Relevant bibliographies by topics / Azo Coumarins

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Azo Coumarins'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Azo Coumarins"

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Karami, Bahador, and Mahtab Kiani. "Application of 7-amino coumarins for the synthesis of novel and thermally stable water-insoluble azo-coumarin dyes." Journal of the Iranian Chemical Society 13, no. 1 (2015): 111–16. http://dx.doi.org/10.1007/s13738-015-0718-5.

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Karami, Bahador, and Mahtab Kiani. "Green Synthesis of Novel Class of Azo Dyes Based on Naphthols, Coumarins, and Phenols with Molybdate Sulfuric Acid." Polycyclic Aromatic Compounds 37, no. 4 (2016): 257–66. http://dx.doi.org/10.1080/10406638.2015.1088045.

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Shreevatsa, Bhargav, Chandan Dharmashekara, Vikas Halasumane Swamy, et al. "Virtual Screening for Potential Phytobioactives as Therapeutic Leads to Inhibit NQO1 for Selective Anticancer Therapy." Molecules 26, no. 22 (2021): 6863. http://dx.doi.org/10.3390/molecules26226863.

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NAD(P)H:quinone acceptor oxidoreductase-1 (NQO1) is a ubiquitous flavin adenine dinucleotide-dependent flavoprotein that promotes obligatory two-electron reductions of quinones, quinonimines, nitroaromatics, and azo dyes. NQO1 is a multifunctional antioxidant enzyme whose expression and deletion are linked to reduced and increased oxidative stress susceptibilities. NQO1 acts as both a tumor suppressor and tumor promoter; thus, the inhibition of NQO1 results in less tumor burden. In addition, the high expression of NQO1 is associated with a shorter survival time of cancer patients. Inhibiting N
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Ayare, Nitesh N., Supriya H. Ramugade, and Nagaiyan Sekar. "Photostable coumarin containing azo dyes with multifunctional property." Dyes and Pigments 163 (April 2019): 692–99. http://dx.doi.org/10.1016/j.dyepig.2018.12.050.

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Tadhamun Sabah Younus and Tariq Ali Fahd. "Synthesis and Thermal Studies of Some Metal azo Complexes Derived from Hydroxy coumarin." Journal of Kufa for Chemical Sciences 2, no. 9 (2023): 163–77. http://dx.doi.org/10.36329/jkcm/2022/v2.i9.11156.

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In the current study, of two azo dyes made from coumarin and procaine (T1) and coumarin and Sulfa guanidine (T2)were synthesized. The dyes were characterized by IR, CHN, 1H-NMR, 13C-NMR and MS spectroscopic techniques. . To make azo metal(II) complexes, these novel legands were combined with acetate salts of copper(II) and nickel(II) in a 1:2 molar ratio.The metal to ligand ratio [M:L] in all complexes, according to analytical data, is (1:2).This ligand behaves as a bidentate chelating, according to spectral and analytical data.Thermo gravimetric (TGA) analysis was used to study the thermal be
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Rasheed, Omer, and Peter Quayle. "Azo Dyes: New Palladium- and Copper-Catalysed Coupling Reactions on an Old Template." Synthesis 50, no. 13 (2018): 2608–16. http://dx.doi.org/10.1055/s-0036-1591571.

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The elaboration of azo dyes using a variety of transition-metal-catalysed reactions (Stille, Heck, Ullmann, and Suzuki couplings) is reported. This methodology has been applied to the synthesis of functionalised coumarin azo dye conjugates, substrates which may find potential application in the development of new sensors.
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Hagar, M., H. A. Ahmed, and O. A. Alhaddadd. "DFT Calculations and Mesophase Study of Coumarin Esters and Its Azoesters." Crystals 8, no. 9 (2018): 359. http://dx.doi.org/10.3390/cryst8090359.

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Two groups of coumarin derivatives, 4-methyl-2-oxo-2H-chromen-7-yl 4-alkoxybenzoates (coumarin esters), In, and 4-methyl-2-oxo-2H-chromen-7-yl 4-(2-(4-alkoxyphenyl)diazenyl) benzoates (coumarin azoesters), IIn, were synthesized and investigated for their mesophase behavior and stability. Each group constitutes five series that differ from each other by length of the mesogenic part. Within each homologous series, the length of the terminal alkoxy group varies between 6, 8, 10, 12 and 16 carbons. Mesophase behavior was investigated by differential scanning calorimetry (DSC) and identified by pol
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Tahir, Tehreem, Muhammad Ashfaq, Humna Asghar, Mirza I. Shahzad, Rukhsana Tabassum, and Areeba Ashfaq. "Medicinal Importance of Azo and Hippuric Acid Derivatives." Mini-Reviews in Medicinal Chemistry 19, no. 9 (2019): 708–19. http://dx.doi.org/10.2174/1389557518666180727162018.

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In this review, specific therapeutic and medicinal advantages including antiviral, antibacterial, antifungal and antitumor, strategies for drug designing, structure-activity relationship, advances in the syntheses of azo and hippuric acid derivatives of more than 50 compounds have been discussed since 2009-2018. It is found that phenyl-diazenyl azo derivatives and pyridinyl substituted hippuric acid derivatives showed promising antiretroviral potential. The incorporation of azo functionality to the respective quinolones and coumarin moieties and the insertion of thiocarbazone to hippuric acid
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H.A., Imanli, and Serkerov S.V. "The Coumarins of the Roots of Heracleum sosnowskyi." Journal of Life Sciences and Biomedicine 71, no. 3 (2016): 35–38. https://doi.org/10.5281/zenodo.8157036.

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6 coumarinic derivatives were isolated from the roots of Heracleum sosnowskyi Manden, collected in September 2013 in the vicinity of the village of Kuzun of the Gusar region of Azerbaijan by chromatography of the amount of extractives obtained by extracting plant material (shredded, air- dried roots) with acetone on a column of an Aho,: 1) C₁H₂O₁, m.p. 161-163°C; II) C₁H₂O₂, m.p. 138- 139°C; III) C₁H,O, m.p. 189-191°C; IV) C₁H₂O, m.p. 145-146°C; V) CHO, m.p. 116-118, VI) C₁H₁Os, m.p. 118-120°C; Based on the data obtained, when interpreting IR and 'H NMR spectra, the obt
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Papia, Datta, Halder Ajanta, Baran Manik Nabin, and Sinha Chittaranjan. "Photovoltaic properties of 2-(coumarinyl-6-azo)imidazoles and their derivatives." Journal of Indian Chemical Society Vol. 91, May 2014 (2014): 925–31. https://doi.org/10.5281/zenodo.5720159.

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Department of Chemistry, Jadavpur University, Kolkata-700 032, India <em>E-mail </em>: c_r_sinha@yahoo.com Department of Physics, Jadavpur University, Kolkata-700 032, India <em>Manuscript received online 08 August 2013, revised 15 October 2013, accepted 21 November 2013</em> Photovoltaic property of 2-(coumarinyl-6-azo)imidazoles and their derivatives, 1-alkyl-2-(coumarinyl-6- azo)imidazoles have been studied. Light-energy conversion efficiency (ɳ ) is dependent on charge anisotropy in the molecule. Substitution of methyl group (1-Me) at imidazolyl ring increases the photovoltaic power conver
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Dissertations / Theses on the topic "Azo Coumarins"

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Daras, Etienne. "Synthèse et évaluation biologique d’analogues aza de la combrétastatine A-4 comme inhibiteurs de la polymérisation de la tubuline." Aix-Marseille 1, 2008. http://www.theses.fr/2008AIX11079.

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Plusieurs séries de dérivés quinoléiques, isoquinoléiques et néoflavonoiques ont été préparées via une réaction clé de couplage de Suzuki, ou par cyclisation intramoléculaire de type Bischler-Napieralski. Des études de prolifération cellulaire ont mis en évidence des activités remarquables pour les composés de type 4-arylquinoléique et 4-indolylcoumarinique. Cette activité antiproliférative a été corrélée à une activité inhibitrice de l'assemblage de la tubuline. La nature et la position des substituants sur le cycle A n'influencent que très finement cette activité. Dans la série des dérivés n
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Yao, Po-Hsin, and 姚伯昕. "1.Diversity-Oriented Synthesis of Coumarin-Linked Benzimidazoles via a One-Pot, Three-Step, Intramolecular Knoevenagal Cyclization 2.Multicomponent Reaction Synthesis of 2-aza-7-arylpyrrolizidine alkaloid Derivatives." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/5p73u6.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>105<br>First part:One-pot, three step synthesis of 3-(1-propyl-1H- benzo[d]imidazol-2-yl)-2H-chromen-2-one, using 2-cyano-N-(2-(propylamino)phenyl)acetamide compound 11 under p-toluene sulfonic acid catalyst to undergo intramolecular cyclization to form 2-(1-propyl-1H-benzo[d]imidazol-2-yl)acetonitrile compound 12, then add proper triethylamine to undergo Knoevenagel condensation reaction to get intermediate 14, and finally add 1N HCl to provide compound 15. Second part: Compounds 12 obtained in the first part of the study can further synthesize polycyclic structur
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Lin, Jhih-Yu, and 林志宇. "Part I : Design and synthesis of a coumarin/ anthrone-fused compound and its potential thermochromism studyPart II: Design and synthesis of 5-aza-4-hydroxycoumarin-derived zwitterions as potential organophotoredox sensitizer." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/85849181827392246036.

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碩士<br>東海大學<br>化學系<br>99<br>Part I: Design and synthesis of a coumarin/ anthrone-fused compound and its potential thermochromism study A coumarin/anthrarufin-fused compound 1 was designed and synthesized in 5 steps with an overall yield of 3.38% to investigate its potential thermochromic properties. Unfortunately, the prepared compound 1, unlike bianthrone type thermochromic colorants, was found to be heat insensitive, and did not change color when being heated or at low temperature. The lack of the thermochromism of the prepared compound presumably due to the relative small steric hindrance be
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Cheng, Yu-chi, and 鄭玉麒. "Synthesis and Characterization of Coumarin-based Organic Dye (4-Oxo-5-{5-[2-(1,1,6,6-tetramethyl-10-oxo-2,3,5,6-tetrahydro-1H,4H,10H-11-oxa-3a-aza-benzo[de]anthracen-9-yl)-benzothiazol-6-yl]-thiophen-2-ylmethylene}-2-thioxo-thiazolidin-3-yl)-acetic Acid." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59815753042855872033.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>96<br>We reported here on the synthesis and photophysical properties of a no vel coumarin-based organic dye (14) as well as its application dye-sensiti zed nanocrystalline TiO2 solar cells (DSSCs). The key step of the synthesis of new coumarin-based organic dye（14）for dye-sensitized solar cell as shown in scheme 1 ,is condensation reacti on of 2-Amino-5-bromobenzenethiol (3) and 3,3,3- triethoxypropionic ethyl ester (5) to give the corresponding (6-Bromo-benzothiazol-2-yl) - ac etic acid ethyl ester (6) in the presence of acetic acid and THF as solven t .Subsequent
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Yan, Meng-hua, and 顏夢華. "Synthesis and Characterization of a Novel Coumarin-based Organic Dye 2-Cyano-3-{5-[2-(1,1,6,6-Tetramethyl-10-oxo-2,3,5,6-tetrahydro-1H,4H,10H-11-oxa-3a-aza-benzo[de]anthracen-9-yl)-benzothiazol-6-yl]-thiophen-2-yl}-acrylic Acid for Organic Dye-Sensitize." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/52891308576035894600.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>96<br>We reported here on the synthesis and photophysical properties of a novel coumarin-based organic dye (14) as well as its application in dye- sensitized nanocrystalline TiO2 solar cells (DSSCs). The key step of the synthesis of a new coumarin-based organic dye(14) for dye-sensitized solar cell as shown in scheme I, is the condensation reaction of 2-Amino-5-bromobenzenethiol (3) and 3,3,3-triethoxypropio nic ethyl ester (4) to give the corresponding (6-Bromo-benzothiazol-2-yl )acetic acid ethyl ester (6) in the presence of acetic acid and THF as solv ent. Subsque
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Book chapters on the topic "Azo Coumarins"

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Gatt, Lucienne, and Pierre Schembri Wismayer. "Phenolic Compounds – An Emerging Group of Natural Compounds against Leukaemia: in vitro, in vivo and Clinical Applications." In Phenolic Compounds [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98935.

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Leukaemia is the most common cancer in children under 15 years of age as well as the most common blood cancer in people older than 55. The use of all trans retinoic acid (ATRA) in combination with arsenic trioxide (ATO) for acute promyelocytic leukaemia (APL) and tyrosine kinase inhibitors for chronic myeloid leukaemia (CML) respectively, have improved survival rates. However, new, natural therapies are constantly being sought after to overcome issues with resistance, side effects and specificity. As a result of their range of health benefits, including anticancer properties, phenolic compound
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Mishra, Neha, and Rashmi Srivastava. "Therapeutic and Pharmaceutical Potential of Cinnamon." In Ethnopharmacological Investigation of Indian Spices. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2524-1.ch010.

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Cinnamon has been used as a spice, condiment, and aromatic plant since centuries ago. Cinnamon is a small evergreen tree belonging to the genus Cinnamomum in the family Lauraceae. There are more than 250 species of cinnamon worldwide. In India, Cinnamomum verum and Cinnamomum cassia are the most common species grown in the Himalaya region. They have been used as folk medicine for the treatment of nausea, flatulent dyspepsia, coughs, diarrhea, malaria, gastric disorder, and to alleviate pain and inflammation in rheumatic arthritis. Therapeutic properties of cinnamon are due to the presence of b
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Mishra, Neha, and Rashmi Srivastava. "Therapeutic and Pharmaceutical Potential of Cinnamon." In Research Anthology on Recent Advancements in Ethnopharmacology and Nutraceuticals. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3546-5.ch036.

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Cinnamon has been used as a spice, condiment, and aromatic plant since centuries ago. Cinnamon is a small evergreen tree belonging to the genus Cinnamomum in the family Lauraceae. There are more than 250 species of cinnamon worldwide. In India, Cinnamomum verum and Cinnamomum cassia are the most common species grown in the Himalaya region. They have been used as folk medicine for the treatment of nausea, flatulent dyspepsia, coughs, diarrhea, malaria, gastric disorder, and to alleviate pain and inflammation in rheumatic arthritis. Therapeutic properties of cinnamon are due to the presence of b
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Conference papers on the topic "Azo Coumarins"

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Knoesen, A., M. A. Mortazavi, S. T. Kowel, J. M. Hoover, R. A. Henry, and G. A. Lindsay. "Nonlinear optical properties of corona-onset poled films of coumarin-substituted copolymers." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.mc3.

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Previously, corona-onset poling at elevated temperatures (COPET) was demonstrated to produce large orientational order by aligning nonlinear chromophores in a polymeric host.1,2 The film system consisted of nonlinear azo dye chromophores dissolved in polymethyl methacrylate (PMMA). The films exhibited large and stable second harmonic intensities, but the films were strongly absorbing in the visible. For this investigation, new materials were developed that consisted of a coumarin-based chromophore attached to a PMMA backbone through an alkyl spacer with various dye concentrations. Spincast fil
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Sarkas, Harry W., Charles D. Merritt, and Zakya H. Kafafi. "Preparation, Optical Spectroscopy, and Fluorescence of Molecular Organic Composites for Light-Emitting Diodes." In Organic Thin Films for Photonic Applications. Optica Publishing Group, 1995. http://dx.doi.org/10.1364/otfa.1995.md.35.

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Electroluminescence from small organic molecules has been known for some time. Thirty years ago, Helfrich and Schneider reported blue-violet electroluminescence in anthracene with an external quantum efficiency as high as 8%.1 This quantum efficiency is much better than that for the best polymer-based light-emitting diode (LED) reported to date.2 In spite of the superior quantum efficiency of molecular-based electroluminescent devices, no major progress was achieved until fairly recently when Tang and VanSlyke reported the first low-voltage organic LED with an external quantum efficiency of 1%
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Reports on the topic "Azo Coumarins"

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Galili, Gad, Harry J. Klee, and Asaph Aharoni. Elucidating the impact of enhanced conversion of primary to secondary metabolism on phenylpropanoids secondary metabolites associated with flavor, aroma and health in tomato fruits. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7597920.bard.

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• Targeted manipulating Phenylalanine (Phe) synthesis is one of the most powerful strategies to boost the biologically and economically important secondary metabolites, including phenylpropaniods, aromatic volatiles and specialized secondary metabolites. • Over-expression of the petunia MYB transcript factor, ODORANT1 (ODO1), results in significant alterations of the levels of specific phenylpropanoid compounds in plants. • Our previous studies indicated that ectopic expression of the feedback-insensitive AroG could break the bottleneck between primary and secondary metabolisms in tomato, ther
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