116059-19-9Relevant academic research and scientific papers
O-Nitroaniline derivatives. Part 14. Cyclisations leading to benzimidazole N-oxides, N-hydroxybenzimidazolones and N-hydroxyquinoxaline-2,3-diones: A mechanistic borderline
Collins Cafiero, Pamela A.,French, Colin S.,McFarlane, Michael D.,Mackie, Raymond K.,Smith, David M.
, p. 1375 - 1384 (2007/10/03)
The base-induced cyclisations of N-(o-nitrophenyl)glycine derivatives (nitriles 9 or esters 13) bearing additional substituents at the other ortho-position are anomalous, resembling those involving N-(o-nitrophenyl)sarcosine analogues. The nitriles are co
A NEW ROUTE TO N-HYDROXYQUINOXALINE-2,3-DIONES AND SOME AZA-ANALOGUES
McFarlane, Michael D.,Smith, David M.
, p. 6363 - 6366 (2007/10/02)
Reactions of N-(o-nitroaryl)sarcosine esters with bases give 1-hydroxy-4-methyl-quinoxaline-2,3-diones as the principal products; the corresponding reactions of N-(3-nitro-2-pyridyl)sarcosine esters give 1-hydroxy-4-methylpyridopyrazine-2,3-diones.The significance of these results, in relation to a general mechanism for nitro-group condensations, is discussed.
