2,2,01,5]undec-8-enes which are probably formed through a competing sequence involving the intermediate 1-pent-4-enylcyclohexa-1,3-diene; ketones corresponding in their skeletal structure to the tricyclic hydrocarbons have been obtained by heating α-pyrone with hepta-1,6-dien-3-one.
将5-戊-4-烯基环己-1,3-二烯在210°加热,主要生成
三环[5,3,1,0 3,8 ]
十一烷基-9-烯,以及少量的差向异构体
三环[5] ,2,2,0 1,5 ]其通过竞争序列可能形成十一-8-烯类涉及中间体1-戊-4- enylcyclohexa -1,3-二烯; 通过将
α-吡喃酮与庚-1,6-dien-3-one加热获得了骨架结构上与三
环烃相对应的酮。