from carboxylic acid has been accomplished whereby the chemical scope of the tricyclodecadienone system as a synthetic equivalent of cyclopentadienone has been expanded. Bridgehead bromide gives upon treatment with base access to norbornene annulated cyclopentadienone which rapidly undergoes either regioselective nucleophilic addition or Diels-Alder cyclization depending on the applied reaction conditions
从
羧酸开始有效合成6-官能化的内-
三环[5.2.1.0 2,6 ] deca-4,8-dien-3-ones ,由此
三环癸二烯酮系统的
化学范围为
环戊二烯酮的合成等价物已经扩展了。桥头
溴化物可以通过
降冰片烯环化的
环戊二烯酮的碱处理而获得,根据所应用的反应条件,该
环戊二烯酮可以快速进行区域选择性亲核加成或Diels-Alder环化。