The S<sub>N</sub>Ar Reaction of 2,3,5,6-Tetrachloronitrobenzene with Diamines under High Pressure: Formation of Cyclization Products
作者:Toshikazu Ibata、Xin-Zhuo Zou、Tetsuo Demura
DOI:10.1246/bcsj.68.3227
日期:1995.11
The reaction of 2,3,5,6-tetrachloronitrobenzene with ethylenediamine under high pressure gave mainly a 1 : 1-product and a bridged 2 : 1-product by the substitution of a nitro group and/or an o-chlorine atom. The ratio of the products varied depending upon the amount of amine used. Other diamines, such as 1,4-butanediamine cis-and trans-1,2-cyclohexanediamines, m-xylylenediamine, and o-phenylenediamine
2,3,5,6-四氯硝基苯与乙二胺在高压下反应主要得到1:1-产物和通过硝基和/或邻氯原子取代的桥连2:1-产物。产物的比例取决于所用胺的量。其他二胺,例如 1,4-丁二胺顺式和反式 1,2-环己二胺、间苯二甲胺和邻苯二胺,也得到了类似的结果。另一方面,N,N'-二甲基乙二胺和N,N'-二甲基-1,3-丙二胺通过邻氯原子和硝基被二胺分子的两个甲氨基连续取代得到环化产物. N-甲基乙二胺通过用伯氨基取代硝基和环状 1 得到 1 : 1 的产物: