Hydrochloric Acid → N,N-Dimethyl-2-cyano-3-difluoromethoxyphenylsulfonamide

HRID 1983985

Reaktionsgleichung

Reaktionsgleichung von HRID 1983985
[C:1]([C:3]1[C:8]([O:9][CH:10]([F:12])[F:11])=[CH:7][CH:6]=[CH:5][C:4]=1[S:13](Cl)(=[O:15])=[O:14])#[N:2].[CH3:17][NH:18][CH3:19].C(=O)([O-])[O-].[Na+].[Na+].Cl>O1CCCC1.O>[CH3:17][N:18]([CH3:19])[S:13]([C:4]1[CH:5]=[CH:6][CH:7]=[C:8]([O:9][CH:10]([F:12])[F:11])[C:3]=1[C:1]#[N:2])(=[O:15])=[O:14]

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 674DimethylamineHCID 10340Sodium CarbonateHCID 581007672-Cyano-3-difluoromethoxyphenylsulfonyl chloride

Produkt 1

HCID 11492812N,N-Dimethyl-2-cyano-3-difluoromethoxyphenylsulfonamide

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittel2×HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 0.65 g (2.4 mmol) of purified 2-cyano-3-difluoromethoxyphenylsulfonyl chloride in 20 ml of tetrahydrofuran a solution of 274 mg (2.4 mmol) of dimethylamine and 510 mg of sodium carbonate in 15 ml of water was added at room temperature. The reaction mixture was stirred at room temperature for 5 minutes before water was added. The aqueous phase was acidified to pH=1 using hydrochloric acid (10% strength by weight, aqueous solution). The aqueous phase was then extracted three times with dichloromethane. The combined organic extracts were dried over sodium sulfate and filtered. The filtrate was concentrated in vacuo and the resulting residue was triturated with methyl tert-butyl ether. Yield: 0.53 g (79% of theory) of the title compound having a melting point of 100-102° C.

Aufarbeitung

  1. additionwas added
  2. extractionThe aqueous phase was then extracted three times with dichloromethane
  3. dry with materialThe combined organic extracts were dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated in vacuo
  6. customthe resulting residue was triturated with methyl tert-butyl ether

Quellen und Nachweise

ORD-Eintrag
ord-e6bb020b71574b2384e27235b85943e0
Quelldatensatz
uspto-grants-2009_06
Patentnummer
US07544637B2

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