2-Isoxazolines with electron-withdrawing substituents on the 3-aryl moiety (p-cyanophenyl, p-methoxycarbonylphenyl) gave upon irradiation in indene a mixture of syn and anti cycloadducts regiospecifically toward the C=N double bond via their exciplex intermediate.
在 3-芳基部分(对
氰基苯基、对甲氧基羰基苯基)上具有吸电子取代基的 2-
异恶唑啉在
茚中辐照后产生顺式和反环加合物的混合物,通过其激基复合物中间体区域特异性地朝向 C=N 双键。