Results 41 to 50 of about 14,380 (267)
Molecules, 2021 Quinoxalines, a class of N-heterocyclic compounds, are important biological agents, and a significant amount of research activity has been directed towards this class.
Hena Khatoon, Emilia Abdulmalek
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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 +3 more
openaire +3 more sources
Thermochemical and Theoretical Studies of 2-Hydroxyquinoxaline, 2,3-Dihydroxyquinoxaline, and 2-Hydroxy-3-methylquinoxaline [PDF]
, 2000 The standard (p° = 0.1 MPa) molar enthalpies of formation for crystalline 2-hydroxyquinoxaline, 2,3-dihydroxyquinoxaline, and 2-hydroxy-3-methylquinoxaline were derived from the standard molar enthalpies of combustion, in oxygen, at T = 298.15 K ...
Matos, M. A. R. +4 more
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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-(
Ahmed T. A. Boraei +3 more
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Condensation of 4-hydroxy-2-thiazolines with 1,2-phenylenediamine as a novel effective route to thiazolo[3,4-a]quinoxalines [PDF]
, 2004 Thiazolo[3,4-a]quinoxalin-4-ones were prepared in two steps starting from methyl phenylchloropyruvate using a new strategy for the construction of the ring system. A key step in this new method involves the reaction of 4-hydroxytetrahydrothiazoles with 1,
Gubaidullin, Aidar T +4 more
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Advanced Functional Materials, EarlyView.Phosphorescent OLEDs suffer from efficiency roll‐off due to triplet‐polaron quenching (TPQ). This study demonstrates for a large set of host‐guest combinations a spectroelectrochemical method to measure the absorption of charged molecules, enabling determining TPQ Förster radii (2.5–4 nm) from the spectral overlap.
Stan E. A. Jaspars +5 more
wiley +1 more source
INVESTIGATION DICARBONYL COMPOUNDS GENERATED FROM THE MAILLARD REACTIONS OF METHIONINE WITH REDUCING SUGARS TO ENFOLD OFF FLAVOR IN GOAT’S MILK [PDF]
, 2016 Population of goat in Indonesia remains low and stagnant (about 1.2 % per year). In the other hand, Indonesia is a tropical country, which is suite for the goat’s growth. One of strong reason is low in goat-based product’s demand since “goaty” flavor
AL-BAARRI, Ahmad Nimatullah +1 more
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Advanced Functional Materials, EarlyView.The side‐chain configuration in the bay region of C‐shaped ortho‐benzodipyrrole‐based non‐fullerene acceptors plays a crucial role in their self‐assembly, single‐crystal structures, and optoelectronic properties. The closely correlated molecular structure and performance underscore the importance of minimizing A–A self‐aggregation and enhancing D–A ...
Yung‐Jing Xue +18 more
wiley +1 more source
Molecules, 2011 As reported in our previous papers, a series of quinoxaline-2-carboxamide 1,4-di-N-oxide derivatives were synthesized and studied as anti-tuberculosis agents. Here, the capability of the shake-flask method was studied and the retention time (expressed as
James A. Platts +7 more
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Antioxidant Activity and Oxidation Products of 1,2,3,4- Tetrahydroquinoxalines in Peroxyl Radical Scavenging Reactions, Part I [PDF]
, 2005 This paper studies the antioxidant activity of 1,2,3,4-tetrahydroquinolines, 3,4-dihydro-2H-benzo[1,4]thiazines and 1,2,3,4-tetrahydroquinoxalines in the inhibition of the peroxidation of tetralin induced by an azo initiator.
Nishiyama Tomohiro +5 more
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