obtained from the ortho isomer), with minimal ring nitration. The formation of bibenzyls on irradiation with t-butyl peroxide of the same substrates is also studied. The mechanisms of the reactions with the NO•3 radical, a good electron acceptor, and with the alkoxy radical are contrasted and compared with photochemical hydrogen abstraction by nπ* and, respectively, ππ* excited states.
在邻,间和
对伞花烃存在下辐照
硝酸铈(IV)
铵会产生攻击甲基的产物(
硝酸盐-这些
硝酸盐的分离产率为55-69%-硝基衍
生物和醛)以及在异丙基上(
苯乙酮,不是从邻位异构体获得的),且环硝化作用极小。还研究了在相同的底物上用
叔丁基过氧化物辐照形成
联苄。对比了与NO • 3自由基(一种良好的电子受体)和与烷氧基的反应机理,并分别通过nπ*和ππ*激发态与光
化学氢提取进行了比较。