A process for the preparation of N,N-bis(3,4-dimethylphenyl)4-biphenylamine which comprises the reaction of N,N-bis(3,4-dimethylphenyl)amine and an iodobiphenyl in the presence of a ligand copper catalyst, and wherein the ligand is selected from the group consisting of monodentate tertiary amines and bidentate tertiary amines, and which reaction is preferably accomplished at a temperature of from about 120°C to about 150°C.
                            一种制备 N,N-双(3,4-二甲基苯基)-4-
联苯胺的工艺,包括 N,N-双(3,4-二甲基苯基)胺和
碘联苯在
配体铜催化剂存在下的反应,其中
配体选自由单齿叔胺和双齿叔胺组成的组,该反应最好在约 120°C 至约 150°C 的温度下完成。