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Showing 1 to 20 of 36 for “"Cyclohexanone"”.
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Structure and decomposition of diol inclusion compounds
… with various guest molecules, namely cyclohexanone, 2- methylcyclohexanone, 3-methylcyclohexanone and 4-methylcyclohexanone, were investigated. The host to guest ratios were determined by programmed temperature thermogravimetry. Two of the four molecular structures were elucidated …
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The study of aldol condensation of ketones using zoelites as catalysts
… for aldol condensation reactions of acetone and cyclohexanone and the results compared with those using H₂SO₄. Cross-aldol condensation reactions of acetone and benzaldehyde were also performed.
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Exploitation of synergy in oxidation catalysis with bimetallic aluminophosphate catalysts
… catalysts were tested for the ammoximation of cyclohexanone using benign reagents to produce cyclohexanone oxime, a vital precursor in the production of nylon-6. Currently produced through hazardous processes, the ammoximation of cyclohexanone with metal substituted catalysts provides a more …
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THE RESPIRATORY RESPONSE OF TRPV1 KNOCKOUT MICE TO TRIGEMINAL IRRITANTS
… show respiratory rate depression when exposed to cyclohexanone, a known TRPV1 agonist. Amyl acetate, eugenol and nicotine caused a significant respiratory rate depression in wild type and Trpv1 -/- mice. It appears that cyclohexanone is primarily detected via TRPV1, while the detection of amyl …
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Air stripping and biological treatment of ammonium sulfate wastewater from the caprolactam manufacturing process
… this waste stream focused on two oximes: namely cyclohexanone oxime and methylethyl ketoxime (MEKO), which were both found in the wastewater in concentrations of 50-150 mg/L. The conclusion of this work is that cyclohexanone oxime is not inhibitory to nitrification .in concentrations less than …
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Studies of Some Catalytic Properties of Zeolites
… The rearrangements of cyclopentanone oxime and cyclohexanone oxime were studied spectroscopically, and the conversion of cyclopentanone oxime studied further using a flow system. The active sites for the Beckmann rearrangement have been identified as surface hydroxyl groups located at specific …
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Investigation of Absolute Photoionization Cross Sections of Cyclic Ketones, Low Temperature Combustion of Propargylamine by Synchrotron Photoionization Mass Spectrometry, and Computational Study of Hypersalts
… cross sections of both cyclopentanone and cyclohexanone, as well as the Cl-initiated oxidation of propargylamine were completed through the use of a multiplexed photoionization mass spectrometer (MPMIS) located at the Lawrence Berkeley National Laboratory Advanced Light Source (ALS). …
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Reactivity of a Low Valent Gallium Compound
… C-activation of pyridine N-oxide, pyridine, cyclohexanone, DMSO, and Et3P=O by a transient NacNacGa=O resulting in the corresponding gallium hydroxides is demonstrated. DFT calculations suggested initial formation of adducts between substrates and NacNacGa=O followed by a C-H bond abstraction …
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Acyloxy Nitroso Compounds as HNO Donors and Their Reactions with Thiol and Heme Containing Proteins
… the ester portion of the molecule. A number of cyclohexanone acyloxy nitroso compounds that contain different R groups on the ester that include a t-butyl group to increase stability, long side chains and double bonds to increase lipophilicity, and oxygen in the ring to increase solubility , …
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Catalytic implications of confined solvent ensembles within Lewis acid zeolites
… catalyze transfer hydrogenation reactions of cyclohexanone in a 2-butanol solvent 10x faster than their hydrophilic analogues. This rate enhancement stems from the ability of hydrophobic Sn-Beta to inhibit the formation of extended liquid-like 2-butanol oligomers and promote dimeric H-bonded …
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Prozessentwicklung mit maßgeschneiderten rekombinanten Biokatalysatoren zur Synthese einer Bulk- und einer Feinchemikalie
… by means of an alcohol dehydrogenase and a cyclohexanone monooxygenase towards ε-caprolactone without isolation of the intermediate cyclohexanone, inhibition of the monooxygenase especially by the product was addressed by solvent engineering. However, increase of productivity was limited …
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Identifying Potential Agonists Of TRPA1 Using A Heterologous Expression System And Transgenic Mice
… It remains unclear whether acetic acid, cyclohexanone and denatonium benzoate are TRPA1 agonists. Further study is necessary to determine the precise interactions of these compounds and TRPA1.
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The Relationship of Herpetofaunal Community Composition to an Elephant (Loxodonta Africana) Modified Savanna Woodland of Northern Tanzania, and Bioassays with African Elephants
… were conducted on three chemical compounds (cyclohexanone, 2<decanone and 2<nonanone) that could possibly be elephant pheromones. The compounds were tested from August 2007 - April 2008. The compounds were not significantly bioactive, but did yield some interesting results.
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Acqua: solvente elettivo in Organocatalisi e Biocatalisi
… reaction between 3-pyridincarbaldehyde and the cyclohexanone, catalyzed by morpholine and 4-tertbutyldimethylsiloxyproline, using water as sole solvent. This interest has resulted in countless works appeared in the literature concerning the use of proline derivatives as effective catalysts in …
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[3+2]-Cycloadditions of Azomethine Imines and Ynolates and Progress Towards a Radical Three-Component Cross-Coupling Reaction
… [2+2]-annulation/fragmentation to construct cyclohexanones. Among all the methods to synthesize highly substituted cyclohexanols/cyclohexanones, there is no general, one-step enantioselective, intermolecular method to synthesize a highly substituted cyclohexanol/cyclohexanone with a …
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Design, synthesis and evaluation of organocatalysts in 1,4-conjugate additions to nitroolefins and alkylidene malonates
… were also employed in the Michael addition of cyclohexanone to nitrostyrene, furnishing up to 97% yield and 48% ee . The organocatalysed conjugate addition reactions involving less activated Michael acceptors, such as ,-unsaturated diesters, ketones and acrylate esters was also investigated. …
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Functionalization and fabrication of single-walled carbon nanotube-based chemiresistors for sensory applications
… with cofacial n-n interactions, it binds to cyclohexanone (a target analyte for explosive detection) via hydrogen bond, and it improves the overall robustness of SWCNT-based chemiresistors (e.g., humidity and heat). In our other studies, we fabricated sensors by drawing. Abrasion is a safe, …
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Observation and Nature of Non-statistical Dynamic Effects in Ordinary Organic Reactions
… KIEs were measured for the oxidation of cyclohexanone with peracetic acid and trifluoroperacetic acid. When using peracetic acid as the oxidant, the alkyl migration was determined to be the rate-determining step based on significant intermolecular KIEs on the carbonyl and alpha-methylene …
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