Improvement of the catalytic performance of hybrid nanocomposite based on phosphate-benzimidazole in Knoevenagel condensation [PDF]
Heliyon, 2020 In this work, we have developed a simple and very effective experimental strategy for the reaction of Knoevenagel via the condensation of aromatic aldehydes substituted with active methylene compounds in the presence of hybrid nanocomposites xMCl2-yNaPO3
Zakaria Benzekri +6 more
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The green Knoevenagel condensation: solvent-free condensation of benzaldehydes [PDF]
Green Chemistry Letters and Reviews, 2017 This paper presents a novel, green Knoevenagel procedure for the chemical transformation of benzaldehydes into their corresponding α,β-unsaturated acids.
Jack van Schijndel +3 more
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CdS/CeO2/Ag2CO3 nanocomposite as an efficient heterogeneous catalyst for Knoevenagel condensation and acetylation reactions [PDF]
Scientific ReportsKnoevenagel condensation and acetylation reactions play a critical role in organic synthesis by facilitating the formation of carbon-carbon bonds and the modification of functional groups; however, limitations like low efficiency and demanding reaction ...
Getachew A. Seid +3 more
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Mechanochemical Knoevenagel condensation investigated in situ [PDF]
Beilstein Journal of Organic Chemistry, 2017 The mechanochemical Knoevenagel condensation of malononitrile with p-nitrobenzaldehyde was studied in situ using a tandem approach. X-ray diffraction and Raman spectroscopy were combined to yield time-resolved information on the milling process.
Sebastian Haferkamp +3 more
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Knoevenagel condensation of 4,5- and 1,8-diazafluorenes [PDF]
Beilstein Journal of Organic ChemistryDiazafluorenylidenes are potential antitumor agents, ligands, and functional materials. However, there are currently only limited methods for their synthesis, which are complicated and typically based on modifications of 4,5-diazafluorenone.
Darya S. Cheshkina +3 more
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Synthesis of Substituted Stilbenes via the Knoevenagel Condensation [PDF]
Molecules, 2004 Knoevenagel condensations between aldehydes and substrates containing active methylene groups were carried out in ethanol at room temperature, in the presence of potassium phosphate, to afford unsymmetrical olefins. These condensations have been shown to
Shar Saad Al-Shihry
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A Ru-Complex Tethered to a N-Rich Covalent Triazine Framework for Tandem Aerobic Oxidation-Knoevenagel Condensation Reactions [PDF]
Molecules, 2021 Herein, a highly N-rich covalent triazine framework (CTF) is applied as support for a RuIII complex. The bipyridine sites within the CTF provide excellent anchoring points for the [Ru(acac)2(CH3CN)2]PF6 complex.
Geert Watson +5 more
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Highly efficient CdS/CeO2/Ag3PO4 nanocomposite as novel heterogenous catalyst for Knoevenagel condensation and acetylation reactions [PDF]
HeliyonIn light of environmental and economic concerns, the use of heterogeneous catalysts that can function under gentler reaction conditions has recently become popular.
Fikremariam Chigru Zenebe +3 more
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A Ru-Based Complex for Sustainable One-Pot Tandem Aerobic Oxidation-Knoevenagel Condensation Reactions [PDF]
MoleculesOur novel binuclear complex-anchored Ru(III) catalyst, designed and assembled by sonicating 2,2′-(4,6-dihydroxy-1,3-phenylene)bis(1H-benzo[d]imidazole-4-carboxylic acid), Ru(DMSO)4Cl2 and 4-methylpyridine, demonstrates remarkable efficiency and ...
Wael A. A. Arafa +5 more
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Unexpected polymorphism during a catalyzed mechanochemical Knoevenagel condensation [PDF]
Beilstein Journal of Organic Chemistry, 2019 The transformation of a base-catalyzed, mechano-assisted Knoevenagel condensation of mono-fluorinated benzaldehyde derivatives (p-, m-, o-benzaldehyde) with malonodinitrile was investigated in situ and in real time.
Sebastian Haferkamp +3 more
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