is hardly affected by the high exothermicity of the overall reaction (-93.4 kcal/mol). Oxidation of amine 3 also afforded a cyclic azimine 5 that underwent photolysis to yield a highly strained triaziridine 9 plus an unusual triazane 10, whose structures were elucidated by detailed NMR studies. On standing at ambient temperature, 9 reverted to 5 with a half-life of about an hour.
已通过IF(5)氧化β-偶氮胺3制备了含有三个偶氮基团(1)的脂肪族偶氮化合物。在155℃以上研究了这种邻位三偶氮烷的热分解动力学,其速率常数仅比其快5.5倍。简单模型就是
偶氮叔丁烷 由于逐步进行热分解以形成七个稳定的产物,因此该速率几乎不受整个反应的高放热度(-93.4 kcal / mol)的影响。胺3的氧化还提供了一种环状
叠氮化物5,将其进行光解以产生高张力的三
氮丙啶9和一种不寻常的三氮烷10,其结构已通过详细的NMR研究得以阐明。在环境温度下放置时,其9还原为5,半衰期约为一个小时。