[6]-1,4-Cyclophaneanthraquinone (1) has been synthesized. Both the lowest singlet and triplet excited states of 1 possess ππ* nature. Correspondingly, upon irradiation, 1 undergoes valence isomerization to afford Dewar-anthraquinone (2) quantitatively, and neither intramolecular nor intermolecular hydrogen abstractions were observed.
合成了[6] -1,4-环
菲蒽醌(1)。最低的单重态和三重态激发态均为1都具有ππ*性质。相应地,在辐照下,1进行化合价异构化以定量获得杜瓦
蒽醌(2),并且未观察到分子内或分子间氢的提取。