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Добірка наукової літератури з теми "Acetone-ethanol medium"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Acetone-ethanol medium"

1

D.T.Tayade*, and R.D.Isankar. "GREEN SYNTHESIS OF N'-SUBSTITUTED-N"-[4-HYDROXY-3- (1H-INDOL-2-YL) PHENYLDICARBONODITHIOIMIDEDIAMIDE." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 04 (2018): 2281–83. https://doi.org/10.5281/zenodo.1217987.

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Анотація:

In this work we synthesized a novel series of N’-substituted-N”-[4-hydroxy-3-(1H-indol-2-yl) phenyldicarbonodithioimidediamide by green synthesis parameters from N’-[4-hydroxy-3-(1H-indol-2-yl) phenyl] thiourea and substituted thioformamide. Previously such types of reactions were carried out in acetone medium but we developed new reaction condition in which percentage of acetone was reduced. During synthesis we carried out these reactions in various compositions of ethanol-acetone medium. This method has broad applications due to its efficiency for accelerating a course of o

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2

D.T.Tayade*, R. D. Thombare S.A. Waghmare. "SYNTHESIS OF 5-{(4-AMINO-N-[2-(DIETHYLAMINO)ETHYL]- o-ANISAMIDO-5-YL}-AMINO-3-SUBSTITUTEDIMINO-7- SUBSTITUTEDIMINO-1,2,4,6-TRITHIAZEPINES." Indo American Journal of Pharmaceutical Sciences 04, no. 11 (2017): 4492–96. https://doi.org/10.5281/zenodo.1067612.

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Анотація:

A novel series of 5-{(4-amino-N-[2-(diethylamino)ethyl]-o-anisamido-5-yl}-amino-3-substitutedimino-7- substitutedimino-1,2,4,6-trithiazepines was synthesized by the interactions of 4-amino-5-substituteddithiobiureto-N- [2-(diethylamino)ethyl]-o-anisamides with phenylisothio carbamoyldichloride in acetone-ethanol medium. The structures of all the synthesized compounds were justified on the basis of chemical characteristics, elemental analysis and spectral studies. Keywords: 5-{(4-Amino-N-[2-(diethylamino)ethyl]-o-anisamido-5-yl}-amino-3-phenylimino-7-ethylimino-1,2,4,6- trithiazepine, 4-amino-5

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3

Snigur, D. V., A. N. Chebotarev, T. M. Shcherbakova, E. M. Rakhlytskaya, and V. V. Shapovalenko. "IONIZATION OF ETHANOLAMINES IN WATER- ORGANIC MEDIA." Odesa National University Herald. Chemistry 28, no. 1(84) (2023): 53–57. http://dx.doi.org/10.18524/2304-0947.2023.1(84).277061.

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In this paper, the ionization constants (pKa) of some nitrogen-containing organic bases (monoethanolamine, diethanolamine and triethanolamine) in water-ethanol, water-acetone and water-acetonitrile solutions at various concentrations of organic solvent in the studied systems have been determined by the potentiometric titration method. It was found that the values of pKa of monoethanolamine, diethanolamine and triethanolamine in aqueous-organic solutions naturally decreases with increasing concentration of organic solvent in the system. It was shown that their nature and the physico-chemical pr

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4

D.T.Tayade*, R. D. Thombare S.A. Waghmare. "SYNTHESIS OF 5-{(4-AMINO-N-[2-(DIETHYLAMINO)ETHYL]-o-ANISAMIDO-5-YL}-AMINO-3-SUBSTITUTEDIMINO-7-SUBSTITUTEDIMINO-1,2,4,6-TRITHIAZEPINES." Indo American Journal of Pharmaceutical Sciences 04, no. 11 (2017): 4492–96. https://doi.org/10.5281/zenodo.1067338.

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Анотація:

<em>A novel series of 5-{(4-amino-N-[2-(diethylamino)ethyl]-o-anisamido-5-yl}-amino-3-substitutedimino-7-substitutedimino-1,2,4,6-trithiazepines was synthesized by the interactions of 4-amino-5-substituteddithiobiureto-N-[2-(diethylamino)ethyl]-o-anisamides with phenylisothio carbamoyldichloride in acetone-ethanol medium.  The structures of all the synthesized compounds were justified on the basis of chemical characteristics, elemental analysis and spectral studies.</em> <strong>Keywords: </strong><em>5-{(4-Amino-N-[2-(diethylamino)ethyl]-o-anisamido-5-yl}-amino-3-phenylimino-7-ethylimino

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5

Tekiela, Agata, Łukasz Furmanek, Magdalena Andrusiewicz, et al. "Can lichen secondary compounds impact upon the pathogenic soil fungi Fusarium oxysporum and F. avenaceum?" Folia Cryptogamica Estonica 58 (September 27, 2021): 165–81. http://dx.doi.org/10.12697/fce.2021.58.18.

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The antifungal activity of secondary lichen metabolites extracted by means of acetone and ethanol from Cetraria islandica, Cladonia mitis, C. rangiferina, Pseudevernia furfuracea and Usnea dasopoga on the pathogenic fungi Fusarium oxysporum and F. avenacuem was examined. The activity of extracted compounds was tested after their mixture with PDA medium before solidification. The most active extracts inhibiting the growth of fungal mycelia contained fumarprotocetraric, salazinic and usnic acids, and atranorin. Unparalleled activity was demonstrated by an ethanol extract from mixed C. islandica

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6

P., V. Raut* P. S. Bodakhe S. A. Waghmare D. T. Tayade. "SYNTHESIS OF 2-SUBSTITUTEDGUANIDINO-4-SUBSTITUTED-IMINE-6-SUBSTITUTEDIMINO-1,3,5-THIADIAZINES." Indo American Journal of Pharmaceutical Sciences 04, no. 11 (2017): 4644–50. https://doi.org/10.5281/zenodo.1069718.

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Анотація:

A novel series of 2-substitutedguanidino-4-substitutedimine-6-sub-stitutedimino-1,3,5- thiadiazines (IIIa1 -e 5 ) have been recently synthesized by refluxing N-methylformamidino-N’- phenyliminothiocarbamide also called as 1-(N-substitutedcarbamimidoyl)3-{N-(E)- substitutedmethylidinecar-bamimidoyl}thiourea (Ia-e) with various isocyanodichloride (II1-5) in acetone-ethanol medium in 1:1 molar proportion. The structure of all the synthesized compounds was justified on the basis of chemical characteristics, elemental analysis and IR, NMR and mass spectral analysis. Keywords: Guanidine, 1,3,5

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7

Chan Kim, Sung, Ki Yong Lee, and Anthony Hamins. "Energy balance in medium-scale methanol, ethanol, and acetone pool fires." Fire Safety Journal 107 (July 2019): 44–53. http://dx.doi.org/10.1016/j.firesaf.2019.01.004.

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8

Wahidiyah, Dwi Retno Nurotul, Bambang Setiaji, and Iqmal Tahir. "UTILIZATION OF ACTIVATED ZEOLITE AS MOLECULAR SIEVE IN CHROMATOGRAPHIC COLUMN FOR SEPARATION OF COAL TAR COMPOUNDS." Indonesian Journal of Chemistry 4, no. 2 (2010): 132–38. http://dx.doi.org/10.22146/ijc.21866.

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Application of activated zeolite (ZAA) as molecular sieve to separate compounds of coal tar from vaccum fractional distillation, have been done. The size of zeolite was 10-20 mesh and used as solid phase in column chromatography with length of 30 cm. The first step of the research was coal pyrolisis and the product (tar) was distillated by fractional column and vaccum system at reduced pressure 44 cmHg and maximum temperature at 200 oC. The distillate from this procedure was flowed to the column chromatography of zeolite (ZAA). The compound absorbed by zeolite was eluted with varying solvents,

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9

Kazemi, Nazli, Nastaran Gholizadeh, and Petr Musilek. "Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning." Sensors 22, no. 14 (2022): 5362. http://dx.doi.org/10.3390/s22145362.

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Анотація:

Microwave sensors are principally sensitive to effective permittivity, and hence not selective to a specific material under test (MUT). In this work, a highly compact microwave planar sensor based on zeroth-order resonance is designed to operate at three distant frequencies of 3.5, 4.3, and 5 GHz, with the size of only λg−min/8 per resonator. This resonator is deployed to characterize liquid mixtures with one desired MUT (here water) combined with an interfering material (e.g., methanol, ethanol, or acetone) with various concentrations (0%:10%:100%). To achieve a sensor with selectivity to wat

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10

Makhmur, Ahmad, and Prasad Panda Bibhu. "Biopigments Produced by Monascus purpureus Through Solid State Fermentation: HPTLC Finger Printing Analysis." SVOA Microbiology 4, no. 1 (2023): 01–12. https://doi.org/10.58624/SVOAMB.2023.04.024.

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Анотація:

The current study aims to conduct HPTLC finger printing analysis of various extracts of Monascus purpureus biopigments (water extract, acetone extract, chloroform extract, acetonitrile extract, petroleum ether extract, methanol extract, ethanol extract, hexane extract). Natural and synthetic pigments both play an important roles as biocolourants in the food and pharmaceutical industries. The most recent HPTLC technique helps useful fingerprint analysis to determine the identity and composition of natural phytomolecules. Solid state fermentation was carried out with the help of a production med

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