Striking contrast between photoinduced and non-photoinduced electron-transfer reactions of 1,4-diphenyl-2,3-diazabicyclo[2.2.2]oct-2-ene
Abstract
Photoinduced electron-transfer (PET) reactions of 1,4-diphenyl-2,3-diazabicyclo[2.2.2]oct-2-ene 1 result in a quantitative formation of 2,5-diphenylhexa-1,5-diene 2, in sharp contrast to the results of non-PET reactions and showing the importance of a back electron-transfer (BET) process in PET reactions.