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Journal articles on the topic 'Synthesis; Characterization; Quinoxaline-1'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

H., Abdellatif, and Abd El Rady E. "Facile route for the synthesis and characterization of new naphtho[2,3-f]quinoxaline-dione, trione and anthra-dione derivatives." Chemistry International 6, no. 3 (2020): 122–30. https://doi.org/10.5281/zenodo.3552253.

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In the present study, addition of nitroso group at position 1 of 2-aminoanthraquinone (1) to yield 2-amino-1-nitroanthraquinone (2) was carried out by the reaction of compound (1) with sodium nitrite in water. Compound (2) was used as starting material to produce many new naphtho[2,3-<em>f</em>] quinoxaline-dione, trione, naphtho-pyrazole quinoxaline-dione, anthra-triazine-dione, naphtho-thiazole quinoxaline-dione and anthrabenzo-triazepine-dione derivatives by elimination of one molecule of water as an initial reaction step. The reacting moieties were nitroso and amino function groups to yiel

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2

Guillon, Jean, Solène Savrimoutou, Sandra Albenque-Rubio, et al. "Synthesis, Crystal Structure and Anti-Leukemic Activity of (E)-Pyrrolo[1,2-a]quinoxalin-4-yl)-1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one." Molbank 2023, no. 3 (2023): M1691. http://dx.doi.org/10.3390/m1691.

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(E)-Pyrrolo[1,2-a]quinoxalin-4-yl)-1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one was designed then synthesized using a multi-step pathway starting from commercially available 2-nitroaniline. Structure characterization of this original substituted pyrrolo[1,2-a]quinoxaline compound was achieved by using FT-IR, 1H-NMR, 13C-NMR, X-Ray and HRMS spectral analysis. This new pyrroloquinoxaline shows interesting cytotoxic potential against different human leukemia cell lines (MV4-11, K562, MOLM14 and Jurkat cells).

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3

Guillon, Jean, Solène Savrimoutou, Sandra Albenque-Rubio, Noël Pinaud, Stéphane Moreau, and Vanessa Desplat. "Synthesis, Crystal Structure and Anti-Leukemic Activity of 1,3-Dihydro-1-{1-[4-(4-phenylpyrrolo[1,2-a]quinoxalin-3-yl)benzyl]piperidin-4-yl}-2H-benzimidazol-2-one." Molbank 2022, no. 1 (2022): M1333. http://dx.doi.org/10.3390/m1333.

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1,3-Dihydro-1-{1-[4-(4-phenylpyrrolo[1,2-a]quinoxalin-3-yl)benzyl]piperidin-4-yl}-2H-benzimidazol-2-one has been synthesized through a multi-step pathway starting from commercially available 2-nitroaniline. A structure characterization of this new substituted pyrrolo[1,2-a]quinoxaline compound was achieved by using FT-IR, 1H-NMR, 13C-NMR, X-Ray and HRMS spectral analysis. This new pyrroloquinoxaline derivative shows an interesting cytotoxic potential against several human leukemia cell lines (HL60, K562 and U937 cells).

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Guillon, Jean, Solène Savrimoutou, Sandra Rubio, et al. "1-Phenyl-8-[[4-(pyrrolo[1,2-a]quinoxalin-4-yl)phenyl]methyl]-1,3,8-triazaspiro[4.5]decan-4-one: Synthesis, Crystal Structure and Anti-Leukemic Activity." Molbank 2020, no. 1 (2020): M1113. http://dx.doi.org/10.3390/m1113.

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1-Phenyl-8-[[4-(pyrrolo[1,2-a]quinoxalin-4-yl)phenyl]methyl]-1,3,8-triazaspiro[4.5]decan-4-one has been successfully synthesized via a multi-step pathway starting from 2-nitroaniline. Structure characterization of this original pyrrolo[1,2-a]quinoxaline derivative was achieved by FT-IR, 1H-NMR, 13C-NMR, X-Ray and HRMS spectral analysis. This title compound shows interesting cytotoxic potential against several human leukemia cell lines (K562, HL60, and U937 cells).

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5

Wang, Gang, Jie Li, Yixiang Li, et al. "A new type of solid-state luminescent 2-phenylbenzo[g]furo[2,3-b]quinoxaline derivative: synthesis, photophysical characterization and transporting properties." Journal of Materials Chemistry C 7, no. 31 (2019): 9690–97. http://dx.doi.org/10.1039/c9tc02539a.

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We developed a new synthesis method of furo [2,3-b] quinoxaline core and report a new type of 2-phenylbenzo[g]furo [2,3-b] quinoxaline organic semiconductors, which shows 22.1% PLQY in solid powders and hole mobility of 2.58 × 10<sup>−2</sup> cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>.

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6

Aesha F SH Abdassalam, Aesha F. SH Abdassalam, Semih Kurban Semih Kurban, and Nahide Gulsah Deniz and Cigdem Sayil Nahide Gulsah Deniz and Cigdem Sayil. "Synthesis and Characterization of New Naphtho- and Tetracyclic Diazaquinone Derivatives." Journal of the chemical society of pakistan 41, no. 5 (2019): 834. http://dx.doi.org/10.52568/000805/jcsp/41.05.2019.

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In this study, new 1,4-naphtho- and 5-nitro-1,4-naphtho derivatives containing N- and N,N-substituted groups which has not been reported yet, have been synthesized from 2,3-dichloronaphthalene-1,4-diones (1,9). Compounds of 2-choloro-3-((2,4,6-triflorophenyl)amino)naphthalene-1,4-dione (3) and 2-chloro-3-((4-florophenyl)amino)naphtalene-1,4-dione (7) were obtained by reactions of 2,3-dichloronaphthalene-1,4-dione 1 with 4-fluoroaniline (6) and 2,4,6-trifloroaniline (2), respectively involving a Michael addition. We reported the cyclization reactions of compounds 1 to benzo[g]pirido[3,2-b]quino

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7

Gadhave, R. V., and B. S. Kuchekar. "DESIGN, SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL EVALUATION OF NOVEL BENZOTHIAZOLE BASED [1, 2, 4]-TRIAZOLO [4, 3-A] QUINOXALINE DERIVATIVES." INDIAN DRUGS 56, no. 09 (2019): 22–29. http://dx.doi.org/10.53879/id.56.09.11901.

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Quinoxaline, triazole and benzothiazole heterocycles plays an important role in modulating biological activity. The present work describes the biological evaluation of target molecules designed using autodock vina docker. Novel benzothiazole based [1, 2, 4]-triazolo [4, 3-a] quinoxalines were synthesized by condensation of substituted 2-amino benzothiazoles and 4-chloro triazoloquinoxalines. The synthesized compounds were characterized by analysis of physical and spectral data. All synthesized compounds were screened for antioxidant activity using 1, 1-Diphenyl-2-picrylhyrazyl radical scavengi

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8

Pagare, Amol R., Rajashri B. Sawant, Somnath S. Gholap, and V.V.Patil. "GREEN SYNTHESIS OF MnO2 NANOPARTICLES USING BUNIUM PERSICUM: CHARACTERIZATION, ANTIMICROBIAL ACTIVITY, AND CATALYTIC APPLICATIONS IN THE SYNTHESIS OF QUINOXALINE." RASAYAN Journal of Chemistry 18, no. 01 (2025): 485–93. https://doi.org/10.31788/rjc.2025.1819133.

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This study introduces a green and efficient method for synthesizing manganese nanoparticles (MnO₂-NPs) using Bunium persicum extract as a reducing agent. The resulting MnO₂-NPs, characterized by UV-vis spectroscopy, SEM, and XRD, displayed spherical shapes with sizes ranging from 43.17 nm to 80.94 nm. These nanoparticles exhibited notable antibacterial properties and served as effective catalysts in the synthesis of quinoxaline derivatives through the condensation of 1,2-diaminoarenes with 1,2-diketones or 2-bromo-1-arylethanone. The method demonstrated broad substrate tolerance, mild reaction

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9

Cordes, A. Wallace, James R. Mingie, Richard T. Oakley, Robert W. Reed, and Hongzhou Zhang. "Quinoxaline-1,2,3-dithiazolyls Synthesis, EPR characterization, and redox chemistry." Canadian Journal of Chemistry 79, no. 9 (2001): 1352–59. http://dx.doi.org/10.1139/v01-122.

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Oxidation of quinoxalineaminothiol with SCl2 or S2Cl2/Cl2 affords a series of compounds based on the quinoxaline-1,2,3-dithiazole framework QDTA. Under highly oxidizing conditions, the 1,2,3-dithiazolyl ring is opened to afford the acyclic dichlorosulfimino-sulfenyl chlorides Clx-QDTA-Cl3 (x = 0, 1, 2). Reduction of these "trichloro" compounds leads to ring closure. For x = 2, reduction using S2Cl2 affords the dithiazolylium chloride [Cl2-QDTA][Cl]. For all values of x, reduction with iodide ion (3 mol equiv) affords the corresponding dithiazolyl radical [Clx-QDTA]. The radicals can be isolate

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10

Arojojoye, Adedamola S., R. Tyler Mertens, Samuel Ofori, Sean R. Parkin, and Samuel G. Awuah. "Synthesis, Characterization, and Antiproliferative Activity of Novel Chiral [QuinoxP*AuCl2]+ Complexes." Molecules 25, no. 23 (2020): 5735. http://dx.doi.org/10.3390/molecules25235735.

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Herein is reported the synthesis of two Au(III) complexes bearing the (R,R)-(–)-2,3-Bis(tert-butylmethylphosphino)quinoxaline (R,R-QuinoxP*) or (S,S)-(+)-2,3-Bis(tert-butylmethylphosphino)quinoxaline (S,S-QuinoxP*) ligands. By reacting two stoichiometric equivalents of HAuCl4.3H2O to one equivalent of the corresponding QuinoxP* ligand, (R,R)-(–)-2,3-Bis(tert-butylmethylphosphino)quinoxalinedichlorogold(III) tetrachloroaurates(III) (1) and (S,S)-(+)-2,3-Bis(tert-butylmethylphosphino)quinoxalinedichlorogold(III) tetrachloroaurates(III) (2) were formed, respectively, in moderate yields. The struc

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11

Khalil, A.L. Alabdullah, Kandil Farouk, Hamo Sameh, and Soukkarieh Ch. "Synthesis of Novel Conjugated using Knoevenagel condensation for Quinoxaline 1,4-di-N-Oxide Derivatives as Anti-leishmania Agents." Chemistry Research Journal 5, no. 5 (2020): 51–59. https://doi.org/10.5281/zenodo.13144362.

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<strong>Abstract </strong>In this paper, we report and development of new and effective  anti-leishmania agents, and with the aim of obtaining new and more potent anti-leishmania compounds which can improve the current chemotherapy anti-leishmania treatments, were synthesized connected of substituted side chains by Knoevenagel condensation to shape electron-donating groups conjugated with quinoxaline 1,4-di-<em>N</em>-oxide derivatives nucleus  and evaluated of one new quinoxaline 1,4-di-<em>N</em>-oxide derivatives<em> in vitro </em>as an antileishmanial agent and the effect of diff

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12

Journal, Baghdad Science. "Synthesis and Characterization of New Fused Heterocyclic Compounds Consisting of Benzodiazepine, Quinoxaline, Benzimidazole and Thiazole Rings." Baghdad Science Journal 5, no. 3 (2008): 440–45. http://dx.doi.org/10.21123/bsj.5.3.440-445.

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In this study, new heterocyclic compounds were synthesized through the cyclization reactions of o-phenylenediamine (1) with various organic reagents. Benzodiazepine derivatives (2-4) were obtained by reaction of (1) with ethylacetoacetate, malonic acid and acetyl acetone.Treatment of compound (1) with chloroacetamide, chloroacetic acid, p-bromophenacyl bromide and oxalic acid dihydrate afforded quinoxaline derivatives (5-8), respectively. Reaction of compound (1) with benzoic acid, piperonal, cyclohexanone and carbon disulfide resulted in the formation of compounds (9-12), respectively. Finall

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13

Salih, Nadia Adil, and Hanan Abd El-Latif Ibraheem. "Synthesis and Characterization of New Fused Heterocyclic Compounds Consisting of Benzodiazepine, Quinoxaline, Benzimidazole and Thiazole Rings." Baghdad Science Journal 5, no. 3 (2008): 440–45. http://dx.doi.org/10.21123/bsj.2008.5.3.440-445.

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In this study, new heterocyclic compounds were synthesized through the cyclization reactions of o-phenylenediamine (1) with various organic reagents. Benzodiazepine derivatives (2-4) were obtained by reaction of (1) with ethylacetoacetate, malonic acid and acetyl acetone.Treatment of compound (1) with chloroacetamide, chloroacetic acid, p-bromophenacyl bromide and oxalic acid dihydrate afforded quinoxaline derivatives (5-8), respectively. Reaction of compound (1) with benzoic acid, piperonal, cyclohexanone and carbon disulfide resulted in the formation of compounds (9-12), respectively. Finall

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14

Mitsopoulou, Christiana A., та Constantinos Dagas. "Synthesis, Characterization, DNA Binding, and Photocleavage Activity of Oxorhenium (V) Complexes withα-Diimine and Quinoxaline Ligands". Bioinorganic Chemistry and Applications 2010 (2010): 1–9. http://dx.doi.org/10.1155/2010/973742.

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The complex [ReOCl3pq] (1) (where pq = 2-(2′pyridyl)quinoxaline) has been synthesized and fully characterized by UV-Vis, FTIR, 1 and 2D NMR, and cyclic voltammetry (CV). The DNA-binding properties of the complex1as well as of the compounds [ReOCl3bpy] (2), [ReOCl3phen] (3), and pq (4) were investigated by UV-spectrophotometric (melting curves), CV (cyclic voltammetry), and viscosity measurements. Experimental data suggest that complex1intercalates into the DNA base pairs. Upon irradiation, complex1was found to promote the cleavage of plasmid pBR 322 DNA from supercoiled form I to nicked form I

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15

Raad, Saad Jihad, Abed Abdul-Reda Nabeel та Mousa Juda Al-Shamari Amer. "Synthesis, characterization and molecular docking of new deriva-tives that contain quіnoxazlіne moities and study antioxidant prop-erties". Pakistan Journal of Analytical & Environmental Chemistry 23, Special Issue (2023): 174–88. https://doi.org/10.5281/zenodo.7702678.

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<strong>   Abstract </strong>     In this study we are prepared some novel derivatives from cetirizine Impurity A by react 1-((4-chlorophenyl)(phenyl) methyl)piperazine with 2-chloro acetyl chloride to prepared 2-chloro-1-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethan-1-one (1) from this directive prepared the derivatives (2-6) when react with o-phenylenediamine derivatives to obtain analytically pure quinoxaline derivatives .The reaction was monitored by thin‐layer chromatography (TLC) technique. All new compounds were characterized by melting points, element

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16

Garypidou, Antonia, Konstantinos Ypsilantis, Evaggelia Sifnaiou та ін. "Synthesis, Characterization and Photophysical Properties of Mixed Ligand (η3-Allyl)palladium(II) Complexes with N,N’Aromatic Diimines". Chemistry 5, № 4 (2023): 2476–89. http://dx.doi.org/10.3390/chemistry5040162.

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Palladium(II) complexes of the general formula [Pd(η3-C3H5)(L)](PF6), where L is 4,7-diphenyl-1,10-phenanthroline (1), 2,9-dimethyl-1,10-phenanthroline (2), 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (3), 5-methyl-1,10-phenanthroline (4), 3,4,7,8-tetramethyl-1,10-phenanthroline (5), and 2-(2′-pyridyl) quinoxaline (6), were synthesized and characterized using high-resolution ESI-MS, NMR techniques and, in the case of (6), single-crystal X-ray diffraction methods. In addition, their photophysical properties were investigated. Complexes (1)–(6) were emitted in the greenish-blue region, with th

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17

Abid, Mohammad, and Amir Azam. "Synthesis, characterization and antiamoebic activity of 1-(thiazolo[4,5-b]quinoxaline-2-yl)-3-phenyl-2-pyrazoline derivatives." Bioorganic & Medicinal Chemistry Letters 16, no. 10 (2006): 2812–16. http://dx.doi.org/10.1016/j.bmcl.2006.01.116.

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18

Ramadan, El Sayed, Hamida M. Abdel Hamid, Sawsan A. Noureddin, and Khadija O. Badahdah. "Synthesis, characterization, and antitumor activity of some novel S-functionalized benzo[d]thiazole-2-thiol derivatives; regioselective coupling to the –SH group." Zeitschrift für Naturforschung B 73, no. 9 (2018): 647–54. http://dx.doi.org/10.1515/znb-2018-0078.

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AbstractSeveral 2-substituted sulfanyl benzo[d]thiazoles were regioselectively synthesized by the reaction of benzo[d]thiazole-2-thiol (1a) with a variety of reagents under different basic conditions. Some 2-(2,3-disubstituted propyl sulfanyl)benzo[d]thiazoles were obtained from 2-(allylthio)benzo[d]thiazole, which was prepared by the allylation of 1a with allyl bromide in the presence of sodium hydride in dry N,N-dimethylformamide. Reaction of 1a with various pyrazolyl-quinoxaline derivatives was also investigated. Better yields and shorter reaction time were achieved for the synthesis of som

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19

Sison, Girlie Naomi N., Arnie R. De Leon, and Janir T. Datukan. "Synthesis and Spectroscopic Analysis of Novel Polynuclear Rhenium(I) Complexes of the Form [Re(CO)3Cl]n[tppq] (n = 1, 2, 3, or 4; tppq = 2,3,1,8-tetra-2-Pyridylpyrazino[2,3-g]quinoxalineJ." KIMIKA 23 (March 1, 2010): 55–63. http://dx.doi.org/10.26534/kimika.v23i1.55-63.

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A number of transition metal complexes have been investigated as potential electrocatalystsfor C02 reduction. Among these are rhenium monometallic complexes, which have shownunique activity towards C02 reduction. Further development of multimetallic systems,capable of storing multiple equivalents of electrons has shown some potential in increasingthe selectivity of the C02 conversion processes toward highly reduced products. This studyreports the synthesis and characterization of novel polynuclear rhenium(I) complexes whererhenium is incorporated to the bridging ligand tppq (2,3,7,8-tetra-2-py

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20

Sallam, E. R., S. F. Aboulnaga, A. M. Samy, et al. "Synthesis, characterization of new heterocyclic compound: pyrazolyl hydrazino quinoxaline derivative: 3-[5-(hydroxy1methyl)-1-phenylpyrazol-3-yl]-2-[2, 4, 5-trimethoxybenzylidine] hydrazonyl-quinoxaline of potent antimicrobial, antioxidant, antiviral, and antitumor activity." Journal of Molecular Structure 1271 (January 2023): 133983. http://dx.doi.org/10.1016/j.molstruc.2022.133983.

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Garoufis, Achilleas, Spyros P. Perlepes, Andrew Vreugdenhil, Ian S. Butler, and Nick Hadjiliadis. "Synthesis and characterization of 1:2 metal complexes of the biheteroaromatic ligand 2-(2′-pyridyl)quinoxaline (L) and the X-ray structure of [CuL2](PF6)." Inorganica Chimica Acta 240, no. 1-2 (1995): 673–77. http://dx.doi.org/10.1016/0020-1693(95)04578-3.

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22

Sastre-Santos, Ángela. "Synthesis and Excited State Charge Separation Involving Coordinated C₆₀ of π-Extended Pyrazinepyrene Fused Zinc Phthalocyanines". ECS Meeting Abstracts MA2023-01, № 15 (2023): 1394. http://dx.doi.org/10.1149/ma2023-01151394mtgabs.

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Polycyclic aromatic hydrocarbons (PAHs) play an important role in organic electronics.[1] To increase the stability and the conjugation, pyrene units could be further attached through heteroatoms to improve the photo/chemical stability to oxygen or light.[2] In terms of the synthesis of these types of large acenes through pyrene, many routes have been studied and one of the best protocols is to synthesize the quinoxaline derivative from the dione and the corresponding diamino subunit.[3] Herein, we will present a series of pyrazinepyrene fused zinc phthalocyanines (ZnPc-Pyrn) as a new class of

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23

Rachala, Muralidhar Reddy, Laxminarayana Eppakayala, Giri Tharikoppula, and Thirumala Chary Maringanti. "An efficient synthesis, characterization and docking studies of 2‐methoxy‐3‐(1‐substituted‐1H‐pyrazol‐3‐yl)quinoxalines." Vietnam Journal of Chemistry 59, no. 2 (2021): 153–58. http://dx.doi.org/10.1002/vjch.202000139.

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AbstractA basic, proficient and P‐TSA catalyzed synthesis of quinoxalines beginning from ethyl 3‐methoxyquinoxaline‐2‐carboxylate in great yields is introduced. All the compounds synthesized were analyzed by spectral analysis.

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Etnoori, Sharada, Nagendra Babu Chilakala, Raju Barothu, A. M. S. Krishna, Vishnu Thumma, and Premalatha Kokku. "Synthesis and Characterization of Quinoxaline Anchored Bis(1,2,3-triazole) Derivatives as Potent Anticancer Agents." Asian Journal of Chemistry 36, no. 11 (2024): 2683–88. http://dx.doi.org/10.14233/ajchem.2024.32710.

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The synthesis of 1,4-bis((1-phenyl-1H-1,2,3-triazol-4-yl)methyl)-1,4-dihydroquinoxaline-2,3-dione derivatives (6a-l) was accomplished through click chemistry protocol. The synthesized compounds were screened for their in vitro anticancer activity against MCF-7, PC-3 and HeLa cancer cell lines by MTT assay using doxorubicin as standard reference. Compounds 6g (4-cyano), 6l (4-bromo), 6c (4-chloro) and 6i (4-methyl) demonstrated promising percentage growth inhibition against all the three cell lines in comparison to doxorubicin. The determined IC50 value proved their efficacy against all cell li

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Swoboda, Daniel, Jacek E. Nycz, Nataliya Karaush-Karmazin, et al. "Synthesis and Spectroscopic Characterization of Selected Phenothiazines and Phenazines Rationalized Based on DFT Calculation." Molecules 27, no. 21 (2022): 7519. http://dx.doi.org/10.3390/molecules27217519.

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Two unique structures were isolated from the phosphorylation reaction of 10H-phenothiazine. The 5,5-dimethyl-2-(10H-phenothiazin-10-yl)-1,3,2-dioxaphosphinane 2-oxide (2a) illustrates the product of N-phosphorylation of phenothiazine. Moreover, a potential product of 2a instability, a thiophosphoric acid 2b, was successfully isolated and structurally characterized. Molecule 2a, similarly to sulfoxide derivative 3, possesses interesting phosphorescence properties due to the presence of d-pπ bonds. The X-ray, NMR, and DFT computational studies indicate that compound 2a exhibits an anomeric effec

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Xu, Zhen, Bozhen Wang, Lingqian Kong, Jinsheng Zhao, and Yuchang Du. "Synthesis and Characterization of Solution-Processible Donor-Acceptor Electrochromic Conjugated Copolymers Based on Quinoxalino[2′,3′:9,10]phenanthro[4,5-abc]phenazine as the Acceptor Unit." Polymers 15, no. 4 (2023): 940. http://dx.doi.org/10.3390/polym15040940.

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Donor-acceptor (D-A) type conjugated polymers are of high interest in the field of electrochromism. In this study, three novel conjugated copolymers (PBPE–1, PBPE-2 and PBPE-3) based on quinoxalino[2′,3′:9,10]phenanthro[4,5-abc]phenazine (A) as the acceptor unit and 4,8-bis((2-octyldodecyl)oxy)benzo[1,2-b:4,5-b′]dithiophene (D1) and 3,3-didecyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine (ProDOT-decyl2, D2) as the donor units with different donor-to-acceptor ratios were successfully synthesized through Stille coupling polymerization. The polymers were then characterized by cyclic voltammetry (C

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P., Sukanya, and Venkata Ramana Reddy Ch. "Synthesis, characterization, DNA binding, cleavage and antibacterial studies of CoII, NiII, CuII and ZnII complexes of 3-(2-(2-hydroxy-3- methoxybenzylidene)hydrazinyl)quinoxalin-(1H)-one." Journal of India Chemical Society Vol. 95, Feb 2018 (2018): 121–28. https://doi.org/10.5281/zenodo.5638166.

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Jawaharlal Nehru Technological University Hyderabad, Hyderabad-500 085, Telangana, India E-mail : vrr9@yahoo.com <em>Manuscript received 20 December 2017, revised 20 January 2018, accepted 13 February 2018</em> A series of Co<sup>II</sup>, Ni<sup>II</sup>, Cu<sup>II</sup> and Zn<sup>II</sup> complexes of tridentate Schiff base ligand (L), 3-(2-(2-hydroxy- 3-methoxybenzylidene)hydrazinyl)quinoxalin-2(1H)-one (VHQO) have been synthesized and characterized by elemental analysis, IR, UV-Vis, EPR, PXRD, SEM, TGA-DTA, mass, molar conductance and magnetic studies. The ligand (L) formed 1 : 2 complexe

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Eakta, Eakta, Ranjana Aggarwal, and Garima Sumran. "ChemInform Abstract: A Reinvestigation of Reaction of 2-Hydrazino-3-phenylquinoxaline with 1,3-Diketones: Synthesis and Characterization of Regioisomeric 1-(3′-Phenylquinoxalin-2′-yl)-3,5-disubstitutedpyrazoles and 1,2,4-Triazolo[4,3-a]quinoxalines." ChemInform 44, no. 24 (2013): no. http://dx.doi.org/10.1002/chin.201324159.

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Sukanya, Panaganti, and Chittireddy Venkata Ramana Reddy. "Synthesis, characterization and in vitro anticancer, DNA binding and cleavage studies of Mn (II), Co (II), Ni (II) and Cu (II) complexes of Schiff base ligand 3-(2-(1-(1H-benzimidazol-2-yl)ethylidene)hydrazinyl)quinoxalin-2(1H)-one and crystal structure o." Applied Organometallic Chemistry 32, no. 11 (2018): e4526. http://dx.doi.org/10.1002/aoc.4526.

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El-Gaby, Mohamed S. A., Yousry A. Ammar, Mostafa A. Ismail, Ahmed Ragab, and Moustafa S. Abusaif. "Synthesis, characterization, and biological target prediction of novel 1,3-dithiolo[4,5-b]quinoxaline and thiazolo[4,5-b]quinoxaline derivatives." Heterocyclic Communications 29, no. 1 (2023). http://dx.doi.org/10.1515/hc-2022-0170.

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Abstract Quinoxalines are a family of nitrogen-based heterocyclic compounds that have garnered much interest because of their wide range of applications. 2,3-Dichloroquinoxaline is an aromatic molecule that frequently serves as a synthetic intermediate in materials science, pharmaceuticals, and organic chemistry. 1,3-Dithiolo[4,5-b]quinoxaline derivatives 8a–c and thiazolo[4,5-b]quinoxaline derivatives 11a,b were synthesized by the reaction of 2,3-dichloro-6-sulfonyl quinoxaline derivative 5 with 1,3-binucleophiles. Moreover, 1,3-dithiolo[4,5-b]quinoxalin2-ylidene derivatives 8a–c were obtaine

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Musa, Taghreed M., Mahmoud Najim A.Al-jibouri, and Bayader Fadhil Abbas. "Synthesis, Characterization and Thermal Study of Some Transition Metal Complexes Derived from Quinoxaline-2,3-Dione." Ibn AL- Haitham Journal For Pure and Applied Science, April 24, 2018, 209. http://dx.doi.org/10.30526/2017.ihsciconf.1794.

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The present paper describes the synthesis and structural studies of new transition metal complexes of cobalt(II), nickel(II), copper(II) and cadmium(II) with two bi dentate ligands derived from quinoxaline-2,3-dione. The two ligands were fully identified by elemental analyses, FT-IR, NMR and UV-Visible spectra. The metal complexes of Co(II), Ni(II), Cu(II) and Cd(II) were isolated in the solid state after reactions of their metal chlorides with the ligands in 2:1 mole ratio. The isolated solid metal complexes were characterized with the help of elemental analyses, NMR, FT-IR and UV-Visible spe

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Abid, Mohammad, and Amir Azam. "Synthesis, Characterization and Antiamoebic Activity of 1-(Thiazolo[4,5-b]quinoxaline-2-yl)-3-phenyl-2-pyrazoline Derivatives." ChemInform 37, no. 34 (2006). http://dx.doi.org/10.1002/chin.200634158.

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Abdelwahab, Huda E., Mohammed Elhag, and Mohamed M. El Sadek. "Removal of As(V) and Cr(VI) using quinoxaline chitosan schiff base: synthesis, characterization and adsorption mechanism." BMC Chemistry 18, no. 1 (2024). http://dx.doi.org/10.1186/s13065-024-01328-7.

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AbstractElevated Arsenic and Chromium levels in surface and ground waters are a significant health concern in several parts of the world. Chitosan quinoxaline Schiff base (CsQ) and cross-linked chitosan quinoxaline Schiff base (CsQG) were prepared to adsorb both Arsenate [As(V)] and Chromium [Cr(VI)] ions. The thermo-gravimetric analysis (TGA), X-ray diffraction analysis (XRD), and Fourier-transform infrared spectroscopy (FTIR) were used to investigate the prepared Schiff bases (CsQ) and (CsQG). The UV–VIS spectra showed a shift in the wavelength area of the modified polymer, indicating the re

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Afrough, Toktam, Mehdi Bakavoli, Hossein Eshghi, Hamid Beyzaei, and Mohammadreza Moghaddam-Manesh. "Synthesis, Characterization and In Vitro Antibacterial Evaluation of Novel 4-(1-(Pyrimidin-4-yl)Ethyl)-12H-Pyrimido[4′,5′:5,6][1,4]Thiazino[2,3-b]Quinoxaline Derivatives." Polycyclic Aromatic Compounds, July 22, 2019, 1–11. http://dx.doi.org/10.1080/10406638.2019.1614640.

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Abdelwadoud, Fatma K., Gehad S. Gomaa, and Ahmed A. Geies. "Synthesis and characterizations of some new selenolo[2,3‐b]quinoxaline derivatives." Journal of Heterocyclic Chemistry, November 15, 2023. http://dx.doi.org/10.1002/jhet.4754.

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AbstractIn this paper, we present the synthesis of new selenoloquinoxaline derivatives starting from 2‐chloroquinoxaline‐3‐carbonitrile 1. The compound 1 was subjected to a reaction with selenium metal in the presence of NaBH4 as a reducing agent in ethanol, under a nitrogen atmosphere. This reaction resulted in the formation of the sodium salt of 3‐cyanoquinoxaline‐2‐selenolate, which was subsequently reacted with α‐halogenated carbonyl compounds in situ. This reaction produced a series of newly synthesized 3‐aminoselenolo[2,3‐b]quinoxaline‐2‐substituents. Ethyl 3‐aminoselenolo[2,3‐b]quinoxal

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Kharbouch, Otmane, Khadija Dahmani, Saber Issam, et al. "Synthesis and characterization of quinoxalinone-based heterocycles for corrosion inhibition: electrochemical, spectroscopic, and microscopic studies with theoretical analysis." Anti-Corrosion Methods and Materials, March 3, 2025. https://doi.org/10.1108/acmm-07-2024-3043.

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Purpose This study aims to synthesize two organic heterocyclic compounds, (2E,3E)-6-chloro-2,3-dihydrazinylidene-1-methyl-1,2,3,4-tetrahydroquinoxaline (MR1) and (2E,3E)-2,3-dihydrazinylidene-1-methyl-1,2,3,4-tetrahydroquinoxaline (MR2), characterize them using nuclear magnetic resonance spectroscopy (1H-NMR and 13C-NMR) and evaluate their effectiveness as corrosion inhibitors in an acidic environment (15% HCl). Design/methodology/approach The synthesized compounds, MR1 and MR2, were tested for their corrosion inhibition properties using potentiodynamic polarization and electrochemical impedan

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Ali, Ali A., M. M. Elsawy, Nashwa M. Saleh, Ahmed A. El-Henawy, Fatimah Ali M. Al-Zahrani, and H. Abd El-Wahab. "Efficient green synthesis and characterization of bridged nitrogen heterocyclic systems and application on polyester fabric with quinoxaline and isoxazole nuclei." Pigment & Resin Technology, March 13, 2025. https://doi.org/10.1108/prt-10-2024-0109.

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Purpose This study aims to explore a rapid, less expensive, clean and environmentally friendly approach to the synthesis of disperse dyes based on 4-substituted benzenesulfonamide derivatives and evaluate their uses as colorants for dying and printing on polyester fabric. Design/methodology/approach The disperse dyes were created by dissolving solution of the diazonium salt of a 4-substituted benzenesulfonamide derivative 1 reaction with N’-(2-bromobenzylidene)-2-cyanoacetohydrazide in 25 mL of ethanol was added to the diazonium salt. The reaction mixture was then stirred in an ice bath for 2

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Huang, Yan-Ju, Li-Lei Liu, Jun Zhang, and Ya-Ru Pan. "Synthesis and Characterization of Two Functional Complexes Based on 2-Methyldipyrido[3,2-f:2′,3′-h]quinoxaline as Co-catalysts and Their Enhancement on Photocatalytic H2 Production Activity of g-C3N4." Catalysis Letters, February 15, 2023. http://dx.doi.org/10.1007/s10562-023-04295-1.

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