4-(4-Aminophenyl)benzenamine double nitriding, first in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and again between Benzene-1,4-diamine coupling,N-(4-aminophenyl)acetamide(2 Moore) diazo, a in alkaline conditions and by the neighbors 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acida coupling, a and Benzene-1,4-diamine coupling between, then hydrolysis amide base.
