作者:Kazuhiko Mizuno、Nobuhiro Kamiyama、Nobuyuki Ichinose、Yoshio Otsuji
DOI:10.1016/s0040-4020(01)96594-9
日期:——
aromatic hydrocarbons and metal salts, and are completely quenched by the addition of triethylamine and 1,4-diazabicyclo[2.2.2]octane. No photo-oxygenation takes place in non-polar solvents. The electron transfer mechanism is proposed for the photo-oxygenations, in which the cation radicals of 1,2- diarylcyclopropanes are involved as chain carriers.
1,2- diarylcyclopropanes轴承给电子取代基在9,10-二氰基蒽的存在下光致氧化(DCA)的乙腈,得到的反式-和CIS以优良产率-3,5-二芳基-1,2-二氧戊环。较少电子富集的1,2-二芳基环丙烷的DCA增感光氧合可以低收率得到各种氧化产物。这些光反应通过添加某些芳族烃和金属盐而大大加速,并通过添加三乙胺和1,4-二氮杂双环[2.2.2]辛烷完全淬灭。在非极性溶剂中不会发生光氧合。提出了用于光氧合的电子转移机理,其中1,2-二芳基环丙烷的阳离子自由基作为链载体。