species [Bi(NAr2)3] readily release aminyl radicals [NAr2]. at ambient temperature in solution. These reactions yield the corresponding hydrazines, Ar2N−NAr2, as a result of highly selective N−N coupling. The exploitation of facile homolytic Bi−Pn bond cleavage for Pn−Pn bond formation was extended to higher homologues of the pnictogens (Pn=N–As): homoleptic bismuth amides mediate the highly selective dehydrocoupling
Facile Cu(I)-Catalyzed Oxidative Coupling of Anilines to Azo Compounds and Hydrazines with Diaziridinone under Mild Conditions
作者:Yingguang Zhu、Yian Shi
DOI:10.1021/ol4005917
日期:2013.4.19
A mild and highly efficient Cu(I)-catalyzed oxidative coupling of anilines is described. Various primary and secondary anilines can be efficiently coupled under mild conditions to the corresponding azo compounds and hydrazines in high yields. This method provides a direct and practical access to these compounds and is also amenable to gram scale with no special precautions to exclude air or moisture
Transition-Metal-Free Dehydrogenative N-N Coupling of Secondary Amines with KI/KIO<sub>4</sub>
作者:Dehang Yin、Jian Jin
DOI:10.1002/ejoc.201900763
日期:2019.9.8
brother do it together: With KI/KIO4, a transition‐metal‐free dehydrogenativeN–Ncoupling of secondaryamines has been accomplished. A diverse range of diphenylamines, carbazoles, and N‐alkylanilines readily undergo N–N homo‐coupling effectively. Notably, the N–N cross‐coupling of two different arylamines is also demonstrated, providing a straightforward approach to complex N–N structures.
碘兄弟一起做:借助KI / KIO 4,已实现了仲胺的无过渡金属脱氢N-N偶联。各种各样的二苯胺,咔唑和N-烷基苯胺很容易有效地进行N-N均偶联。值得注意的是,还展示了两种不同芳基胺的N–N交叉偶联,为复杂的N–N结构提供了直接的方法。
An I2-mediated N–Ncoupling reaction has been established for oxidative dimerization of N-aryl aminopyridines to a variety of novel hydrazine derivatives under mild conditions. This synthetic method does not require use of transition metals and can be conveniently carried out on a gram scale. It is also applicable to diphenylamine and N-alkyl aniline substrates.