Yin Du-lin
2007
Citations
0
Influential Citations
0
Citations
Journal
Chemical Reagents
Abstract
7-Nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylic acid and 8-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylic acid were prepared from 4-hydroxy-3-nitrobenzoic acid via esterification,etherification,reductive cyclization,nitration and hydrolysis,and their structures were confirmed by IR,1HNMR,LC/MS spectra and elemental analysis.