Photoinduced electron-transfer bicyclopropenyl-benzene rearrangements of 2,2',3,3'-tetraphenylbicyclopropenyls: a new mechanism via Dewar benzene.
[reaction: see text] The 9,10-dicyanoanthracene-sensitized photoreaction of 1-methyl- and 1,1'-dimethyl-2,2',3,3'-tetraphenylbicyclopropenyl gives the corresponding benzene and Dewar benzene derivatives, indicating that their photoinduced electron-transfer bicyclopropenyl-benzene rearrangements proceed via Dewar benzenes.
Ikeda
Hiroshi
H
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan. ikeda@org.chem.tohoku.ac.jp
Hoshi
Yosuke
Y
Kikuchi
Yuka
Y
Tanaka
Futoshi
F
Miyashi
Tsutomu
T