Dicarbonyl compounds
Determination of enol form of asymmetric 1,3-dicarbonyl compounds: 2D HMBC NMR data and DFT calculations
... substituted dicarbonyl compounds 1, 2 and 7 after dihedral scan- ning in which the conformers in the lowest energy were determined (see the Sup- plementary ...aryl–aryl compounds were not subjected ...
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Enantioselective Organocatalyzed -Amination of 1,3-Dicarbonyl Compounds in Deep Eutectic Mixtures
... carbonyl compounds with during the past years ...1,3-dicarbonyl compounds, since the resulting functionalized chiral molecules can be further elaborated allowing the synthesis of chiral biologically ...
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Formation of α hydroxycarbonyl and α dicarbonyl compounds during degradation of monosaccharides
... alicyclic compounds and carboxylic acids were found indicating some subsequent reactions of primary formed ...more dicarbonyl compounds then ...
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Hydrogen Peroxide and Dicarbonyl Compounds Concentration in Honey Samples from Different Botanical Origins and Altitudes in the South of Saudi Arabia
... Different factors are known to affect the chemical constituents of the bees honey including the climate and the floral origin. The objective of this study was to investigate the effect of floral origin and altitude on ...
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An efficient three component one pot synthesis of some new tetrahydro indeno [1,2 d]pyrimidinone and dihydro1Hindeno[1,2 d]pyrimidine derivatives using Antimony (III)chloride as a catalyst and investigation of their antimicrobial activity
... boron compounds [9], TMSCl [10] and heterogeneous catalysts, such as tangstophosphoric acid [11], Zeolite [12], montmorillonite [13], ion-exchange resins [14] and grindstone technique [15] have also been ...
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KF Al2O3 as an Efficient and Recyclable Basic Catalyst for the Synthesis of 4H Pyran 3 carboxylates and 5 Acetyl 4H pyrans
... (104 mg) was added to a mixture of aldehydes (1) (2 mmol), malononitrile (2) (2 mmol) and active methylene dicarbonyl compounds (3) (2 mmol) in ethanol (6 mL). The reaction was stirred at room temperature ...
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Ultrasonic Accelerated Efficient Synthesis of (1H-tetrazole-5-yl) Pyrazines Catalyzed by MgFe2O4 Nanoparticles as a Reusable Heterogeneous Catalyst
... An efficient synthesis of (1H-tetrazole-5-yl) pyrazines is achieved by one pot multi- component coupling reaction of α-dicarbonyl compounds, 2,3-diaminomaleonitrile and sodium azide using MgFe 2 O 4 ...
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Identification of dicarbonyl and L-xylulose reductase as a therapeutic target in human chronic kidney disease
... α-dicarbonyl compounds under oxidative circumstances, among them glyoxal, methylglyoxal (MG), as well as 3-deoxy- glucosone (28, ...as dicarbonyl cell stress, can lead to cell and tissue dysfunction, ...
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Catalyst Free Synthesis of Pyridine 2,6 bis(2 bromo propane 1,3 dione) and Pyrdine 2,6 bis(N arylthiazoline 2 thiones)
... bis(β-diketone) compounds: pyridine-2,6-bis(1-methyl-propane-1,3-dione) (1a), pyridine-2,6-bis(1-ethoxycarbonyl-propane-1,3-dione) (1b) and pyridine-2,6-bis(1-phenyl-propane-1,3-dione) (1c), by Claisen ...
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One-pot synthesis of spirooxindole derivatives catalyzed by ZnFe2O4 as a magnetic nanoparticles
... 1,3-dicarbonyl compounds (1,3- cyclohexanedione and 5,5-dimethylcyclohexane-1,3-dione) and malononitrile in the optimal reaction conditions to produce the desired products in high yields and in short ...
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The Application of Arylglyoxals in the Synthesis of Pyrrolo[2,3-d]pyrimidines via Multicomponent Reactions
... 1,2-Dicarbonyl compounds are among the most attractive precursors for the design and synthesis of heterocyclic compounds. Arylglyoxals (AG) are aromatic α-keto aldehydes containing both aldehyde and ...
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Brønsted Acidic Ionic Liquid: An Efficient and Reusable Catalyst for the Multi-Component Synthesis of Dihydropyrimidinones under Solvent-Free Conditions
... 1,3- dicarbonyl compounds, Aromatic and aliphatic aldehydes, and urea or thiourea in the presence of catalytic amount of Brønsted acidic ionic liquid 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl} ...
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UV Light Induced Transformation of 1 Methylnaphthalene in the Presence of Air and Its Implications for Contaminants Research
... oxygenated compounds would not be generated from the photo-oxidation under the inert gas ...oxygenated compounds, phthalic anhydride and 1-naphthaldehyde represented by peak 1 and 7, respec- tively, were ...
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A molybdenum tris(dithiolene) complex coordinates to three bound cobalt centers in three different ways
... dentate ligand to three cobalt dicarbonyl units. Each of the three cobalt centers is relatively close to molybdenum, with Co Mo distances of 2.7224 (7), 2.8058 (7), and 2.6320 (6) A ˚ . Additionally, each of the ...
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Dicarbonyl(g5 -cyclopentadienyl)(2,3-dibromopropanamine-jN)iron(II) tetrafluoridoborate
... For the synthesis of the title compound and our previous work in this area, see: M’thiruaine et al. (2012b). For related amino complexes, see: M’thiruaine et al. (2011a,b, 2012a,b). For piano-stool bromoalkyl complex ...
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Dicarbonyl stress and dysfunction of the glyoxalase system in periodontal diseases
... Atlastin-3 Ribosome-binding protein 1 Thyroid hormone receptor-associated protein 3 Isoform 2 of Presequence protease, mitochondrial PDZ and LIM domain protein 1 Isoform 2 of 5'-nucleoti[r] ...
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Crystal structure of dicarbonyl[μ2 methylenebis(diphenylphosphane) κ2P:P′][μ2 2 (2,4,5 trimethylphenyl) 3 oxoprop 1 ene 1,3 diyl](triphenylphosphane κP)ironplatinum(Fe—Pt)–dichloromethane–toluene (1/1/2), [(OC)2Fe(μ dppm)(μ C(=O)C(2,4,5 C6H2Me3)=CH)Pt(PPh3)]
... Crystal structure of dicarbonyl[µ2-methylenebisdiphenylphosphane-κ2P:P′] [µ2-2-2,4,5-trimethylphenyl-3-oxoprop-1-ene-1,3-diyl]triphenylphosphaneκPironplatinumFe—Pt–dichloromethane–toluen[r] ...
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Effect of Fly Ash Fortification in the Manufacture Process of Making Concrete towards Characteristics of Concrete in Sulfuric Acid Solution
... C-S-H compounds formed from the reaction of cement ...C-S-H compounds that exist in the concrete, and thiscan be seen through the low value of compressive strength of concrete that corresponds to higher ...
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Synthesis and Characterization of Dibutyltin Compounds with α-Amino Acids
... the compounds II e IV, may be a sign of a certain polymerization degree [15-17, ...the compounds II and IV in relation to the solubility of the compounds I and III, described to get their respective ...
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Increased DNA dicarbonyl glycation and oxidation markers in patients with type 2 diabetes and link to diabetic nephropathy
... Herein we found, for the first time, increased plasma levels and urinary excretion of DNA glycation adducts in patients with T2DM and a link to diabetic nephropathy. Hence, mea- surement of DNA glycation adducts and ...
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