Selective Acid-Catalyzed Production of Bis-Aniline M and P

Bis-aniline M and P are aromatic diamines which have found utility in a variety of high performance polymers. Although syntheses have been previously reported, they have been predominantly without selectivity data. Investigations into production of the title diamines first focused on the model system of α-methylstyrene/aniline. Effects of catalyst, temperature and reaction time are reported and extended to the bis-aniline M and P systems.