Results 31 to 40 of about 29,559 (250)

7,8-Dimethyl-11H-indeno[1,2-b]quinoxalin-11-one

IUCrData, 2021
In the title compound, C17H12N2O, the mean planes of the indene ring and quinoxaline system (r.m.s. deviations = 0.0131 and 0.0082 Å) are approximately parallel to one another, making a dihedral angle of 1.2 (5)°.
Lin Chen, Jin Hu, Hong-Shun Sun
doaj   +1 more source

Aminoquinoxaline-Based Dual Colorimetric and Fluorescent Sensors for pH Measurement in Aqueous Media

Chemosensors, 2022
This research is focused on the development of pH indicators based on the quinoxaline signaling group for acidic aqueous solutions (pH 1–5). A push–pull quinoxaline QC1 in which two electron-donating (3-aminopropyl)amino substituents are attached to ...
Elizaveta V. Ermakova, Andrey V. Cheprakov, Alla Bessmertnykh-Lemeune   +2 more
doaj   +1 more source

Chemistry, Synthesis, and Structure Activity Relationship of Anticancer Quinoxalines

Chemistry, 2023
Quinoxaline is a fused heterocycle system of a benzene ring and pyrazine ring. It has earned considerable attention due to its importance in the field of medicinal chemistry.
Mohamed F. Zayed
doaj   +1 more source

Quinoxaline:Z′ = 1 form [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
A new Z' = 1 crystal structure of quinoxaline (or 1,4-diaza-naphthalene), C(8)H(6)N(2), with one-fifth the volume of the earlier known Z' = 5 structure was obtained by means of an in situ cryocrystallization technique.
Ranganathan, Sathishkumar, Mahapatra, Sudarshan, Thakur, Tejender S, Desiraju, Gautam R   +3 more
openaire   +2 more sources

3-Methyl-1-(prop-2-en-1-yl)quinoxalin-2(1H)-one

Acta Crystallographica Section E, 2010
In the molecule of the title compound, C12H12N2O, the quinoxaline ring is planar with an r.m.s. deviation of 0.007 (15) Å. The dihedral angle between the quinoxaline and propenyl planes is 82.1 (2)°.
Youssef Ramli, Rachid Slimani, Hafid Zouihri, Saïd Lazar, E. M. Essassi   +4 more
doaj   +1 more source

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

Coatings, 2020
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.
A. Chaouiki, M. Chafiq, M. Rbaa, H. Lgaz, R. Salghi, B. Lakhrissi, I. Ali, S. Masroor, Y. Cho   +8 more
semanticscholar   +1 more source

Mft1, identified from a genome-wide screen of the yeast haploid mutants, mediates cell cycle arrest to counteract quinoxaline-induced toxicity

Frontiers in Genetics
Quinoxaline is a heterocyclic compound with a two-membered ring structure that undergoes redox cycling to produce toxic free radicals. It has antiviral, antibacterial, antifungal, and antitumor activities.
Abdallah Alhaj Sulaiman, Dana E. Al-Ansari, Dana E. Al-Ansari, Reem Ali, Mustapha Aouida, Dindial Ramotar   +5 more
doaj   +1 more source

Synthesis of a New Series of Nitrogen/Sulfur Heterocycles by Linking Four Rings: Indole; 1,2,4-Triazole; Pyridazine; and Quinoxaline

Molecules, 2020
A new series of nitrogen and sulfur heterocyclic systems were efficiently synthesized by linking the following four rings: indole; 1,2,4-triazole; pyridazine; and quinoxaline hybrids. The strength of the acid that catalyzes the condensation of 4-amino-5-(
A. Boraei, Ahmed A. Sarhan, S. Yousuf, A. Barakat   +3 more
semanticscholar   +1 more source

Poly[(μ-2,3-diethyl-7,8-dimethylquinoxaline-κ2N:N)(2,3-diethyl-7,8-dimethylquinoxaline-κN)-μ-nitrato-κ2O:O′-nitrato-κ2O,O′-disilver(I)]

IUCrData
The structure of the title compound, [C14H18N2)2Ag2](NO3)2, contains subtle differences in ligand, metal, and counter-anion coordination. One quinoxaline ligand uses one of its quinoxaline N atoms to bond to one silver cation. That silver cation is bound
Guy Crundwell, Ashley Leeds
doaj   +1 more source

A quinoxaline derivative as a potent chemotherapeutic agent, alone or in combination with benznidazole, against Trypanosoma cruzi. [PDF]

PLoS ONE, 2014
BackgroundChagas' disease is a condition caused by the protozoan Trypanosoma cruzi that affects millions of people, mainly in Latin America where it is considered endemic.
Jean Henrique da Silva Rodrigues, Tânia Ueda-Nakamura, Arlene Gonçalves Corrêa, Diego Pereira Sangi, Celso Vataru Nakamura   +4 more
doaj   +1 more source