Silver-Catalyzed <i>para</i>-Selective Amination and Aminative Dearomatization of Phenols with Azodicarboxylates in Water
作者:Ruinan Zhao、Zhong Zhou、Jixiang Liu、Xia Wang、Qian Zhang、Dong Li
DOI:10.1021/acs.orglett.0c03147
日期:2020.10.16
An efficient silver-catalyzed para-selective amination and aminative dearomatization of phenols with azodicarboxylates was developed. It afforded the para-aminophenols or amino cyclohexadieneones from free phenols depending on whether it has a para-substituent. The reaction proceeded smoothly in water under simple and mild conditions, giving the highly selective products in good yields within a short
Hexafluoro-2-propanol Promotes <i>para</i>
-Selective C-H Amination of Free Anilines with Azodicarboxylates
作者:Ren-Jin Tang、Thierry Milcent、Benoit Crousse
DOI:10.1002/ejoc.201700794
日期:2017.9.1
An effective, mild, and clean method for the C–H amination of free anilines with azodicarboxylates in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) without the need for any additional catalysts or reagents was developed. The reaction was found to be highly regioselective and provided a series of p-aminophenylhydrazine derivatives in excellent yields. Moreover, compatibility with a free amino group makes