The reaction of the dienes 1–5 with diphenylketene to give the [2 + 2]-adducts 6–10 and the [4 + 2]-adducts 11–15, respectively, has been found to occur by an ionic mechanism involving the zwitterion 16. The reactions of the dienes 2 and 3 with methylphenylketene (and also cyclohexa-1,3-diene with diphenylketene) proceed in a similar fashion. The enol ether 13 was converted into the polyoxygenated cyclohexane derivatives 33, 35 and 38.
与二苯基酮烯反应的二烯体1-5分别生成[2 + 2]加成物6-10和[4 + 2]加成物11-15,已发现该反应通过一种离子机制进行,涉及双性离子16。二烯体2和3与甲基苯基酮烯(以及
环己烯-1,3与二苯基酮烯)的反应以类似方式进行。醇醚13转化为多氧化的
环己烷衍
生物33、35和38。