3-Bromo-N,N-dimethylaniline is involved in fluorination using metal fluoride in the presence of 2-(di-1-adamantylphosphino)-3,6-dimethoxy-2',4',6'-tri-i-propyl-1,1'-biphenyl (AdBrettPhos)-based Pd precatalyst, used to prepare 3-fluoro-N,N- dimethylaniline.