Cage Encapsulated Gold Nanoparticles as Heterogeneous Photocatalyst for Facile and Selective Reduction of Nitroarenes to Azo Compounds
作者:Bijnaneswar Mondal、Partha Sarathi Mukherjee
DOI:10.1021/jacs.8b07767
日期:2018.10.3
fine-dispersed cage anchored AuNPs (Au@OC1R) have been finally used as potential heterogeneous photocatalyst for very facile and selective conversion of nitroarenes to respective azo compounds at ambient temperature in just 2 h reaction time. Exceptional chemical stability and reusability without any agglomeration of AuNPs even after several cycles of use are the potential features of this material. The composite
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.
Oxidative Dimerization of Aromatic Amines using<i>t</i>BuOI: Entry to Unsymmetric Aromatic Azo Compounds
作者:Youhei Takeda、Sota Okumura、Satoshi Minakata
DOI:10.1002/anie.201202786
日期:2012.7.27
all the hype: An oxidative dimerization reaction of aromatic amines utilizing tert‐butyl hypoiodite (tBuOI) under mild reaction conditions leads to aromatic azocompounds (see scheme). The method allows access to unsymmetric aromatic azocompounds, which are difficult to prepare by conventional synthetic methods, in a selective manner.
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