Peters, Arnold T. published the artcileElectron impact-induced fragmentation of nitrodiarylamine disperse dyes, Application In Synthesis of 1821-27-8, the publication is Journal of the Society of Dyers and Colourists (1973), 89(11), 385-8, database is CAplus.
Determination of the principal fragment ions and their relative abundance in the mass spectra of nitrodiphenylamines (I), dinitrodiphenylamines (II), and (nitroanilino)- (III) and anilinonitropyridines (IV) indicated that mol. ions of 2-nitrodiarylamines are more stable than those of 4-nitrodiarylamines. Fragmentation of the NO2 group in 4-nitrodiarylamines occurs more readily, and this more facile fragmentation may be related to the lower photochem. stability of these dyes. The presence of a heterocyclic N atom in the dyes facilitates NO2 group fragmentation.
Journal of the Society of Dyers and Colourists 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 C12H9N3O4, Application In Synthesis of 1821-27-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia