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Synthesis of Quinoxaline Analogues [PDF]

Synthesis, 2011
AbstractA straightforward synthesis of polycyclic title compounds is achieved by treatment of cyclic ketones with NBS followed by a direct one‐pot coupling with 1,2‐diaminoarenes.
Ru-Ting Hsu, Meng-Yang Chang, Tzu-Lin Yen, Tein-Wei Lee   +3 more
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ChemInform Abstract: Pyrrolo[1,2‐a]quinoxalines Based on Quinoxalines

ChemInform, 2011
AbstractReview: 65 refs.
A. A. Kalinin, V. A. Mamedov
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NCS-promoted thiocyanation and selenocyanation of pyrrolo[1,2-a]quinoxalines.

Organic and biomolecular chemistry, 2020
An efficient NCS-promoted thiocyanation of pyrrolo[1,2-a]quinoxalines with NH4SCN or KSCN is described. A series of diverse 1-thiocyanatopyrrolo[1,2-a]quinoxalines were obtained in good yields with excellent functional group tolerance.
Zhen Yang, Jing-Dong He, Yueting Wei, Weiwei Li, Ping Liu, Jixing Zhao, Yueting Wei   +6 more
semanticscholar   +1 more source

Nickel-catalysed dehydrogenative coupling of aromatic diamines with alcohols: selective synthesis of substituted benzimidazoles and quinoxalines.

Chemical Communications, 2019
The first nickel-catalysed dehydrogenative coupling of primary alcohols and ethylene glycol with aromatic diamines for selective synthesis of mono- and di-substituted benzimidazoles and quinoxalines is reported.
Atanu Bera, Motahar Sk, Khushboo Singh, D. Banerjee   +3 more
semanticscholar   +1 more source

Quinoxalines Potential to Target Pathologies

Current Medicinal Chemistry, 2015
The study of quinoxalines has increased immeasurably during the last two decades, due firstly to their relatively simple chemical synthesis, which has generated a vast variety of compounds with diverse structural modifications, and secondly, to the wide therapeutic potential and biological activities exhibited by this family of compounds.
Antonio Guirado, Antonio J. Ruiz-Alcaraz, María Tristán-Manzano, Pilar García-Peñarrubia, Jesus Galvez, María Martínez-Esparza   +5 more
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Phosphorus Radical-Initiated Cascade Reaction To Access 2-Phosphoryl-Substituted Quinoxalines.

Journal of Organic Chemistry, 2018
An effective radical cascade cyclization strategy was developed, by which a wide range of 2-phosphoryl-substituted quinoxalines were prepared in one pot via reaction of ortho-diisocyanoarenes with diarylphosphine oxides in the presence of AgNO3 under ...
Yan Liu, Xiaolan Chen, Fan-Lin Zeng, K. Sun, Chen Qu, Lulu Fan, Ziwei An, Rui Li, Chunfeng Jing, Shengkai Wei, L. Qu, Bing Yu, Yuanqiang Sun, Yufen Zhao   +13 more
semanticscholar   +1 more source

C‐N Bond Formation Catalyzed by Ruthenium Nanoparticles Supported on N‐Doped Carbon via Acceptorless Dehydrogenation to Secondary Amines, Imines, Benzimidazoles and Quinoxalines

ChemCatChem, 2018
Ruthenium nanoparticles (NPs) supported on N‐doped carbon (Ru/N−C) were prepared by the pyrolysis of cis‐Ru(phen)2Cl2 loaded onto carbon powder (VULCAN XC72R) at 800 °C.
Binshan Guo, Hong‐Xi Li, Shi-qi Zhang, D. Young, J. Lang   +4 more
semanticscholar   +1 more source

Photochemical hydroxylation of quinoxalines

Recueil des Travaux Chimiques des Pays-Bas, 1976
AbstractIrradiation of quinoxaline (1) in acidic aqueous solution under anaerobic conditions leads to the formation of 5‐hydroxyquinoxaline (4) and the 1,4‐dihydroquinoxaline radical cation (5). The radical cation (5) was characterized by ESR spectroscopy.Under aerobic conditions 5‐hydroxyquinoxaline (4) is the only irradiation product formed.
H. C. A. van Beek, J. Verbeek, W. Berends   +2 more
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Visible-light-induced radical cascade cyclization of oxime esters and aryl isonitriles: synthesis of cyclopenta[b]quinoxalines.

Chemical Communications, 2019
A visible-light-induced radical cascade cyclization of aryl isonitriles and cyclobutanone oxime esters for the synthesis of cyclopenta[b]quinoxalines has been accomplished for the first time.
Yao-fen Yuan, Wuheng Dong, Xiaoshuang Gao, Xiaomin Xie, Zhaoguo Zhang   +4 more
semanticscholar   +1 more source

Synthesis of condensed quinoxalines

Journal of Heterocyclic Chemistry, 1991
AbstractA novel efficient synthesis of fluorescent, fused quinoxalines was achieved. 6‐Triazolylthiazolo[4,5‐b]quinoxalines were synthesized by the diazotisation of 6‐amino‐2‐methylthiazolo[4,5‐b]quinoxaline and coupling with selected aromatic amines followed by air oxidation.
Dinesh W. Rangnekar, R. W. Sabnis
openaire   +3 more sources