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Nanosecond time-resolved absorption spectroscopy on the laser flash photolysis of 1,2-bis(α-styryl)benzene (1) under N-methylquinolinium tetrafluoroborate–toluene-sensitized conditions in acetonitrile confirmed that an o-quinodimethane radical cation (2 + , λ max =569nm) decayed and the corresponding neutral prototype (2, λ max =444nm) rose with rate constants of 5.6 and 5...
1,3-Bis(4-methoxyphenyl)cyclohexane-1,3-diyl cation radical gives 1,5-bis(4-methoxyphenyl)bicyclo[3.1.0]hexane through 1,3-bis(4-methoxyphenyl)cyclohexane-1,3-diyl when generated by photoinduced electron transfer, but gives 4,4''-dimethoxy-m-terphenyl when generated by using one-electron oxidant, demonstrating its divergent reactivity depending upon the electron-transfer conditions employed.
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