PROCESS FOR THE PREPARATION OF AROMATIC ANINO AZO COMPOUND FROM AROMATIC AMINES VIA DIAZOTOSATION BY NITROUS VAPOURS,COUPLING,AND REARRANGEMENT REACTIONS

摘要

Aromatic aminoazo compd. was prepd. in quant. yield and 99% purity as follows. Put aromatic amine, aromatic amine salt and water to α, β, γ respectively. The wt. ratio of reaction medium as 10α70, 5γ, 13β and α+β+γ=100 was kept, aromatic amine was diazotized with a stream of nitrous vapours to give diazonium salt. Then, this salt was transferred to aromatic amine by coupling and rearrangement was taken place to produce aromatic diazoamino compd.