Synthetic Utilization of Polynitroaromatic Compounds. 3. Preparation of Substituted Dibenz[<i>b,f</i>][1,4]oxazepine-11(10<i>H</i>)-ones from 2,4,6-Trinitrobenzoic Acid via Nucleophilic Displacement of Nitro Groups
作者:Alexander V. Samet、Victor N. Marshalkin、Konstantine A. Kislyi、Natalya B. Chernysheva、Yuri A. Strelenko、Victor V. Semenov
DOI:10.1021/jo051425c
日期:2005.11.1
1,3-Dinitrodibenz[b,f][1,4]oxazepin-11(10H)-one, prepared by intramolecular displacement of nitrogroup in N-(2-hydroxyphenyl)-2,4,6-trinitrobenzamide, reacts with O- and S-nucleophiles to yield the products of mono- or bis-substitution of the nitrogroups. The nitrogroup in position 3 is displaced first. This observation is in contrast with earlier results for the nitro-substituted benzoannulated