Nasielski, J. et al. published their research in Tetrahedron in 1989 | CAS: 5448-43-1

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxaline is isomeric with other naphthyridines including quinazoline, phthalazine and cinnoline. Quinoxaline-1,4-di-N-oxide derivatives have shown to improve the biological results and are endowed with anti-viral, anti-cancer, anti-bacterial, and anti-protozoal activities with application in many other therapeutic areas.SDS of cas: 5448-43-1

An unexpected ring-opening in the Reissert reaction on 2,3-diphenylquinoxaline N-oxide was written by Nasielski, J.;Heilporn, S.;Nasielski-Hinkens, R.;Tinant, B.;Declercq, J. P.. And the article was included in Tetrahedron in 1989.SDS of cas: 5448-43-1 This article mentions the following:

When quinoxaline-N-oxide is reacted with KCN and BzCl in H2O or MeOH; the products are 2-, 5- and 6-chloroquinoxaline and small amounts of 2-cyanoquinoxaline. Using three equivalent of Me3SiCN instead of KCN, and CH2Cl2 as the solvent, leads to a 72% yield of 2-cyanoquinoxaline. The reaction of Me3SiCN and BzCl with 2,3-diphenylquinoxaline-N-oxide leads to 2-Bz2NC6H4N:CPhCN (I). The structure of I is based on spectroscopic data and on an X-ray crystallog. anal. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1SDS of cas: 5448-43-1).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxaline is isomeric with other naphthyridines including quinazoline, phthalazine and cinnoline. Quinoxaline-1,4-di-N-oxide derivatives have shown to improve the biological results and are endowed with anti-viral, anti-cancer, anti-bacterial, and anti-protozoal activities with application in many other therapeutic areas.SDS of cas: 5448-43-1

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider