Ammonia → 2-Amino-1-naphthalenesulfonic acid

HRID 1980465

Reaktionsgleichung

Reaktionsgleichung von HRID 1980465
[CH:1]1[CH:6]=[C:5]2[CH:7]=[CH:8][C:9](O)=[C:10]([S:11]([OH:14])(=[O:13])=[O:12])[C:4]2=[CH:3][CH:2]=1.[NH3:16]>>[NH2:16][C:9]1[CH:8]=[CH:7][C:5]2[C:4](=[CH:3][CH:2]=[CH:1][CH:6]=2)[C:10]=1[S:11]([OH:14])(=[O:13])=[O:12]

Komponenten

3

Edukt 2

HCID 222AmmoniaHCID 112781-Naphthalenesulfonic acid, 2-hydroxy-

Produkt 1

HCID 66702-Amino-1-naphthalenesulfonic acid

Versuchsvorschrift

treating the resultant aqueous solution of the ammonium salt of oxy-Tobias acid, without increasing the concentration beforehand, with NH3 and concentrated (NH4)2SO3 or (NH4)HSO3 solution in the temperature range from 120° to 150° C. and at a pressure of 10 to 20 bar for 4 to 12 hours until the pH value is 9 to 12, to give the ammonium salt of 2-amino-1-naphthalenesulfonic acid (Tobias acid), and, after stripping off NH3 and removal of 2-naphthylamine by extraction with an aromatic hydrocarbon,

Aufarbeitung

  1. temperaturewithout increasing the concentration beforehand

Quellen und Nachweise

ORD-Eintrag
ord-494ce670d2294346bc357b4c55c7c0b5
Quelldatensatz
uspto-grants-1985_04
Patentnummer
US04510100

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