Electrosynthesis of Azobenzenes Directly from Nitrobenzenes
作者:Yanfeng Ma、Shanghui Wu、Shuxin Jiang、Fuhong Xiao、Guo‐Jun Deng
DOI:10.1002/cjoc.202100470
日期:2021.12
The electrochemical reduction strategy of nitrobenzenes is developed. The chemistry occurs under ambient conditions. The protocol uses inert electrodes and the solvent, DMSO, plays a dual role as a reducing agent. Its synthetic value has been demonstrated by the highly efficient synthesis of symmetric, unsymmetric and cyclic azo compounds.
A Practical Synthesis of Azobenzenes through Oxidative Dimerization of Aromatic Amines Using tert-Butyl Hypoiodite
作者:Satoshi Minakata、Youhei Takeda、Sota Okumura
DOI:10.1055/s-0032-1318388
日期:——
synthetic method of azobenzenes through oxidative dimerization of aromatic amines using a unique and cost-effective iodinating reagent is described. This new method allows for easy access to both of symmetrical and unsymmetrical azobenzenes under extremely mild conditions. A straightforward, convenient, and efficient synthetic method of azobenzenes through oxidative dimerization of aromatic amines using
unsymmetric aromatic azocompounds through an efficient and cross-selective oxidative dimerization of aromatic amines using tert-butyl hypoiodite (t-BuOI) under metal-free and mild conditions has been developed. This method was also found applicable to the synthesis of heteroaromatic azocompounds. The spectroscopic study indicates the involvement of N,N-diiodoanilines in the oxidative reaction as the key
similar treatment of benzylamines and benzhydrylamine gave N-benzylidenebenzylamines and N-benzhydrylidenebenzhydrylamine, respectively. α-Alkyl-substituted benzylamines gave diazenes and the corresponding phenyl ketones, competitively. An azine was obtained by interaction with the reagent of a benzylamine carrying an electron-withdrawing substituent at the α position, such as ethyl phenylglycinate.