Initiated, tert-butyl hydroperoxide-loaded, low-temperature autoxidation of alkenes: a chemoselective synthesis of allylic hydroperoxides, allowing analysis of the regioselectivity of hydrogen atom abstraction from some unsymmetrically substituted substrates
作者:John L. Courtneidge、Melanie Bush
DOI:10.1039/p19920001531
日期:——
A method for the preparation of allylic hydroperoxides is introduced: the method involves the rapid, low-temperature, initiated autoxidation of an alkene (in these instances 1-methylcyclohexene and the isomeric 4-methyloct-4-enes) in the presence of tert-butyl hydroperoxide. The success of the method relies upon the selectivity of hydrogen atom abstraction from the substrate by the chain-carrying tert-butylperoxyl
引入一种烯丙基氢过氧化物的制备方法:该方法包括在存在的快速,低温,烯烃的发起自动氧化(在这些情况下1-甲基环己烯和异构的4-甲基辛-4-烯类)叔-丁基过氧化氢。该方法的成功取决于携带链的叔丁基过氧自由基从底物中提取氢原子的选择性,这是根据形成最稳定的中间烯丙基自由基的偏好以及降低的链终止速率而决定的。这些相同的部首。该方法与Bolland法则的预测大致相符地给出了对进攻的区域选择性,并且对于烯丙基氢过氧化物的形成具有足够高的化学选择性,从而能够以良好的产率容易地分离这些产物。