(Chlorothio)formyl chloride → Methyl 2-chloro-3-(1,3,4-oxathiazolin-2-on-5-yl)-4-methylsulfonylbenzoate

HRID 1276124Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1276124
Cl[C:2]([S:4]Cl)=[O:3].[NH2:6][C:7]([C:9]1[C:10]([Cl:23])=[C:11]([CH:16]=[CH:17][C:18]=1[S:19]([CH3:22])(=[O:21])=[O:20])[C:12]([O:14][CH3:15])=[O:13])=[O:8]>C1(C)C=CC=CC=1>[Cl:23][C:10]1[C:9]([C:7]2[O:8][C:2](=[O:3])[S:4][N:6]=2)=[C:18]([S:19]([CH3:22])(=[O:20])=[O:21])[CH:17]=[CH:16][C:11]=1[C:12]([O:14][CH3:15])=[O:13]

Komponenten

4

Edukt 2

HCID 75990(Chlorothio)formyl chlorideHCID 22114953Methyl 3-aminocarbonyl-2-chloro-4-methylsulfonylbenzoate

Produkt 1

HCID 22114911Methyl 2-chloro-3-(1,3,4-oxathiazolin-2-on-5-yl)-4-methylsulfonylbenzoateAusbeute 70,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

9.80 g (75 mmol) of chlorocarbonylsulfenyl chloride were added dropwise to a solution of 4.37 g (15 mmol) of methyl 3-aminocarbonyl-2-chloro-4-methylsulfonylbenzoate in 150 ml of dry toluene. The mixture was stirred under reflux for 48 hours, and the solvent was then removed under reduced pressure and the residue was chromatographed over silica gel (eluent: ethyl acetate/cyclohexane=1/1). 3.70 g (70% of theory) of methyl 2-chloro-3-(1,3,4-oxathiazolin-2-on-5-yl)-4-methylsulfonylbenzoate were obtained.

Aufarbeitung

  1. temperatureunder reflux for 48 hours
  2. customthe solvent was then removed under reduced pressure
  3. customthe residue was chromatographed over silica gel (eluent: ethyl acetate/cyclohexane=1/1)

Quellen und Nachweise

ORD-Eintrag
ord-3f782baec5834626a2c3e22c868db154
Quelldatensatz
uspto-grants-2000_12
Patentnummer
US06165944

Notizen zur Reaktion

Wird geladen…