Palladium-Catalyzed Amination of Aryl Chlorides and Bromides with Ammonium Salts
作者:Rebecca A. Green、John F. Hartwig
DOI:10.1021/ol501739g
日期:2014.9.5
We report the palladium-catalyzed coupling of aryl halides with ammonia and gaseous amines as their ammonium salts. The coupling of aryl chlorides and ortho-substituted aryl bromides with ammonium sulfate forms anilines with higher selectivity for the primary arylamine over the diarylamine than couplings with ammonia in dioxane. The resting state for the reactions of aryl chlorides is different from
Nickel-Catalyzed Amination of Aryl Chlorides with Ammonia or Ammonium Salts
作者:Rebecca A. Green、John F. Hartwig
DOI:10.1002/anie.201500404
日期:2015.3.16
The nickel‐catalyzed amination of aryl chlorides to form primary arylamines occurs with ammonia or ammonium sulfate and a well‐defined single‐component nickel(0) precatalyst containing a Josiphos ligand and an η2‐bound benzonitrile ligand. This system also catalyzes the coupling of aryl chlorides with gaseous amines in the form of their hydrochloride salts.