of PVP. The presence of PHA can be confirmed by CH, CH2, CH3 groups which were present in the 2959 cm -1 region [20][21][22][23].…”

Section: Ftir Analysis Of Nanocompositesmentioning

confidence: 99%

Fabrication of Composite-Based Electrospun Nanofiber Adsorbent and Application in Dye Removal

Selvakumar

Kumar

2020

J. Environ. Sci. Pollut. Res.

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The improvement of processes for maintaining our ecosystem amidst rapidly developing and sustaining pollution is the ever-growing demand. This current research work is aimed at developing useful nanomaterials, such as silica nanoparticles and graphene oxide nanoparticles from solid agro-waste, coconut husk. The nanoparticles obtained were then blended with two other polymers, namely polyhydroxyalkanotes, a microbial biopolymer and polyvinylpyrrolidone, a synthetic biodegradable polymer to form nanocomposites, which are used as the base for nanofiber fabrication through electrospinning. The nanocomposites were characterized through Fourier-transform infrared (FTIR) spectrometer and the nanofibers under scanning electron microscope. The nanofibers were subjected to analyze the ability to function as adsorbents. The composite nanofibers developed were able to remove 62% of methylene blue dye in the test solution in a span of 12 hours with additional benefits of easy removal of used adsorbents and adsorbates.

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Graphene oxide: a promising carbocatalyst for the regioselective thiocyanation of aromatic amines, phenols, anisols and enolizable ketones by hydrogen peroxide/KSCN in water

Abstract: Graphene oxide as a heterogeneous carbocatalyst catalyzes the direct thiocyanation of a variety of arenes and enolizable carbonyl compounds.

Cited by 150 publications

References 55 publications

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

Impregnated copper ferrite on mesoporous graphitic carbon nitride: An efficient and reusable catalyst for promoting ligand‐free click synthesis of diverse 1,2,3‐triazoles and tetrazoles

Fabrication of Composite-Based Electrospun Nanofiber Adsorbent and Application in Dye Removal

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Graphene oxide: a promising carbocatalyst for the regioselective thiocyanation of aromatic amines, phenols, anisols and enolizable ketones by hydrogen peroxide/KSCN in water

Abstract: Graphene oxide as a heterogeneous carbocatalyst catalyzes the direct thiocyanation of a variety of arenes and enolizable carbonyl compounds.

Cited by 150 publications

References 55 publications

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe3O4 hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe3O4 hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

Impregnated copper ferrite on mesoporous graphitic carbon nitride: An efficient and reusable catalyst for promoting ligand‐free click synthesis of diverse 1,2,3‐triazoles and tetrazoles

Fabrication of Composite-Based Electrospun Nanofiber Adsorbent and Application in Dye Removal

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2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant

2‐Arylation/alkylation of benzothiazoles using superparamagneticgraphene oxide‐Fe₃O₄ hybrid material as a heterogeneous catalystwith diisopropyl azodicarboxylate (DIAD) as an oxidant