PHOTOOXYGENATION OF 1,2-DIARYLCYCLOPROPANES: FORMATION OF 3,5-DIARYL-1,2-DIOXOLANES VIA PHOTOINDUCED ELECTRON TRANSFER
作者:Kazuhiko Mizuno、Nobuhiro Kamiyama、Yoshio Otsuji
DOI:10.1246/cl.1983.477
日期:1983.4.5
The photooxygenation of electron-rich 1,2-diarylcyclopropanes such as 1,2-bis(4-methoxyphenyl)cyclopropane and 1-(4-methoxyphenyl)-2-phenylcyclopropane in the presence of 9,10-dicyanoanthracene(DCA) as a sensitizer in acetonitrile affords trans- and cis-3,5-diaryl-1,2-dioxolanes in high yields. This photooxygenation is initiated by the electron transfer from 1,2-diarylcyclopropanes to the excited singlet
在 9,10-二氰基蒽 (DCA) 存在下,富电子 1,2-二芳基环丙烷如 1,2-双(4-甲氧基苯基)环丙烷和 1-(4-甲氧基苯基)-2-苯基环丙烷的光氧化反应乙腈中的敏化剂以高产率提供反式和顺式 3,5-二芳基-1,2-二氧戊环。这种光氧化是由电子从 1,2-二芳基环丙烷转移到激发的单线态 DCA 引发的,涉及环丙烷的阳离子自由基作为关键中间体。