The title compound, C 16 H 6 Br 2 Cl 2 N 2 S 2 , was synthesized from the reaction of equimolar amounts of 1,2-diamino-4,5dichlorobenzene and 1,2-bis(5-bromothien-2yl)ethanedione. The crystal structure was determined at 100 K.
7,8-Dichloro-2,3-diphenylquinoxaline
✍ Scribed by Gibson, Ricky Joseph Paul ;Kass, Jorden Paul ;Zambrano, Cesar H. ;Fronczek, Frank R. ;Dueno, Eric Efrain
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 149 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, C~20~H~12~Cl~2~N~2~, was synthesized from the reaction of equimolar amounts of 4,5-dichlorobenzene-1,2-diamine and benzil in acetonitrile, utilizing molecular iodine as the catalyst. The crystal structure was determined at 110 K. The dihedral angle between the two phenyl rings is 57.0 (1)°.
📜 SIMILAR VOLUMES
In the structure of the title compound, C 12 H 10 Cl 2 N 2 , the cyclohexene ring adopts a half-chair conformation.
The title compound, C 30 H 18 N 8 Á2H 2 O, is a solvate of 2,3,7,8tetra(pyridin-2-yl)pyrazino[2,3-g]quinoxaline and, like the latter, is crystallographically centrosymmetric. The pyrazine ring makes dihedral angles of 54.95 (6) and 28.09 (6) with the two independent pyridine rings. The two pyridine
Single-crystal X-ray study T = 170 K Mean '(C±C) = 0.003 A Ê R factor = 0.035 wR factor = 0.081 Data-to-parameter ratio = 7.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The novel regioselective substitution of 2,3-dichloro-6-amino-quinoxaline is described. A range of nucleophiles were used to provide 2,3-disubstituted-6-aminoquinoxalines with complementary regiochemistry to that obtainable using published methodology.