In the title compound, C(20)H(20)N(2), the quinoxaline ring adopts a very distorted half-chair conformation [N=C-C=N = 22.7 (2)° for the nominally coplanar atoms] and the cyclo-hexane ring adopts a chair conformation. The quinoxaline and cyclo-hexane rings are cis-fused. The two phenyl rings form a dihedral angle of 63.88 (7)°.

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In the title compound, C(12)H(14)N(2)O(2), the quinoxaline ring system and the C atoms of the methylene and methyl substituents lie on a mirror plane. The crystal packing is stabilized by weak π-π inter-actions [centroid-centroid distance = 3.680 (7) Å].

The title compound, C(9)H(8)N(3)O(+)·Cl(-), was isolated from a liquid culture of streptomyces sp. In the cation, the ring system makes a dihedral angle of 0.2 (2)° with the amide group. The protonation creating the cation occurs at ome of the N atoms in the quinoxaline ring system. In the crystal, the ions are linked through N-H⋯O and N-H⋯Cl hydrogen bonds, forming a two-dimensional network pa...

In the title compound, C(35)H(29)N(3)O, the quinoxaline and indene systems are essentially planar, with maximum deviations of 0.047 (2) and 0.032 (2) Å for C atoms, respectively. The quinoxaline system forms a dihedral angle of 4.75 (3)° with the indene system. The pyrrolizine system is folded. The substituted five-membered ring adopts an envelope conformation. In the other five-membered ring, ...

Aqueous conjugated polymer nanoparticles developed by nanoprecipitation from a quinoxaline–thiophene type with 3 fluorine atoms as potential cancer theranostics for breast cancer.

A series of quinoxaline-based compounds 1–4 have been synthesized by Palladium-Catalyzed cross-coupling reaction and their photophysical properties extensively studied. Compounds show deep blue light emission both in solution (λem ≤ 425 nm, CIEy≤0.03) solid-state. Moreover, 1–3 a non-typical aggregation-induced enhanced (AIEE), which would be effective light-emitting materials. The DFT calculat...

Photostable donor–acceptor–donor fluorophores, which have a central quinoxaline acceptor nucleus, been used in LSCs, obtaining outstanding results for modern building-integrated photovoltaics (BIPV).

2-Methylpyridinium trifluoromethanesulfonate ([2-MPyH]OTf) catalyzed synthesis of 1,5benzodiazepine and quinoxaline derivatives in the reaction of between o-phenylenediamine and ketone (synthesis of 1,5-benzodiazepine derivatives) or 1,2-diketone (synthesis of quinoxaline derivatives) in high yields and short time reaction. The catalyst can be separated from the products by a change in the solv...

The asymmetric unit of the title compound, C(16)H(14)N(2)O, contains three independent mol-ecules. The dihedral angles between the quinoxaline and phenyl planes in the three mol-ecules are 82.58 (8), 85.66 (9) and 85.36 (9)°. The crystal packing is stabilized by C-H⋯O and C-H⋯N hydrogen bonds.