the low reactivity of the Ar–NO2 bond toward oxidative addition. We report here the C–N coupling of nitroarenes and amines using palladium/5-(2,4,6-triisopropylphenyl)imidazolylidene[1,5-a]pyridines as the catalyst. The ligands are readily available from commercial chemicals. The reaction shows broad substrate scope and functionalgroup tolerance. The method is applicable to both aromatic and aliphatic
P(<i>i</i>-BuNCH<sub>2</sub>CH<sub>2</sub>)<sub>3</sub>N: An Effective Ligand in the Palladium-Catalyzed Amination of Aryl Bromides and Iodides
作者:Sameer Urgaonkar、M. Nagarajan、J. G. Verkade
DOI:10.1021/jo0205309
日期:2003.1.1
It is shown that the bicyclictriaminophosphine P(i-BuNCH2CH2)3N serves as an effective ligand for the palladium-catalyzed amination of a wide array of arylbromides and iodides. Other bicyclic or acyclic triaminophosphines, even those of similar basicity and/or bulk, were inferior.