Articles with "knoevenagel condensation" as a keyword



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Synthesis and characterization of sulfamic acid supported on Fe3O4 nanoparticles: A green, versatile and magnetically separable acidic catalyst for oxidation reactions and Knoevenagel condensation

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Published in 2018 at "Applied Organometallic Chemistry"

DOI: 10.1002/aoc.3927

Abstract: Sulfamic acid immobilized on diethylenetriamine functionalized Fe3O4 nanoparticles (SA-DETA-Fe3O4) was successfully prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), thermo gravimetric analysis (TGA), X-Ray diffraction (XRD) and… read more here.

Keywords: catalyst; knoevenagel condensation; magnetically separable; sulfamic acid ... See more keywords
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Contribution of Knoevenagel Condensation Products toward the Development of Anticancer Agents: An Updated Review

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Published in 2022 at "ChemMedChem"

DOI: 10.1002/cmdc.202100736

Abstract: Knoevenagel condensation is an entrenched, prevailing, prominent arsenal following greener principles in the generation of α, β‐unsaturated ketones/carboxylic acids by involving carbonyl functionalities and active methylenes. This reaction has proved to be a major driving… read more here.

Keywords: knoevenagel condensation; condensation; review; toward development ... See more keywords
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Continuous-Flow Microreactor for Knoevenagel Condensation of Ethyl Cyanoacetate with Benzaldehyde: Effect of Grafted Amino Groups on Catalytic Activity.

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Published in 2023 at "ChemPlusChem"

DOI: 10.1002/cplu.202200390

Abstract: Ethyl α-cyanocinnamate was synthesized in the Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate in flow monolithic microreactor of 0.63 cm3 volume. The catalytically active core was made of silica monolith modified with various amine group… read more here.

Keywords: knoevenagel condensation; ethyl cyanoacetate; catalytic activity; activity ... See more keywords
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Zn@ZIF-67 as Catalysts for the Knoevenagel Condensation of Aldehyde Derivatives with Malononitrile

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Published in 2017 at "Catalysis Letters"

DOI: 10.1007/s10562-017-2153-y

Abstract: Three different bimetallic zinc-cobalt zeolitic imidazolate frameworks (ZIFs) were successfully synthesized at room temperature in water through a green and simple procedure and tested as catalysts for the Knoevenagel condensation reaction between p-Br-benzaldehyde and malononitrile… read more here.

Keywords: catalysts knoevenagel; knoevenagel condensation; zif catalysts; condensation aldehyde ... See more keywords
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A simple strategy to prepare graphene oxide modified by ammonia gas catalysts for Knoevenagel condensation

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Published in 2017 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-017-3182-2

Abstract: A facile and simple strategy to prepare ammonia gas-modified graphene oxide (GO) catalysts was successfully established by gas–solid acid–base reaction at room temperature. The catalytic performances of ammonia gas-modified GO samples were examined in Knoevenagel… read more here.

Keywords: knoevenagel condensation; gas; simple strategy; spectroscopy ... See more keywords
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Cs-Beta with an Al-rich composition as a highly active base catalyst for Knoevenagel condensation

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Published in 2019 at "Applied Catalysis A: General"

DOI: 10.1016/j.apcata.2019.02.014

Abstract: Abstract Ion-exchange of an Al-rich zeolite beta, synthesized by organic structure-directing agent-free method (Beta-OF), was studied for application as a base catalyst. While the as-synthesized Beta-OF in Na-form itself had base sites and showed moderate… read more here.

Keywords: beta; base catalyst; knoevenagel condensation; base ... See more keywords
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Carbon doped hexagonal BN as a highly efficient metal-free base catalyst for Knoevenagel condensation reaction

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Published in 2018 at "Applied Catalysis B: Environmental"

DOI: 10.1016/j.apcatb.2018.08.021

Abstract: Abstract Development of new heterogeneous base catalysts for Knoevenagel condensation reactions is critical for practical applications. Herein, we demonstrate that carbon doped hexagonal boron nitride (BCN) exhibits a high catalytic activity for Knoevenagel condensation of… read more here.

Keywords: doped hexagonal; carbon doped; knoevenagel condensation; condensation reaction ... See more keywords
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Two Co(II)-based metal-organic frameworks: Catalytic Knoevenagel condensation reactions and inhibitory activity on the scar tissue hyperplasia by reducing the activity of the VEGF signaling pathway

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Published in 2020 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2020.08.023

Abstract: Abstract In the current research, two porous Co(II)-containing metal-organic frameworks (MOFs) whose chemical formulae can be teamed as [Co2(bptc)(H2O)2]·5DMA (1, H4bptc = biphenyl-3,3′,5,5′-tetracarboxylic acid) and [Co2(Hatta)2·(H2O)3]·3DMA (2, H4atta = 2′-amino-[1,1′:4′,1″-terphenyl]-3,3″,5,5″- tetracarboxylic acid) have been solvothermally… read more here.

Keywords: knoevenagel condensation; scar tissue; metal organic; organic frameworks ... See more keywords

Green and selective toluene oxidation–Knoevenagel-condensation domino reaction over Ce- and Bi-based CeBi mixed oxide mixtures

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Published in 2020 at "Journal of Catalysis"

DOI: 10.1016/j.jcat.2019.11.011

Abstract: Abstract Both Bi- and Ce-based CeBi mixed oxides were prepared by a modified sol-gel process from their precursor salts. The mixed as well as the parent oxides were characterized by X-ray diffractometry, Raman, XPS, UV–DRS… read more here.

Keywords: toluene oxidation; oxidation; knoevenagel condensation; condensation ... See more keywords
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Polyoxoniobates as a superior Lewis base efficiently catalyzed Knoevenagel condensation

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Published in 2018 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2018.05.002

Abstract: Abstract The outstanding basicity of negative charged Lindqvist type Polyoxoniobate K7HNb6O19·13H2O (Nb6) have been proved experimentally as well as by theoretical NBO calculations, the results insights high electron density on terminal and bridging oxygen atoms… read more here.

Keywords: superior lewis; knoevenagel condensation; polyoxoniobates superior; condensation ... See more keywords
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Structure-induced Lewis-base Ga4B2O9 and its superior performance in Knoevenagel condensation reaction

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Published in 2020 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2020.110914

Abstract: Abstract Solid Lewis-base catalysis is important in the production of fine chemicals. A Lewis-base Ga4B2O9 was synthesized by high temperature solid state reactions. It exhibited a high yield (90 %) and a high stability in… read more here.

Keywords: knoevenagel condensation; lewis base; base; structure ... See more keywords