Academic literature on the topic 'Isoxazole(dimethyl-3,5)|ent'

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Journal articles on the topic "Isoxazole(dimethyl-3,5)|ent"

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Nagaraju, Sakkani, Neeli Satyanarayana, Banoth Paplal, Anuji K. Vasu, Sriram Kanvah, and Dhurke Kashinath. "Synthesis of functionalized isoxazole–oxindole hybrids via on water, catalyst free vinylogous Henry and 1,6-Michael addition reactions." RSC Advances 5, no. 100 (2015): 81768–73. http://dx.doi.org/10.1039/c5ra14039k.

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Various isoxazole–oxindole hybrids were synthesized via vinylogous Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin under catalyst free conditions in water. The products obtained were functionalized using 1,6-Michael addition reaction.
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Torroba, Tomás, Cecilia Polo, Vicente Ramos, Ricardo Bossio, Stefano Marcaccini, and Roberto Pepino. "Regioseletivity in the 3,5-Dialkylation of 3,5-Dimethyl-4-(4-methylcyclohexen-1-yl)isoxazole." HETEROCYCLES 31, no. 5 (1990): 811. http://dx.doi.org/10.3987/com-89-5129.

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Enders, Dieter, Ehsan Jafari, Dipti Kundu, et al. "Organocatalytic Enantioselective Vinylogous Henry Reaction of 3,5-Dimethyl-4-nitroisoxazole with Trifluoromethyl Ketones." Synthesis 50, no. 02 (2017): 323–29. http://dx.doi.org/10.1055/s-0036-1590928.

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The enantioselective vinylogous Henry reaction of 3,5-dimethyl-4-nitroisoxazole with trifluoromethyl ketones employing a bifunctional squaramide organocatalyst has been developed. A series of isoxazole bearing trifluoromethyl-substituted tertiary alcohols, 2-substituted (R)-1,1,1-trifluoro-3-(3-methyl-4-nitroisoxazol-5-yl)propan-2-ols, were obtained under these mild reaction conditions in good yields and moderate to good enantioselectivities
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Wang, Tao Feng, Yan Hua Yang, Shi Qiang Cui, and Gang Liu. "Synthesis and Properties of a New Photochromic Material Based on Isoxazole Unit for Optical Storage Recording." Applied Mechanics and Materials 164 (April 2012): 178–81. http://dx.doi.org/10.4028/www.scientific.net/amm.164.178.

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A novel photochromic diarylethene compound containing isoxazole unit, 1-(3,5-dimethyl-4-isoxazolyl)-2-[2-methyl-5-hydroxymethyl-3-thienyl]perfluoroyclopentene have been synthesized. Its photochromic, fluorescent and optical storage properties were investigated. The compound exhibited remarkable photochromism both in solution and in PMMA film. In addition, the open-ring isomer of the diarylethene 1a exhibited relatively clear fluorescent switches in hexane solution and PMMA film when excited at 300 nm. This new photochromic system also exhibited remarkable optical storage character
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Cai, Mei Li, Zhao Yan Tian, Shi Qiang Cui, and Shou Zhi Pu. "Synthesis and Properties of 1-(3,5-dimethyl-4-isoxazole)-2-(2-methyl-(5-ethynyl)-3-thienyl)perfluorocyclopentene." Advanced Materials Research 1078 (December 2014): 82–85. http://dx.doi.org/10.4028/www.scientific.net/amr.1078.82.

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A new photochromic diarylethene of 1-(3,5-dimethyl-4-isoxazole)-2- (2-methyl-(5-ethynyl)-3-thienyl) perfluorocyclopentene (1o) was synthesized. Its photochromic and fluorescence properties were investigated systematically. Upon irradiation with UV light with the extended response time, the diarylethene underwent a ring opening reaction to produce closed forms and color change in solution. The results showed the compound exhibited good photochromism in hexane solution. The kinetic experiments showed that the cyclization and cycloreversion processes were zeroth and first order reaction, respecti
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Li, Hui, Shou Zhi Pu, and Wei Jun Liu. "Synthesis, Properties and Application in Optical Recording of a New Diarylethene Bearing an Isoxazole Unit." Advanced Materials Research 393-395 (November 2011): 389–92. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.389.

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A new photochromic diarylethene bearing an isoxazole unit has been synthesized, namely {1-(3,5-dimethyl-4-isoxazolyl), 2-[2-methyl-5-(3-methoxyphenyl)-3-thienyl]}perfluorocyclopentene. Its properties, including photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, fluorescence and optical recording property were investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in hexane and in PMMA. The isomeric compound also functioned as a fluorescence switch by photoir
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AKGUEN, H., A. BALKAN, K. EROL та O. S. BATU. "ChemInform Abstract: New β-Diketone and 3,5-Dimethyl Isoxazole Derivatives of Theophylline as Potential Bronchodilator Agents." ChemInform 29, № 39 (2010): no. http://dx.doi.org/10.1002/chin.199839180.

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Dong, Xiao Rong, Ren Jie Wang, Gang Liu, and Shou Zhi Pu. "Synthesis and Photochromism Studies of 1-(3,5-dimethyl-4-isoxazole)-2-[2-methyl-5-naphthyl-3-thienyl] perfluorocyclopentene." Advanced Materials Research 1003 (July 2014): 15–18. http://dx.doi.org/10.4028/www.scientific.net/amr.1003.15.

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A new class of unsymmetrical photochromic diarylethene bearing an isoxazole moiety was synthesized. Its photochemical properties, including photochromic behavior and kinetics, have been investigated systematically. The result indicated that the Diarylethene1achanged the color from colorless to pink irradiation with 297 nm UV light, in which absorption maxima were observed at 522 nm in hexane. The photochromic reaction kinetics indicated that the cyclization processes of1abelong to the zeroth order reaction and the cycloreversion process belong to the first order reaction.
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Rajanarendar, E., G. Mohan, P. Ramesh, and M. Srinivas. "Phase transfer catalyzed synthesis of 3-methyl-4h-pyrazolo[3,4-d]isoxazole from 3,5-dimethyl-4-isoxazolyldiazonium tetrafluoroborate." Journal of Heterocyclic Chemistry 44, no. 1 (2007): 215–17. http://dx.doi.org/10.1002/jhet.5570440134.

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Girisha, Marisiddaiah, Hemmige S. Yathirajan, Jerry P. Jasinski, and Christopher Glidewell. "Different acid–base behaviour of a pyrazole and an isoxazole with organic acids: crystal and molecular structures of the salt 3-(4-fluorophenyl)-1H-pyrazolium 2,4,6-trinitrophenolate and of the cocrystal 4-amino-N-(3,4-dimethyl-1,2-oxazol-5-yl)benzenesulfonamide–3,5-dinitrobenzoic acid (1/1)." Acta Crystallographica Section C Structural Chemistry 72, no. 8 (2016): 612–18. http://dx.doi.org/10.1107/s2053229616010494.

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Pyrazole and isoxazole rings differ only in the notional replacement of a potential hydrogen-bond-donor NH unit in pyrazole by a potential hydrogen-bond-acceptor O atom in isoxazole. It is thus of interest to compare the hydrogen-bonding characteristics of these rings. (4-Fluorophenyl)pyrazole undergoes protonation in the presence of 2,4,6-trinitrophenol to yield the salt 3-(4-fluorophenyl)-1H-pyrazolium 2,4,6-trinitrophenolate, C9H8FN2+·C6H2N3O7−, (I), whereas there is no proton transfer between 4-amino-N-(3,4-dimethyl-1,2-oxazol-5-yl)benzenesulfonamide and 3,5-dinitrobenzoic acid, whose reac
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Dissertations / Theses on the topic "Isoxazole(dimethyl-3,5)|ent"

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Tampieri, Alberto. "Synthesis, reactivity and applications of 3,5-dimethyl-4-nitroisoxazole derivatives." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10014/.

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3,5-dimethyl-4-nitroisoxazole derivatives are useful synthetic intermediates as the isoxazole nucleus chemically behaves as an ester, but establish better-defined interactions with chiral catalysts and lability of its N-O aromatic bond can unveil other groups such as 1,3-dicarbonyl compounds or carboxylic acids. In the present work, these features are employed in a 3,5-dimethyl-4-nitroisoxazole based synthesis of the γ-amino acid pregabalin, a medication for the treatment of epilepsy and neuropatic pain, in which this moiety is fundamental for the enantioselective formation of a chiral center
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Lanson, Marc. "Isoxazoles polyalkyles : synthese, etude structurale et comportement en milieu biologique." Paris 6, 1987. http://www.theses.fr/1987PA066468.

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Lange, Catherine. "Chimie des insectes : synthèse, par réaction entre dienamines et aldéhydes insaturés, de molécules potentiellement toxiques. Analyse d'un écosystème termite-fourmi." Paris 6, 1986. http://www.theses.fr/1986PA066234.

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Synthèse de dérivés dihydroaryles ortho-substitués en particulier par un groupe aldéhyde. Obtention par l'addition de diels-alder entre dienamines acycliques conjuguées et aldéhydes insaturés. Elle s'effectue avec de très bonnes régiosélectivité et stéréospécificité. L’inhibition des acétylcholinestérases par ces dihydrobiaryles se situe au niveau du carbofurane et de la néostigmine. Étude d'un écosystème termite-fourmi. Les relations entre termites de différents genres et entre termites et fourmis font intervenir les composes présents dans la cuticule. La spectrométrie de masse a été l'outil
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