Relevant bibliographies by topics / Composite pyrazole

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  2. Dissertations / Theses

Academic literature on the topic 'Composite pyrazole'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Composite pyrazole"

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Huang, Yu-Ren, Chung-Te Chang Chien, and Cheng-Lung Chen. "A Molecular Dynamics Simulation Based Investigation of the Proton Conductivity of Anhydrous Pyrazole Doped Poly(Vinylphosphonic Acid) Composite System." Polymers 12, no. 12 (2020): 2906. http://dx.doi.org/10.3390/polym12122906.

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With the recognition of the multiple advantages of proton transport membranes that can operate under anhydrous conditions and offer promising opportunities as fuel cells working at high temperatures, a number of such membranes have been developed, but the proton transport mechanism of these materials has not been fully understood. In this work, a theoretical investigation based on molecular dynamics simulations is carried out on a system that is very similar to a real anhydrous proton transport membrane. The location and type of hydrogen bonds have been precisely identified by intermolecular p
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Yuan, Huijun, Yao Li, Hanhui Zhao, Zhihong Yang, Xin Li, and Wenjun Li. "Asymmetric synthesis of atropisomeric pyrazole via an enantioselective reaction of azonaphthalene with pyrazolone." Chemical Communications 55, no. 84 (2019): 12715–18. http://dx.doi.org/10.1039/c9cc06360a.

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The first catalytic asymmetric reaction of azonaphthalene with pyrazolone has been established. A wide range of axially chiral pyrazole derivatives have been achieved in good yields (68–99%) with excellent enantioselectivities (83–98% ee) by utilizing chiral phosphoric acid as a catalyst.
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Li, Ling, Zhen-Ting Liu, and Xiang-Ping Hu. "Copper-catalyzed propargylic [3+3] cycloaddition with 1H-pyrazol-5(4H)-ones: enantioselective access to optically active dihydropyrano[2,3-c]pyrazoles." Chemical Communications 54, no. 85 (2018): 12033–36. http://dx.doi.org/10.1039/c8cc05706k.

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A copper-catalyzed propargylic [3+3] cycloaddition with 1H-pyrazol-5(4H)-ones as C,O-bisnucleophiles through the desilylation-activated strategy has been developed. With the support of a chiral tridentate P,N,N-ligand, the reaction gave rise to a variety of optically active dihydropyrano[2,3-c]pyrazoles cyclohexadienone derivatives with up to 96% ee.
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Lintang, Hendrik O., Nur Azmina Roslan, Noratika Ramlan, Mustaffa Shamsuddin, and Leny Yuliati. "Photocatalyst Composites of Luminescent Trinuclear Copper(I) Pyrazolate Complexes/Titanium Oxide for Degradation of 2,4-Dichlorophenoxyacetic Acid." Materials Science Forum 846 (March 2016): 697–701. http://dx.doi.org/10.4028/www.scientific.net/msf.846.697.

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Here phosphorescent trinuclear copper (I) pyrazolate complexes ([Cu3Pz3]), synthesized from 3,5-dimethyl and 4-(3,5-dimethoxybenzyl)-3,5-dimethyl pyrazole ligands for complexes [Cu3Pz3]1 and [Cu3Pz3]2, were successfully impregnated into TiO2 with concentration of 0.1 mol%. These luminescent photocatalyst composites ([Cu3Pz3]1or 2/TiO2) gave 60% and 49% of dichlorophenoxyacetic acid (2,4-D) degradation after 1 h for [Cu3Pz3]1/TiO2 and [Cu3Pz3]2/TiO2, while TiO2 only showed 48%. The higher activity observed on [Cu3Pz3]1/TiO2 than the TiO2 would come from the efficient reduction of electron-hole
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Sabran, Nurul Husna, Leny Yuliati, Siew Ling Lee, and Hendrik Oktendy Lintang. "Systematic Study of Calcination Temperature on Photocatalytic Activity of Luminescent Copper(I) Pyrazolate Complex/Titanium Oxide Composites." Journal of the Indonesian Chemical Society 2, no. 1 (2019): 54. http://dx.doi.org/10.34311/jics.2019.02.1.54.

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Columnar assembly of luminescent 3,5-dimethyl pyrazolate complexes/titanium oxide composites with different metal ions has shown significant improvement in its photocatalytic activity for the removal and degradation of 2, 4-dichlorophenoxyacetic acid (2,4-D). Since photocatalytic activity of semiconductor titanium oxide (TiO2) with an anatase phase can be improved by calcination temperature, we report the effect of heat treatments on the preparation of copper(I) 3,5-dimethyl pyrazolate complex/titanium oxide composite ([Cu3Pz3]/TiO2) for the removal and degradation of 2,4-D. Photocatalyst comp
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Taidakov, I. V., A. N. Lobanov, S. A. Ambrozevich, and A. G. Vitukhnovskii. "Study of photophysical properties of composite materials based on polystyrene, polymethyl methacrylate, and Eu(III) complex with 1-(1,5-dimethyl-1h-pyrazole-4-yl)-4,4,4-trifluorobutane-1,3-dion and 1,10-phenanthroline." Bulletin of the Lebedev Physics Institute 39, no. 11 (2012): 320–24. http://dx.doi.org/10.3103/s1068335612110036.

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Kumari, Shweta, Amiya Shekhar, and Devendra D. Pathak. "Correction: Graphene oxide–TiO2 composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines." New Journal of Chemistry 43, no. 42 (2019): 16767–68. http://dx.doi.org/10.1039/c9nj90145k.

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Correction for ‘Graphene oxide–TiO<sub>2</sub> composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines’ by Shweta Kumari et al., New J. Chem., 2016, 40, 5053–5060.
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Kumari, Shweta, Amiya Shekhar, and Devendra D. Pathak. "Graphene oxide–TiO2 composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines." New Journal of Chemistry 40, no. 6 (2016): 5053–60. http://dx.doi.org/10.1039/c5nj03380b.

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Sagar, S. S., and R. P. Chavan. "SiO2:MgMnO3: An Efficient Heterogeneous Catalyst for One Pot Synthesis of 1H-Pyrazolo[1,2-b]phthalazine-5,10-dione Derivatives." Asian Journal of Chemistry 32, no. 10 (2020): 2489–94. http://dx.doi.org/10.14233/ajchem.2020.22707.

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The present study deals with hydrothermal synthesis of SiO2 composite MgMnO3 catalyst. The obtained polycrystalline product was analyzed by using physical investigative techniques including XRD, SEM, EDAX, TEM, SAED and BET surface area. The product corresponded to average particle size of 100 nm by TEM images. The BET surface area was found 234.38 cm2/g for SiO2 composite MgMnO3 catalyst which indicates a good catalytic property. The synthesized catalyst was applied for the synthesis of 1H-pyrazolo[1,2-b]-phthalazine-5,10-dione in presence of ethanol as a solvent at 80 ºC. The current procedu
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Fu, Xinliang, Yankui Meng, Xiaofang Li, Marcin Stępień, and Piotr J. Chmielewski. "Extension of antiaromatic norcorrole by cycloaddition." Chemical Communications 54, no. 20 (2018): 2510–13. http://dx.doi.org/10.1039/c8cc00447a.

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Dissertations / Theses on the topic "Composite pyrazole"

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Castro, Raphael Andrade de. "Avalia??o do potencial analg?sico e anti-inflamat?rio do composto piraz?lico 1,5-difenil-3-hidrazinopirazol(a) - DHP." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/jspui/1177.

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Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-24T15:39:27Z No. of bitstreams: 1 2011 - Raphael Andrade de Castro.pdf: 917522 bytes, checksum: f65a225b9fc808c90016c649f5cb2be1 (MD5)<br>Made available in DSpace on 2016-08-24T15:39:27Z (GMT). No. of bitstreams: 1 2011 - Raphael Andrade de Castro.pdf: 917522 bytes, checksum: f65a225b9fc808c90016c649f5cb2be1 (MD5) Previous issue date: 2011-02-18<br>causing pain as a constant feature. The pyrazole compounds are the drugs of synthetic origin in their chemical structure consisting of a ring pirazol?nico, with which several studies sho
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Grimes-Marchan, Thomas V. "Quantum Perspectives on Physical and Inorganic Chemistry." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5172/.

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Applications of computational quantum chemistry are presented, including an analysis of the photophysics of cyclic trinuclear coinage metal pyrazolates, an investigation into a potential catalytic cycle utilizing transition metal scorpionates to activate arene C-H bonds, and a presentation of the benchmarking of a new composite model chemistry (the correlation consistent composite approach, ccCA) for the prediction of classical barrier heights. Modeling the pyrazolate photophysics indicates a significant geometric distortion upon excitation and the impact of both metal identity and substituen
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Upadhyay, Prabhat Kumar. "Design, Synthesis, and Characterization of Aqueous Polymeric Hybrid Composites and Nanomaterials of Platinum(II) and Gold(I) Phosphorescent Complexes for Sensing and Biomedical Applications." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822788/.

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The two major topics studied in this dissertation are the gold(I) pyrazolate trimer {[Au(3-R,5-R’)Pz]3} complexes in aqueous chitosan polymer and phosphorescent polymeric nanoparticles based on platinum(II) based complex. The first topic is the synthesis, characterization and optical sensing application of gold(I) pyrazolate trimer complexes within aqueous chitosan polymer. A gold(I) pyrazolate trimer complex, {[Au(3-CH3,5-COOH)Pz]3}, shows high sensitivity and selectivity for silver ions in aqueous media, is discussed for optical sensing and solution-processed organic light emitting diodes (O
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Yuan, Chun-Wei. "Mecanisme de la formation de pyrazines par la reaction de maillard." Clermont-Ferrand 2, 1988. http://www.theses.fr/1988CLF21131.

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Sahmoune, Amar. "Extractions synergiques de metaux divalents de transition par association d'une acyl-4-pyrazolone-5 avec des polyethers cycliques et acycliques." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13116.

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Extractions de co. Zu. Cd et cu divalents par les melanges phenyl-1 methyl-3 benzoyl-4 pyrazolone-5 ethers crown. La coextraction alcalins-alcalinoterreux complexes par les composes crown et des metaux divalents est possible quand la taille de la cavite de l'ether-crown est voisine de celle de l'alcalin (ou alcalino-terreux) et quand l'ion ml::(3)**(-) est suffisamment stable
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RIFI, EL HOUSSEINE. "Extraction metallique par des gels hydrophobes." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13158.

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Etude de l'extraction liquide-gel de cu, v et eu. On montre que les lois de la thermodynamique d'extraction de cu par les acyl-4 pyrazolones-5 ne sont pas pertubees par la presence du polymere, mais que la cinetique l'est fortement. L'impregnation des polybutadienes par la trilamylamine presente des difficultes; l'utilisation de pvc gonfle dans des solutions d'oxyde d'octylphenyl n,n-diisobutylcarbamoylmethylphosphine dans tbp est interessante
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Hlimi, Fouzia. "Cycloaddition de diarylnitrilimines sur des dérivés de la benzodioxine 1,4 et de la benzoxazine-1,4 : regiochimie de la réaction sur un alcene portant un groupe donneur et un groupe accepteur sur la même extrêmité." Besançon, 1987. http://www.theses.fr/1987BESA2018.

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La cycloaddition dipolaire 1,3 des diarylnitrilimines sur le benzodioxinne-1,4 carboxylate-2 d'ethyle conduit a des cycloadduits qui apres ouverture donnent des derives de l'aryloxy-4 diphenyl-1,3 pyrazole qui ne sont pas accessibles par une methode classique de synthese de pyrazoles
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Martens, Thierry. "Comportement physico-chimique de dithiolel, 2 thiones-3 : relation structure- activite antibilharzienne." Paris 6, 1988. http://www.theses.fr/1988PA066397.

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La reduction electrochimique de (pyradinyl-2)-5- ou (pyridyl-2)-5 methyl-4 dithiole-1,2 thiones-3 est etudiee; elle conduit a des pyrrolo (1,2-a) pyrazines, ou des indolizines respectivement. Des hypotheses sont proposees pour expliquer l'activite anthelminthique des composes du titre
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LAKKIS, ZAHREDDINE ZEINAB. "Aspects thermodynamiques et cinetiques de l'extraction de metaux divalents par des acyl-4-pyrazolones-5." Strasbourg 1, 1986. http://www.theses.fr/1986STR13001.

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Extraction de cd et zn a partir des milieux aqueux, perchlorate, nitrate et sulfate par des melanges de phenyl-1 methyl-3 benzoyl-4 pyrazolone-5 et de sels d'ammonium lipophiles. Le pyrazolonate de nh::(4) est l'agent reel de synergie. Mecanisme de transport de cuivre par des acyl-4 pyrazolones-5 a travers une membrane liquide epaisse
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Metabanzoulou, Jean-Pierre. "Mecanisme de la complexation de l'ion uo : :(2)**(2+) par des di(acyl-4 pyrazolones-5), des ethers-couronnes, des diazapolyoxamacrocycles et des ligands apparentes." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13146.

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Etude spectrophotometrique de la stabilite des complexes de l'ion uo::(2)**(2+) et de l'ion cu**(2+), dans l'eau et eau-acetonitrile. Structures possibles des complexes 1:1, 1:2 et 2:1. Mecanismes de formation des complexes
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