of the dibromobicyclic ketone (4) at 0 °C resulted in the formation of ketone (5); the remarkably rapid [1,5] benzyl shift in this reaction is attributed to formation and rearrangement of ketone (2), a unique example of a molecule with a ring system consisting entirely of fused blocked aromatic rings.
二
溴双环酮(4)在0°C的脱氢
溴化作用导致酮(5)的形成。此反应中[1,5]苄基的快速迁移归因于酮(2)的形成和重排,酮是具有完全由稠合的嵌段芳香环组成的环系统的分子的独特实例。