Results 21 to 30 of about 484,472 (264)
SOLVENT FREE SYNTHESIS OF CHALCONE AS ANTIBACTERIAL SUBSTANCE
Alchemy, 2017 The aims of this study was to synthesize a compound of 3-methoxy-4-hydroxychalcone through Claisen-Schmidt condensation with grinding technique (solvent-free). Vanillin, acetophenone and 60 % NaOH catalyst used in this synthesis.
Susy Yunita Prabawati +2 more
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Dynamics of solvent-free grafted nanoparticles [PDF]
The Journal of Chemical Physics, 2012 The diffusivity and structural relaxation characteristics of oligomer-grafted nanoparticles have been investigated with simulations of a previously proposed coarse-grained model at atmospheric pressure. Solvent-free, polymer-grafted nanoparticles as well as grafted nanoparticles in a melt were compared to a reference system of bare (ungrafted ...
Chremos, Alexandros +2 more
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Green preparation of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones using γ-Fe2O3@KSF as novel and recyclable magnetic catalyst [PDF]
Journal of Particle Science and Technology, 2019 The preparation of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones via a γ-Fe2O3@KSF-catalyzed multicomponent coupling reaction of 2-aminobenzimidazole, benzaldehydes, and dimedone in solvent-free conditions is reported.
Masoud Mohammadi Zeydi +1 more
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EXTRACTION OF PALM OIL’S FREE FATTY ACIDS BY TRIETHYLAMMINE (TEA) IN POLAR-NONPOLAR MIX-SOLVENT
Indonesian Journal of Chemistry, 2010 Palm oil contains unsaturated fatty acids that can be oxidated and can make rancidity of the palm oil. One of the trigliserida degradation products is free fatty acid. The usage of triethylammine (TEA) in the polar-nonpolar mix solvents could enhance the
Endang Astuti +2 more
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3-Isobutyl-5,5,7-tris(3-methylbut-2-en-1-yl)-1-phenyl-1,7-dihydro-4H-indazole-4,6(5H)-dione
Molbank, 2022 Here we describe the functionalization of lupulone natural compound in obtaining 3-isobutyl-5,5,7-tris(3-methylbut-2-en-1-yl)-1-phenyl-1,7-dihydro-4H-indazole-4,6(5H)-dione.
José Edmilson Ribeiro do Nascimento +3 more
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A Stoichiometric Solvent-Free Protocol for Acetylation Reactions
Frontiers in Chemistry, 2022 Considering the remarkable relevance of acetylated derivatives of phenols, alcohols, and aryl and alkyl thiols in different areas of biology, as well as in synthetic organic chemistry, a sustainable solvent-free approach to perform acetylation reactions is proposed here.
Francesca Valentini +6 more
openaire +5 more sources
Beilstein Journal of Organic Chemistry, 2012 An environmentally benign, fast and convenient protocol has been developed for the Michael addition of 1,3-dicarbonyl compounds to β-nitroalkenes in good to excellent yields by a grinding method under catalyst- and solvent-free conditions.
Zong-Bo Xie +5 more
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Optimization of Enzymatic Synthesis of Oleoyl-Diethanolamide in Solvent-Free System
Journal of Pure and Applied Microbiology, 2017 Oleoyl-diethanolamide was synthesized through amidification of diethanolamine (DEA) with oleic acid (OA) using immobile lipase as a biocatalyst. Response Surface Methodology (RSM) based on five-level five variable, Central Composite Rotatable Design ...
Zuhrina Masyithah, Tjahjono Herawan
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Solvent Free Synthesis of Chalcones and their Antibacterial Activities
E-Journal of Chemistry, 2005 The solvent free synthesis of six chalcones was carried out by grinding the piperanal and the acetophenone (unsubstituted, 4-methyl, 4-methoxy, 4-bromo, 4-nitro, 3-chloro) in the presence of solid sodium hydroxide with a mortar and pestle.
K. Rajendra K. Saini +3 more
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Nanomaterials, 2022 The rapid development of electric vehicles has generated a recent demand for high energy density lithium-ion batteries (LIBs). One simple, effective way to enhance energy density of LIBs is to increase the thickness of electrodes.
Han-Min Kim +4 more
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