Chemistry Letters p. 477 - 480 (1983)
Update date:2022-08-03
Topics:
Mizuno, Kazuhiko
Kamiyama, Nobuhiro
Otsuji, Yoshio
The photooxygenation of electron-rich 1,2-diarylcyclopropanes such as 1,2-bis(4-methoxyphenyl)cyclopropane and 1-(4-methoxyphenyl)-2-phenyl-cyclopropane 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 DCA, involving the cation radical of cyclopropanes as a key intermediate.
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