4-(1-hydroperoxy-1-methylethyl)-1,3-cyclopentadienyl methyl ketone: its formation from α-terpineol and behaviour as a dimethylfulvene epoxide.
作者:Alan F. Thomas、Celia Perret
DOI:10.1016/s0040-4020(01)87395-6
日期:1986.1
Ozonolysis of α-terpineol () then steam distillation in presence of acid gives the known 4-isopropylidenecyclopentenyl methyl ketone (). This is oxidized in air to 4-(1-hydroperoxy-1-methylethyl)-1,3-cydopentadienyl methyl ketone (), a compound frequently reacting as if it were one of the elusive dimethylfulvene epoxides. It is converted by silica gel to two dimers (, ) of 2-acetyl-6,6-dimethylfulvene
将α-萜品醇进行臭氧分解,然后在酸的存在下进行水蒸气蒸馏,得到已知的4-异亚丙基环戊烯基甲基酮。在空气中将其氧化为4-(1-氢过氧-1-甲基乙基)-1,3-环戊二烯基甲基酮(),该化合物频繁反应,就好像是难以捉摸的二甲基富勒烯环氧化物中的一种。它是由硅胶转化为二聚体(,2-乙酰基-6,6-二甲基富环氧化物)( )。由多发生二聚体催化还原外添加氢到共轭双键,和热解所述二聚体的产率的4-乙酰基-6,6-二dimethylcyclohexa-2,4-二烯酮()。与三苯膦一起,氢过氧化物()生成两个[6 + 4]二聚体的2-乙酰基-6,6-二甲基富勒烯()。这是首次报道分离出富勒烯的[6 + 4]二聚体。氢过氧化物()加入重氮甲烷,得到不稳定的吡唑啉();该吡唑啉损失氮以产生单个异构体XXX。5-乙酰基-3',3'-二甲基双环[3.1.0]己-3-烯-2-螺-2'-环氧乙烷()。后者的催化氢化涉及环氧化物的开环。