Results 51 to 60 of about 24,157 (222)

An Efficient Protocol for the Synthesis of Quinoxaline Derivatives at Room Temperature Using Recyclable Alumina-Supported Heteropolyoxometalates

The Scientific World Journal, 2012
We report a suitable quinoxaline synthesis using molybdophosphovanadates supported on commercial alumina cylinders as catalysts. These catalysts were prepared by incipient wetness impregnation.
Diego M. Ruiz, Juan C. Autino, Nancy Quaranta, Patricia G. Vázquez, Gustavo P. Romanelli   +4 more
doaj   +1 more source

3-{2-[(3-{(E)-2-[4-(Dimethylamino)phenyl]ethenyl}quinoxalin-2-yl)oxy]ethyl}-1,3-oxazolidin-2-one monohydrate

Acta Crystallographica Section E, 2012
In the title compound, C23H24N4O3·H2O, the 1,3-oxazoline ring is nearly planar [maximum deviation = 0.059 (2) Å] and its mean plane is twisted by 30.12 (8)° with respect to the quinoxaline fused ...
Youssef Ramli, Hafid Zouihri, El Mokhtar Essassi, Seik Weng Ng   +3 more
doaj   +1 more source

[EMIM]AlCl4-ionic liquid catalyzed mechanochemically assisted green approach towards the synthesis of quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives

Results in Chemistry
In the presented work, a convenient and effective methodology for the synthesis of quinoxaline, 6H-indolo[2,3-b]quinoxaline and benzimidazole derivatives has been developed.
Shafaque M. Shaikh, Gulafshan M. Ansari, Zobia Z. Karbari, Aditi A. Babre, Vikas V. Borge, Vikas M. Bangade, Damodara N. Kommi, Bhushan B. Popatkar   +7 more
doaj   +1 more source

Quinoxaline derivatives as attractive electron-transporting materials

Beilstein Journal of Organic Chemistry, 2023
This review article provides a comprehensive overview of recent advancements in electron transport materials derived from quinoxaline, along with their applications in various electronic devices. We focus on their utilization in organic solar cells (OSCs)
Zeeshan Abid, Liaqat Ali, Sughra Gulzar, Faiza Wahad, Raja Shahid Ashraf, Christian B. Nielsen   +5 more
doaj   +1 more source

Synthesis of Copolymers Based on Thiophene, Methoxythiophene, Propylenedioxythiophene and Quinoxaline Units and their Optical and Electrochemical Properties

International Journal of Electrochemical Science, 2021
Three D-A-type conjugated copolymers namely PTQET-1, PTQET-2 and PTQET-3 were designed employing quinoxaline units as the acceptor, thiophene, methoxythiophene and 3,4-propylenedioxythiophene (ProDOT) units as the donor.
Dehao Kong, Shengyong Liu, Jinsheng Zhao, Yan Zhang   +3 more
doaj   +1 more source

1,4-Di-N-oxide quinoxaline-2-carboxamide: Cyclic voltammetry and relationship between electrochemical behavior, structure and anti-tuberculosis activity [PDF]

, 2011
To gain insight into the mechanism of action, the redox properties of 37 quinoxaline-2-carboxamide 1,4-di-N-oxides with varying degrees of anti-tuberculosis activity were studied in dimethylformamide (DMF) using cyclic voltammetry and first derivative ...
Aldana, I. (Ignacio), Ancizu, S. (Saioa), Crawford, P.W. (Philip W.), Gouravaram, S. (S.), Macharam, A. (Abinav), Monge, A. (Antonio), Moreno-de-Viguri, E. (Elsa), Pérez-Silanes, S. (Silvia), Torres, E. (Enrique)   +8 more
core   +1 more source

Hole‐Selective Self‐Assembled Monolayers Overlaid on NiOx or PEDOT:PSS for Tin‐Based Perovskite Solar Cells – An Overview of Recent Characterization Methods

Chemistry – A European Journal, EarlyView.
Successfully applying self‐assembled monolayers with hole‐selectivity for lead‐free tin perovskite solar cells requires judicious investigation with appropriately powerful characterization methods, in addition to efforts in the development of new materials and processing.
Donghoon Song, Seung Wook Shin, Hui‐Ping Wu, Eric Wei‐Guang Diau   +3 more
wiley   +1 more source

Synthesis of pyrimido[1,6-a]quinoxalines via intermolecular trapping of thermally generated acyl(quinoxalin-2-yl)ketenes by Schiff bases

Beilstein Journal of Organic Chemistry, 2018
Acyl(quinoxalin-2-yl)ketenes generated by thermal decarbonylation of 3-acylpyrrolo[1,2-a]quinoxaline-1,2,4(5H)-triones react regioselectively with Schiff bases under solvent-free conditions to form pyrimido[1,6-a]quinoxaline derivatives in good yields.
Svetlana O. Kasatkina, Ekaterina E. Stepanova, Maksim V. Dmitriev, Ivan G. Mokrushin, Andrey N. Maslivets   +4 more
doaj   +1 more source

Evaluation of Synthetic 2,4-Disubstituted-benzo[g]quinoxaline Derivatives as Potential Anticancer Agents

Pharmaceuticals, 2021
A new series of 2,4-disubstituted benzo[g]quinoxaline molecules have been synthesized, using naphthalene-2,3-diamine and 1,4-dibromonaphthalene-2,3-diamine as the key starting materials. The structures of the new compounds were confirmed by spectral data
Islam Zaki, Sara A. Abu El-ata, Eman Fayad, Ola A. Abu Ali, Ali H. Abu Almaaty, Ahmed S. Saad   +5 more
doaj   +1 more source

Rechargeable organic–air redox flow batteries [PDF]

, 2018
A rechargeable organic–air flow battery based on aqueous electrolytes is proposed and tests are conducted in a divided cell with a three-electrode configuration. Quinoxaline is used as the negative redox couple due to its low electrode potential of c.a. −
Aili, D., Leung, Puiki, Rodchanarowan, A., Shah, Akeel A., Xu, Q.   +4 more
core   +1 more source