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