Electrophilic nitration of benzylcyclopropanes, allylbenzenes, and diphenylmethanes containing ortho, para-orienting substituents in the para position of the benzene ring results mainly in replacement of the cyclopropylmethyl, allyl, or benzyl group, respectively (ipso substitution). The nitration of 4-cyclopropylallylbenzene is not accompanied by nitrodealkylation, and the products are only 2- and 3-nitro-4-cyclopropylallylbenzenes.
苯环对位上含有正交、对位取向取代基的苄基
环丙烷、烯丙基苯和
二苯基甲烷的亲电硝化主要分别导致
环丙基甲基、烯丙基或苄基的取代(同位取代)。4-环丙基烯丙基苯的硝化不伴有硝基脱烷基化,产物仅为 2-和
3-硝基-4-环丙基烯丙基苯。