Sulfuric Acid → 4-Amino-1,3-benzenedisulfonic acid

HRID 1903018

Reaktionsgleichung

Reaktionsgleichung von HRID 1903018
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[S:8](=[O:12])(=[O:11])([OH:10])O>ClC1C=CC=CC=1Cl>[NH2:1][C:2]1[C:7]([S:8]([OH:12])(=[O:11])=[O:10])=[CH:6][C:5]([S:8]([OH:10])(=[O:12])=[O:11])=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 1118Sulfuric AcidHCID 6115Aniline

Produkt 1

HCID 673044-Amino-1,3-benzenedisulfonic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 72391,2-DichlorobenzeneLösungsmittel

Versuchsvorschrift

186.2 g (2 mols) of aniline are initially introduced into 500 ml of 1,2-dichlorobenzene and 208.3 g (2.04 mols) of 96% strength sulphuric acid are added dropwise. The mixture is heated for 8 hours at the boil under a water separator, during which period distillate passes over at a rate of 700 ml per hour, cooled and filtered with suction. After it has been dried, the precipitate weighs 338.5 g and contains 86.1% of p-sulphanilic acid (84.2% of the theoretical yield) and 11.2% of aniline-2,4-disulphonic acid (7.5%, relative to aniline).

Aufarbeitung

  1. additionare added dropwise
  2. temperatureThe mixture is heated for 8 hours at the boil under a water separator
  3. temperatureduring which period distillate passes over at a rate of 700 ml per hour, cooled
  4. filtrationfiltered with suction
  5. customAfter it has been dried

Quellen und Nachweise

ORD-Eintrag
ord-742a82d786254592a9c68381ff0db8a4
Quelldatensatz
uspto-grants-1984_03
Patentnummer
US04435336

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