The enone moiety of 3-bromo-7-(bromomethyl)tetracyclo[5.3.1.02,6.04,8]undec-10(12)-ene-9,11-dione undergoes facile hetero-Diels-Alder reaction with pentafulvenes leading to novel cage systems with pyran moiety
3-溴-7-(
溴甲基)四环[5.3.1.02,6.04,8]十一碳-10(12)-烯-9,11-二酮的烯酮部分与五
氟乙烯发生易异构化的Diels-Alder反应,形成具有
吡喃部分的全新笼状系统。