Tronov, B. V. published the artcileSynthesis of certain nitro and amino derivatives of diphenylamine and their complexes with acid reagents, Quality Control of 1821-27-8, the publication is Dokl. 2-oi [Vtoroi] Mezhvuz. Konf. po Khim. Org. Kompleksn. Soedin. (1963), 67-8, database is CAplus.
Formation of complexes of nitro and amino derivatives of Ph2NH (I) was investigated. 4-Nitro- (Ia), 4,4′-dinitro- (Ib), 2,4-dinitro (Ic), 2,4-diamino (Id), and 4,4′-diaminodiphenylamine (Ie) were prepared Id and Ie were obtained by reduction of the corresponding nitro derivatives with SnCl2 and HCl. The following complex compounds were prepared and extracted from alc. or C6H6 (composition of the complex, ratio of components, and m.p. given): Id + 2,4-dinitrophenol (II), 1:1, 83-4¡ã; Id + 2,6-dibromo-4-nitrophenol (III), 1:1, 156-8¡ã; Id + 2,6-dichloro-4-nitrophenol (IV), 1:1, 150-2¡ã; Id + picric acid (V), 1:1, 177-8¡ã; Ic + II, 1:1, 95-6¡ã; Ic + V, 1:1, 100-2¡ã; Ia + IV, 1:1, 94-6¡ã; Ia + III, 1:1, 98-9¡ã; Ie + V, 1:1, > 220¡ã; Ie + II, –, >220¡ã; Ie + IV, –, >220¡ã; Ie + III, –, >220¡ã.
Dokl. 2-oi [Vtoroi] Mezhvuz. Konf. po Khim. Org. Kompleksn. Soedin. published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H19BrS, Quality Control of 1821-27-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia