Relevant bibliographies by topics / 5-A]quinoxaline

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic '5-A]quinoxaline'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "5-A]quinoxaline"

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Gül, Ahmet, Ali İ. Okur, Sevket Can, and Özer Bekâro??lu. "A simple synthesis of 2,2′-Azobis[(15-crown-5)-eno[g]quinoxaline]." Chemische Berichte 119, no. 12 (1986): 3870–72. http://dx.doi.org/10.1002/cber.19861191232.

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Yu, Changjiang, Tingting Li, Qinghua Wu, Wenbo Hu, Erhong Hao, and Lijuan Jiao. "Synthesis structural and spectroscopic properties of quinoxaline-bridged bisBODIPYs." Journal of Porphyrins and Phthalocyanines 22, no. 09n10 (2018): 899–907. http://dx.doi.org/10.1142/s1088424618500797.

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Two novel quinoxaline-bridged bisBODIPYs have been synthesized by the condensation of 2,3-bis(5-formylpyrrol-2-yl)quinoxaline with 3-ethyl-2,4-dimethylpyrrole followed by a modification using a Knoevenagel reaction. They were well characterized by X-ray diffraction, NMR, HRMS UV-vis and fluorescence spectroscopy. These two quinoxaline-bridged bisBODIPYs have unusual broad absorption bands, which are different from those of typical BODIPYs They exhibit broad red-shifted emission bands centered at around 610 nm and 730 nm respectively with larger Stokes shifts at the range of 1421–2136 cm[Formul
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3

Wickham, Laura M., Joseph M. Tanski, and Jocelyn M. Nadeau. "Crystal structure of a fluorescent C-shaped molecule containing closely stacked bithiophene-substituted quinoxaline rings." Acta Crystallographica Section C Structural Chemistry 73, no. 3 (2017): 276–79. http://dx.doi.org/10.1107/s2053229617001991.

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Molecules with well-defined structures that feature closely stacked aromatic rings are important for understanding π–π interactions. A previously reported C-shaped molecule with bithiophene-substituted quinoxaline rings suspended from an aliphatic bridge that holds the aromatic rings in close proximity exists as a pair of syn and anti diastereomers. The anti isomer, namely (1α,2β,4β,5α,16α,17β,19β,20α)-1,5,16,20-tetrachloro-31,31,32,32-tetramethoxy-11,26-bis[5-(thiophen-2-yl)thiophen-2-yl]-7,14,22,29-tetraazanonacyclo[18.10.1.15,16.02,19.04,17.06,15.08,13.021,30.023,28]dotriaconta-6(15),7,9,11
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Schramm, Frank, Dirk Walther, Helmar Görls, Christian Käpplinger, and Rainer Beckert. "Trifluoromethylaryl-Substituted Quinoxalines: Unusual Ruthenium- Amidininate Complexes and their Suitability for Anellation Reactions." Zeitschrift für Naturforschung B 60, no. 8 (2005): 843–52. http://dx.doi.org/10.1515/znb-2005-0805.

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The reaction of the 2,3-dianilino-quinoxaline 1 with an equivalent of triethyl orthoformiate results in a cyclic aminalester 2. An excess of triethyl orthoformate results in the carbene dimer 4. With the help of boron trifluoride, 2 can be transformed into the imidazolium salt 3. Reaction of 1 with KOtC4H9 leads to a quinoxaline derivative 5 under anellation of a benzene ring whereas the related pyrazino-quinoxaline 6 (formed from tetraaminobenzene tetrahydrochloride and bis-(3- trifluoromethylphenyl) oxalimidoyl chloride) does not react under similar conditions. However, 6 can be activated to
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5

Wang, Wei, Ning-Ning Pan, and Bing Zhao. "2,3-Bis[(1-phenyl-1H-tetrazol-5-ylsulfanyl)methyl]quinoxaline." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o2817—o2818. http://dx.doi.org/10.1107/s1600536806021659.

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The title compound, C24H18N10S2, crystallizes with two independent molecules in the asymmetric unit. The two terminal (1-phenyltetrazol-5-yl)sulfanyl groups adopt a trans configuration with respect to the central quinoxaline ring system in both independent molecules.
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6

Perfetti, Gracia A. "Determination of Heterocyclic Aromatic Amines in Process Flavors by a Modified Liquid Chromatographic Method." Journal of AOAC INTERNATIONAL 79, no. 3 (1996): 813–16. http://dx.doi.org/10.1093/jaoac/79.3.813.

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Abstract A liquid chromatographic method for determining heterocyclic aromatic amines (HAAs) was modified so that it can be used to quantitate the following 5 HAAs in complex process flavors: 2-amino-3-methylimidazo[4,5-f]quinoline (IQ); 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MelQ); 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MelQx); 2-amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline (diMelQx); and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP). By changing the initial extraction procedure, PhIP recovery improved from 35 to 87%. An additional cleanup step using ion-exchange soli
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7

Matsumoto, Shoji, Shunsuke Abe, and Motohiro Akazome. "Selective synthesis and optical properties of diimidazo[1,2-a:5′,1′-c]quinoxaline derivatives." Tetrahedron 75, no. 26 (2019): 3657–65. http://dx.doi.org/10.1016/j.tet.2019.05.041.

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8

Ou, Zhongping, Wenbo E, Jianguo Shao, et al. "Electrochemical and spectroelectrochemical properties of building blocks for molecular arrays: reactions of quinoxalino[2,3-b]porphyrins containing metal(II) ions." Journal of Porphyrins and Phthalocyanines 09, no. 02 (2005): 142–51. http://dx.doi.org/10.1142/s1088424605000216.

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Quinoxalino[2,3-b]porphyrins are laterally-extended porphyrins with aromatic ring systems fused to the β,β'-positions of a pyrrolic ring of the macrocycle. They are building blocks for coplanar laterally-extended oligoporphyrins with applications in molecular electronics. The electrochemistry and spectroelectrochemistry of four such quinoxalinoporphyrins containing metal(II) ions and one free-base quinoxalinoporphyrin dissolved in nonaqueous media have been investigated and the data are compared to that seen for the same derivatives of the parent macrocycle lacking the fused quinoxaline ring.
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9

Chu, Daniel T. W., Robert E. Maleczka, and Carl W. Nordeen. "Synthesis of 4,12-dihydro-4-oxoquino-[1,8a,8-a,b]quinoxaline-5-carboxylic acid derivatives." Journal of Heterocyclic Chemistry 25, no. 3 (1988): 927–30. http://dx.doi.org/10.1002/jhet.5570250343.

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10

Chaouiki, Abdelkarim, Maryam Chafiq, Mohamed Rbaa, et al. "New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations." Coatings 10, no. 9 (2020): 811. http://dx.doi.org/10.3390/coatings10090811.

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There has been substantial research undertaken on the role of green synthesized corrosion inhibitors as a substantial approach to inhibit the corrosion of metals and their alloys in acidic environments. Herein, electrochemical studies, surface characterization, and theoretical modeling were adopted to investigate the corrosion inhibition proprieties of novel synthesized quinoxaline derivatives bearing 8-Hydroxyquinoline, namely 1-((8-hydroxyquinolin-5-yl) methyl)-3,6-dimethylquinoxalin-2(1H)-one (Q1) and 1-((8-hydroxyquinolin-5-yl)methyl) quinoxalin-2(1H)-one (Q2) on mild steel corrosion in 1
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Dissertations / Theses on the topic "5-A]quinoxaline"

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Bou, Karroum Nour. "Synthèse et développement de nouvelles molécules hétérocycliques tricycliques : étude de leurs propriétés immunomodulatrices." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTT014/document.

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Les récepteurs Toll-like 7 et 8 jouent un rôle important dans l’activation de la réponse immunitaire innée et adaptative. Leur stimulation conduit à la production des cytokines pro-inflammatoires et d’interférons de type I. L’imiquimod et son dérivé le résiquimod sont les premières molécules de faible poids moléculaire décrites comme agonistes du TLR7 et TLR8. Ces deux molécules ont montré des activités anticancéreuses et adjuvantes très importantes. Récemment, les TLR 7 et 8 ont fait l’objet de plusieurs publications visant à développer de nouveaux agonistes TLR7 et/ou TLR8 dans la perspectiv
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Conference papers on the topic "5-A]quinoxaline"

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Alcolea, Verónica, Deepkamal Karelia, Manoj K. Pandey, et al. "Abstract 1166: Identification of a novel quinoxaline-isoselenourea targeting STAT3 pathway as a potential melanoma therapeutic." In Proceedings: AACR Annual Meeting 2017; April 1-5, 2017; Washington, DC. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.am2017-1166.

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2

Zhou, Qibing, Zhiwei Wang, Rong Yang, Ting Qian, and Dejun Zhang. "Abstract 177: Thymidine quinoxaline conjugates as a novel selective and effective photosensitizer for anticancer photodynamic therapy." In Proceedings: AACR Annual Meeting 2017; April 1-5, 2017; Washington, DC. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.am2017-177.

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