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 nitro group 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 nitro groups. The nitro group in position 3 is displaced first. This observation is in contrast with earlier results for the nitro-substituted benzoannulated
通过分子内置换N-(2-羟基苯基)-2,4,6-三硝基苯甲酰胺中的硝基制备的1,3-二硝基二苯并[ b,f ] [1,4]恶唑啉-11(10 H)-1反应用O-和S-亲核试剂产生硝基的单或双取代产物。3位的硝基首先被取代。该观察结果与硝基取代的苯并环化的五元杂环的早期结果相反。在反应性的这种差异可能是由于增加的位阻围在benzoannulated七元杂环的情况下,硝基基团置换。硝基取代的苯并[ b,f的N-烷基化] [1,4] oxazepin-11(10 H)-ones产生已知抗抑郁药Sintamil的类似物。产品的结构通过NOE实验和替代合成得到证实。