Results 11 to 20 of about 24,157 (222)
Quinoxaline-2-carbonitrile [PDF]
Acta Crystallographica Section E Structure Reports Online, 2009 In the title compound, C9H5N3, the quinoxaline ring is essentially planar, with a maximum deviation of 0.012 (1) Å. Short intermolecular distances between the centroids of the 2,3-dihydropyrazine and benzene rings [3.6490 (5) Å] indicate the existence of π⋯π interactions.
Hoong‐Kun Fun +4 more
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2-(4-Chloroanilino)quinoxaline [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 There are two mol-ecules in the asymmetric unit of the title compound, C(14)H(10)ClN(3), with dihedral angles of 5.11 (10) and 13.61 (10)° between the aromatic ring systems. In the crystal structure, mol-ecules are linked by N-H⋯N hydrogen bonds, resulting in chains propagating in [010].
Idris, A. +4 more
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Recent Updates on the Synthesis of Bioactive Quinoxaline-Containing Sulfonamides
Applied Sciences, 2021 Quinoxaline is a privileged pharmacophore that has broad-spectrum applications in the fields of medicine, pharmacology and pharmaceutics. Similarly, the sulfonamide moiety is of considerable interest in medicinal chemistry, as it exhibits a wide range of
Ali Irfan +7 more
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Heterocyclic Communications, 2023 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 ...
El-Gaby Mohamed S. A. +4 more
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2,3-Diethylbenzo[g]quinoxaline [PDF]
IUCrData, 2020 The title compound, C16H16N2, was synthesized by dispersing 3,4-hexanedione in a methanol–water solution containing the acid catalyst NH4HF2, then adding 1,2-diaminonaphthalene. The fused-ring system of the title compound is close to planar (r.m.s. deviation = 0.028 Å); one of the pendant methyl C atoms lies close to the ring plane [deviation = 0.071 ...
Guy Crundwell, Ashley Leeds
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Synthesis, Characterization and Protonation Behavior of Quinoxaline-Fused Porphycenes
Molecules, 2017 9,10-Quinoxaline-fused porphycenes 1a-H2 and 1b-H2 were synthesized by intramolecular McMurry coupling. As a result of the annulation of the quinoxaline moiety on the porphycene skeleton, 1a-H2 and 1b-H2 display absorption and fluorescence in the near ...
Daiki Kuzuhara +5 more
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2-(3-Nitrophenoxy)quinoxaline [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the title mol-ecule, C(14)H(9)N(3)O(3), the dihedral angle between the quinoxaline and benzene rings is 77.13 (9)°. The mol-ecule is twisted about the ether-benzene O-C bond, with a C-O-C-C torsion angle of -102.8 (2)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers in the ab plane, with one nitro O atom accepting two ...
Hassan, N.D. +5 more
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Molecules, 2014 We report the synthesis and antimalarial activities of eighteen quinoxaline and quinoxaline 1,4-di-N-oxide derivatives, eight of which are completely novel. Compounds 1a and 2a were the most active against Plasmodium falciparum strains.
Ana Gil +7 more
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An alternative method to access diverse N,N′-diquaternised-3,3′-biquinoxalinium “biquinoxen” dications [PDF]
, 2017 An alternative synthetic route for the design of N,N′-diquaternised-3,3′-biquinoxalinium “biquinoxen” dications is reported, involving oxidative radical coupling of dithionite reduced quinoxaline quaternary salts.
Leblanc, Nicolas +2 more
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An electron-deficient triosmium cluster containing the thianthrene ligand: Synthesis, structure and reactivity of [Os₃(CO)₉(μ3-η2-C₁₂H₇S₂)(μ-H)] [PDF]
, 2008 Reaction of [Os₃(CO)₁₀(CH₃CN)₂] with thianthrene at 80 °C leads to the nonacarbonyl dihydride compound [Os₃(CO)₉(μ-3,4-η²-C₁₂H₆S₂)(μ-H)₂] (1) and the 46-electron monohydride compound [Os₃(CO)₉(μ₃-η²-C₁₂H₇S₂)(μ-H)] (2).
Hassan, Mohammad R. +7 more
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