Water → HCID 57792065, Verbindung

HRID 889623Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 889623
[CH3:1][C:2]1[CH:7]=[C:6]([C:8]([F:17])([C:13]([F:16])([F:15])[F:14])[C:9]([F:12])([F:11])[F:10])[CH:5]=[C:4]([CH3:18])[C:3]=1[NH:19][C:20]([C:22]1[S:23][CH:24]=[C:25]([NH2:27])[CH:26]=1)=[O:21].[Br:28]N1C(=O)CCC1=O.O>O1CCCC1>[CH3:18][C:4]1[CH:5]=[C:6]([C:8]([F:17])([C:13]([F:14])([F:15])[F:16])[C:9]([F:11])([F:12])[F:10])[CH:7]=[C:2]([CH3:1])[C:3]=1[NH:19][C:20]([C:22]1[S:23][C:24]([Br:28])=[C:25]([NH2:27])[CH:26]=1)=[O:21]

Komponenten

5

Edukt 3

HCID 962WaterHCID 67184N-bromobutanimideHCID 57792047HCID 57792047, Verbindung

Produkt 1

HCID 57792065HCID 57792065, VerbindungAusbeute 80 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 4-amino-thiophene-2-carboxylic acid [2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-phenyl]-amide (360 mg, 0.87 mmol) (Example I3) in tetrahydrofuran (20 ml) was added N-bromosuccinimide (NBS) (155 mg, 0.87 mmol). The mixture was stirred at room temperature for 1.5 hours. Water (50 ml) was added and the organic phase was extracted twice with ethyl acetate (50 ml). The combined organic extracts were dried over sodium sulfate and the solvent evaporated. The residue was purified by column chromatography on silica gel (eluent: ethyl acetate/hexane) to give 5-bromo-4-amino-thiophene-2-carboxylic acid [2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-phenyl]-amide (343 mg; 80% yield); 1H-NMR (CDCl3, 400 MHz): 7.26 (s, 2H), 7.10 (s, 1H), 3.8 (s, 2H), 2.24 (s, 6H) ppm.

Aufarbeitung

  1. extractionthe organic phase was extracted twice with ethyl acetate (50 ml)
  2. dry with materialThe combined organic extracts were dried over sodium sulfate
  3. customthe solvent evaporated
  4. customThe residue was purified by column chromatography on silica gel (eluent: ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-cd238f135ff14385a62e42a6f73d68d7
Quelldatensatz
uspto-grants-2012_08
Patentnummer
US08252936B2

Notizen zur Reaktion

Wird geladen…