Sulfuric Acid → 4-Ethylbenzenesulfonic acid

HRID 1421115

Reaktionsgleichung

Reaktionsgleichung von HRID 1421115
[S:1](=[O:5])(=O)([OH:3])[OH:2].[CH2:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH3:7].C(=O)([O-])O.[Na+].[Cl-].[Na+]>O>[CH2:6]([C:8]1[CH:13]=[CH:12][C:11]([S:1]([OH:3])(=[O:5])=[O:2])=[CH:10][CH:9]=1)[CH3:7]

Komponenten

6

Edukt 4

HCID 1118Sulfuric AcidHCID 5234Sodium ChlorideHCID 7500EthylbenzeneHCID 516892Sodium Bicarbonate

Produkt 1

HCID 74024-Ethylbenzenesulfonic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
125 °C

Versuchsvorschrift

33 ml (0.6 mol) of conc. sulfuric acid was added to 62 ml (0.5 mol) of ethylbenzene, and the mixture was stirred for 1.5 hours under heating at 120 to 130° C. Layer separation will occur if unreacted ethylbenzene still remains, so the reaction was terminated when no layer separation was confirmed, and a solution containing p-ethylbenzenesulfonic acid as the major component was thus obtained. This solution was poured into 150 ml water and neutralized partially with sodium hydrogen carbonate, and the sodium chloride was added to precipitate crystals ol sodium p-ethylbenzene sulfonate. The resulting crystals were separated by filtration and dried in vacuo. This sodium p-ethylbenzenesulfonate is easily soluble in water and sparingly soluble in ethanol. A 1H-NMR spectrum of the resulting crystals is shown in FIG. 1.

Aufarbeitung

  1. customLayer separation
  2. customwas terminated when
  3. customno layer separation
  4. additiona solution containing p-ethylbenzenesulfonic acid as the major component
  5. customwas thus obtained
  6. customto precipitate crystals ol sodium p-ethylbenzene sulfonate
  7. customThe resulting crystals were separated by filtration
  8. customdried in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-745e2c68c96e4310ab9ad71ceb67f8fa
Quelldatensatz
uspto-grants-2000_06
Patentnummer
US06072083

Verknüpfte Notizen

Wird geladen…