o-Nitroaniline Derivatives - 13 reactions of N-(o-nitroaryl)sarcosine esters with bases
摘要:
The title reactions give 1-hydroxy-4-methylquinoxaline-2,3-diones (4) together with a variety of mono- and bi-cyclic by-products All of these may result from a common intermediate, viz. a 1-hydroxy-4-methyl-3,4-dihydro-1H-2,1,4-benzoxadiazine-3-carboxylate ester (18).
A new route to -hydroxyquinoxaline-2,3-diones and some aza-analogues
作者:Michael D. McFarlane、David M. Smith
DOI:10.1016/s0040-4039(01)91374-7
日期:1987.1
Reactions of -(-nitroaryl)sarcosine esters with bases give 1-hydroxy-4-methyl-quinoxaline-2,3-diones as the principal products; the corresponding reactions of -(3-nitro-2-pyridyl)sarcosine esters give 1-hydroxy-4-methylpyrido[2,3-]pyrazine-2,3-diones. The significance of these results, in relation to a general mechanism for nitro-group condensations, is discussed.