Potassium Iodide → Methyl 2-(4-chlorobenzylthio)acetate

HRID 1112411

Reaktionsgleichung

Reaktionsgleichung von HRID 1112411
C(=O)([O-])[O-].[K+].[K+].[Cl:7][C:8]1[CH:15]=[CH:14][C:11]([CH2:12][SH:13])=[CH:10][CH:9]=1.Cl[CH2:17][C:18]([O:20][CH3:21])=[O:19].[I-].[K+]>CC(C)=O>[Cl:7][C:8]1[CH:15]=[CH:14][C:11]([CH2:12][S:13][CH2:17][C:18]([O:20][CH3:21])=[O:19])=[CH:10][CH:9]=1

Komponenten

6

Edukt 4

HCID 4875Potassium IodideHCID 7295Methyl chloroacetateHCID 11430Potassium CarbonateHCID 804094-Chlorobenzyl mercaptan

Produkt 1

HCID 3311340Methyl 2-(4-chlorobenzylthio)acetateAusbeute 100 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

Anhydrous acetone (100 ml), potassium carbonate (21 g), p-chlorobenzylmercaptan (19.5 ml), methyl chloroacetate (13.2 ml) and potassium iodide (0.1 g) are mixed in the cold. The mixture thus obtained is stirred and heated under reflux for 7 hours. It is cooled, the precipitate (K2CO3) is filtered off, the acetone is evaporated from the filtrate and the residue is taken up with ether. The ether solution is washed with 4 N NaOH and then with water until the wash waters have a neutral pH. The ether solution is then dried over MgSO4, the ether is evaporated and 34.5 g (100% yield) of methyl p-chlorobenzylmercapto-acetate are collected in the form of a chromatographically pure oil.

Aufarbeitung

  1. customThe mixture thus obtained
  2. temperatureheated
  3. temperatureunder reflux for 7 hours
  4. temperatureIt is cooled
  5. filtrationthe precipitate (K2CO3) is filtered off
  6. customthe acetone is evaporated from the filtrate
  7. washThe ether solution is washed with 4 N NaOH
  8. dry with materialThe ether solution is then dried over MgSO4
  9. customthe ether is evaporated

Quellen und Nachweise

ORD-Eintrag
ord-8cb35177ced04d52a229146b7f15e42a
Quelldatensatz
uspto-grants-1978_10
Patentnummer
US04122186

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