Preparation of 4-aminodiphenylamine involves hydrogenating nitrosobenzene with hydrogen in the presence of proton catalyst and hydrogenation catalyst

摘要

4-Aminodiphenylamine (4-ADPA) is prepared by hydrogenating nitrosobenzene with hydrogen in the presence a proton catalyst and a hydrogenation catalyst, optionally in the presence of an inert organic solvent to form 4-ADPA ammonium salt which is then thermally decomposed to obtain 4-ADPA.