system is described. At low temperatures, the ratio of syn- and anti- N-chloroamines formed under conditions of kinetic control can be determined; this ratio is shown to be influenced substantially by variation in the electronic character of the aryl ring. At higher temperatures, inversion at nitrogen leads to different (thermodynamic) invertomer ratios which also vary as a function of substitution
描述了基于1,4-二
氢-1,4-亚
氨基
萘(7-
氮杂
苯并降
冰片二
烯)环体系的一系列仲胺的
氯化反应。在低温下,可以确定在动力学控制条件下形成的正-N-
氯胺和反-N-
氯胺的比例。该比率显示出基本上受芳环电子特性变化的影响。在较高的温度下,
氮的转化导致不同的(热力学)转化体比率,该比率也随取代作用而变化。芳基环和双环骨架中的取代基也会影响
氮的转化阻挡层。