C–H functionalization of aromatic amines for azidation catalyzed by Betti base coordinated copper(<scp>ii</scp>) complexes under ultrasonication
作者:Premkumar G.、Toka Swu、Richa Gupta、Kothandaraman R.
DOI:10.1039/d3nj01927f
日期:——
Five new Betti base copper(II) complexes (C1–C5) are successfully synthesized and characterized spectroscopically. X-ray diffraction analysis confirmed the square planar geometry of complex C4. Their catalytic application in the C–H functionalization of aromatic amines for azidation was successfully demonstrated under ultrasonication. Complex C5 showed better catalytic activity and produced 2-azidoaniline
Iron(II) Bromide-Catalyzed Synthesis of Benzimidazoles from Aryl Azides
作者:Meihua Shen、Tom G. Driver
DOI:10.1021/ol801227f
日期:2008.8.7
The identity of the ortho-substituent of an arylazide influences its reactivity toward transition metals. Substitution of a vinyl group with an imine disables rhodium(II)-mediated C-H amination and triggers a Lewis acid mechanism catalyzed by iron(II) bromide to facilitate benzimidazole formation.