Preparation of p-aminoazo-benzene from aniline

Details Preparation of p-aminoazo-benzene from aniline Preparation of p-aminoazo-benzene from aniline

1981-03-13

1983-03-15

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260140, 260208, 564415, C07C10706, C07C11500, C09B 2700

Patent

active

043767303

ABSTRACT:
In the preparation of p-aminoazobenzene by diazotization of aniline with nitrous acid followed by isomerization of the intermediate diazoamino compound, the formation of undesirable by-products is suppressed by effecting the reaction in the presence of an acrylic nitrile, an acrylic acid or ester, or butadiene.

REFERENCES:
patent: 1977266 (1934-10-01), Dahlen
patent: 2538431 (1951-01-01), Shulmar
patent: 2714104 (1955-07-01), Chenicek et al.
patent: 3793305 (1974-02-01), Balon
patent: 4018751 (1977-04-01), Trecek

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