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Acetone Ethyl - Crossref

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Last Updated: 19 November 2022

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Oxygen-Effect in Annealing of Recoil Damage in Cobalt Chelates-Tris-Acetyl-Acetone Co(III) and Bis-Salicylaldehyde Triethylenetetramine Co(III) Chloride

When the thermal treatment is carried out in N2 or vacuum, the magnitude of Saturation anneal is much higher. If the thermal therapy is continued at the same temperature as before, but in the absence of air, Aliquots annealed to Saturation in the presence of air can be subjected to even more annealing. The adsorbed oxygen was not found to have a negative effect on individual rate processes or a similar degree.

Source link: https://doi.org/10.1524/ract.1964.3.3.134


Process Development for Methyl Isobutyl Ketone Production Using the Low-Pressure One-Step Gas-Phase Selective Hydrogenation of Acetone

Methyl isobutyl ketone is a highly useful chemical product in the chemical industry. At 350°C and ambient pressure, a novel nano-Pd/nano-ZnCr2O4 catalyst was introduced to produce MIBK with high conversion and selectivity of 77. 3% and 71%, respectively, removing the need for high pressure in conventional MIBK processes, eliminating the need for high pressure. This is the first review of a newly developed method of methyl isobutyl ketone manufacture using acetone's low-pressure one-phase selective hydrogenation. Using the newly invented nano-catalyst, a novel process flow diagram was created for the production of MIBK in this work. When the reactor temperature is raised to 350 °C, it was discovered that the ROI could be increased by 18%.

Source link: https://doi.org/10.3390/pr10101992


O -Benzoyl side-chain conformations in 2,3,4,6-tetra- O -benzoyl-β- D -galactopyranosyl-(1→4)-1,2,6-tri- O -benzoyl-β- D -glucopyranose (ethyl acetate solvate) and 1,2,4,6-tetra- O -benzoyl-β- D -glucopyranose (acetone solvate)

O benzoylation has little effect on exo- and endocyclic bond lengths in O -benzoylation and endocyclic Cu2014O bonds, but exocyclic Cu2014O bonds in O benzoylation are longer than 0. 02 u00c5 bonds depending on the location of substitution. The conformation of the O-benzoyl side-chains is very conserved, with the carbonyl O atom either eclipsing the H atom attached to a 2u00b-alcoholic C atom or bisecting the 1u00b0-alcoholic C atom's bond angle of an 1u00b0-alcoholic C atom's H bond angle. The Cu2014O bond involving the carbonyl C atom is the most flexible of the three bonds that determine the side-chain geometry, with greater rotational variability than the remaining Cu2014O and Cu2014C bonds involving the carbonyl C atom.

Source link: https://doi.org/10.1107/s2053229619000822


N , N , N ′, N ′, N ′′-Pentamethyl- N ′′-[2-(trimethylazaniumyl)ethyl]guanidinium bis(tetraphenylborate) acetone monosolvate

Bond lengths in the central CN 3 units of both CN 3 units vary from 1. 3329 to 1. 364 u00c5, indicating a degree of double-bond behavior. In a nearly perfect trigonal atom configuration, the central C atom is linked to the three N atoms in a nearly seamless trigonalu2013planar configuration, with one positive charge delocalized in the CN 3 plane. The Cu2014N bond lengths in the terminal trimethylammonium companies have values close to that of a single bond, and the second positive charge has been localized there. The guanidinium ions in the crystal are linked by Cu2014H. . O hydrogen bonds with the acetone molecules. Between the guanidinium and acetone hydrogen atoms and the phenyl rings of the tetraphenylborate ions in cu2013H. . u03c0 interactions are present, resulting in the formation of a two-dimensional supramolecular pattern along the bc plane.

Source link: https://doi.org/10.1107/s2414314616002315


N , N , N ′, N ′-Tetramethyl- N ′′-[2-(trimethylazaniumyl)ethyl]guanidinium bis(tetraphenylborate) acetone disolvate

Bond lengths in the central C 3 N unit of the bacterium ion range from 1. 3308 to 1. 3508 u00c5, which indicate a degree of double-bond character. In a nearly optimal trigonalu2013planar configuration, the central C atom is linked to the three N atoms, and the positive charge is delocalized in the CN 3 plane. The first positive charge is localized there, and the Cu2014N bond lengths in the terminal trimethylammonium group are nearly identical to that of a single bond. The guanidinium ion is linked by NU2014H. . O and Cu2014H. . O hydrogen bonds with the acetone molecules is visible in the crystal.

Source link: https://doi.org/10.1107/s2414314616001292


Rigid backbone moiety of KNI-272, a highly selective HIV protease inhibitor: methanol, acetone and dimethylsulfoxide solvated forms of 3-[3-benzyl-2-hydroxy-9-(isoquinolin-5-yloxy)-6-methylsulfanylmethyl-5,8-dioxo-4,7-diazanonanoyl]- N - tert -butyl-1,3-thiazolidine-4-carboxamide

In both three forms, crystals of kynostatin -272, a highly selective HIV protease inhibitor that contains allophenylnorstatine [-3-hydroxy-4-phenylbutyric acid], were grown in three separate solvent systems; the local crystals of the transition state's hydroxymethylcarbonyl moiety, which mimics the transition state's moiety, were identical. Moreover, the uncomplexed forms' conformational characteristics similar to those of the protease complex of KNI-272. u2013HIV protease.

Source link: https://doi.org/10.1107/s0108768104013047


Antifungal Potential of Acetone and Ethyl Acetate Extracts of Thevetia peruviana on Development of Phytophthora colocasiae, Causal Agent of Late Blight of Taro (Colocasia esculenta (L.) Schott) from Three Agro-Ecological Zones of Cameroon

Aims: This study was conducted to investigate the antifungal properties of acetone and ethyl acetate extracts of Thevetia peruviana seeds on in vitro growth of the fungus. Methodology: acetone and ethyl acetate extracts of T. peruviana were prepared and used in concentrations of 12. 5, 25, 50, and 50 ml. The P. colocasiae was isolated from infected taro leaf cultivars""Macumba or Ibo coco" which were distributed in three regions: west, Littoral, and Centre. P. colocasiae fragments of about 0. 8 cm in diameter were cut and laid in sterile Petri dishes containing Potato Dextrose Agar medium supplemented with different amounts of plant extracts and incubated at 23°u00b0C for seven days for the analysis of the radial growth. Conclusion: The acetone and ethyl acetate extracts at a concentration of 25 u03bc/ml completely stopped in vitro radial formation of some strains of P. colocasiae.

Source link: https://doi.org/10.9734/ijpr/2022/v11i2208


Synthesis and spectroscopic and structural characterization of three new 2-methyl-4-styrylquinolines formed using Friedländer reactions between (2-aminophenyl)chalcones and acetone

Using Friedl'u00e4nder reactions between chalcones [1--3-arylprop-2-ones] and acetone, and their respective evaluations have been performed using IR, 1 H and 13 C NMR spectrometry, and crystal structure analysis. The molecules are converted into cyclic centrosymmetric dimers by C. H. N hydrogen bonds, and these dimers are linked to sheets by u03c0u2013u03c0 stacking interactions.

Source link: https://doi.org/10.1107/s2053229622008634

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions