Diazocyclopropane and an cyclopropyldiazonium ion, which are highly reactive intermediates, can be generated and trapped by appropriate substrates immediately in the direct nitrosation of cyclopropylamine with alkyl nitrites. Diazocyclopropane is trapped by unsaturated compounds to form the corresponding 1,3-dipolar cycloadducts, while cyclopropyldiazonium reacts with reactive arenes and CH acids (e
重氮
环丙烷和环丙基重氮离子是高活性中间体,可以在
环丙胺与
亚硝酸烷基酯的直接亚硝化过程中立即生成并被合适的底物捕获。重氮
环丙烷被不饱和化合物捕获以形成相应的 1,3-偶极环加合物,而环丙基重氮与活性
芳烃和 CH 酸(例如
丙二腈)反应生成偶氮化合物。结果表明,在等摩尔量的
2-萘酚和
丙烯腈或
甲基丙烯酸甲酯存在下,可以同时捕获平衡中的环丙基重氮和重氮
环丙烷。