作者:Ulrich Burger、Arlette Delay、François Mazenod
DOI:10.1002/hlca.19740570725
日期:1974.11.6
It has been shown that the reaction of the title ketone with phosphorous pentachloride leads to regiospecific chlorine transfer to the diene moiety of the molecule, leaving the carbonyl function intact. Attempted acetalization with ethylene glycol did not give the dioxolane but rather 1,2,3,4,5-pentamethylcyclopenta-1, 3-diene in quantitative yield. An independent synthesis of this hydrocarbon, previously
已经显示出标题酮与五氯化磷的反应导致区域特异性氯转移到分子的二烯部分,而羰基功能保持完整。尝试用乙二醇缩醛化没有得到二氧戊环,而是定量得到的1,2,3,4,5-五甲基环戊-1,3-二烯。还已经描述了这种烃的独立合成,以前只能通过冗长的多步合成来获得。观察到的全甲基-乙酰基-环戊二烯唯一的正常羰基反应是金属氢化物的还原。