Synthesis of Sterically Congested Triarylamines by Palladium-Catalyzed Amination
作者:Stefan Riedmüller、Oliver Kaufhold、Hubert Spreitzer、Boris J. Nachtsheim
DOI:10.1002/ejoc.201400046
日期:2014.3
An efficient protocol for the palladium-catalyzed synthesis of stericallycongested triarylamines from commercially available 1-chloro- or 1-bromonaphthalenes and diarylamines is described. The application of alkyllithium reagents as strong bases and a combination of Pd(OAc)2 and SPhos (2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl) plays a crucial role in the success of this otherwise difficult