Water → Benzoic acid, 3-sulfo-

HRID 273915

Reaktionsgleichung

Reaktionsgleichung von HRID 273915
Cl[S:2]([C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][CH:13]=1)[C:8]([OH:10])=[O:9])(=[O:4])=[O:3].O.ClS(C1C=CC=CC=1C(O)=O)(=O)=[O:17]>C1(C)C=CC=CC=1>[S:2]([C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][CH:13]=1)[C:8]([OH:10])=[O:9])([OH:17])(=[O:4])=[O:3]

Komponenten

5

Edukt 3

HCID 962Water2×HCID 77641Benzoic acid, 3-(chlorosulfonyl)-HCID 144744642-(Chlorosulfonyl)benzoic acid

Produkt 1

HCID 8477Benzoic acid, 3-sulfo-Ausbeute 95,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

300 g of 3-(chlorosulfonyl)benzoic acid containing 38.8% of water (corresponding to 183.6 g (0.83 mol) of 100% chlorosulfonylbenzoic acid) are admixed with 100 g of water and heated to 100° C. for 1 hour. Then 500 g of toluene are added dropwise over 1 hour and a total of 164 ml of water distilled off azeotropically with toluene. The reaction mixture is cooled and the precipitated product filtered off with suction. After drying at 100° C./100 torr (13.16 kPa) 163.5 g of 3-sulfobenzoic acid are obtained, the purity determined by titration being 98.2%; this corresponds to a yield of 95.4%.

Aufarbeitung

  1. distillationa total of 164 ml of water distilled off azeotropically with toluene
  2. temperatureThe reaction mixture is cooled
  3. filtrationthe precipitated product filtered off with suction
  4. dry with materialAfter drying at 100° C./100 torr (13.16 kPa) 163.5 g of 3-sulfobenzoic acid
  5. customare obtained

Quellen und Nachweise

ORD-Eintrag
ord-f331762fe48d4032a45a6428d40a8c32
Quelldatensatz
uspto-grants-1995_02
Patentnummer
US05387711

Verknüpfte Notizen

Wird geladen…