The photoinduced electron-transfer Cope rearrangement of
 (E,E)-3,6-bis(4-methoxyphenyl)octa-2,6-diene
 (E,E)-1 is kinetically controlled
 and affords quantitatively the thermodynamically less stable
 (±)-3,4-dimethyl-2,5-bis(4-methoxyphenyl)hexa-1,5-diene
 (±)-1 at -80 °C in sharp contrast to the
 thermodynamically-controlled thermal Cope rearrangement.
                                    光诱导电子转移Cope重排反应对(E,E)-3,6-双(4-
甲氧基苯基)-2,
6-辛二烯(E,E)-1的转化受动力学控制,在-80°C下可定量生成热力学稳定性较差的(±)-3,
4-二甲基-2,5-双(4-
甲氧基苯基)-1,5-
己二烯(±)-1,这与热力学控制的Cope重排反应形成鲜明对比。