Potassium Carbonate → 3-[5-(5-chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-2-(1-cyclopropyl-piperidin-4-ylcarbamoyl)-3H-benzoimidazole-5-carboxylic acid methyl ester

HRID 18577Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 18577
[CH3:1][O:2][C:3]([C:5]1[CH:25]=[CH:24][C:8]2[NH:9][C:10]([C:12](=[O:23])[NH:13][CH:14]3[CH2:19][CH2:18][N:17]([CH:20]4[CH2:22][CH2:21]4)[CH2:16][CH2:15]3)=[N:11][C:7]=2[CH:6]=1)=[O:4].C([O-])([O-])=O.[K+].[K+].[Cl:32][C:33]1[S:37][C:36]([C:38]2[O:42][N:41]=[C:40]([CH2:43]OS(C)(=O)=O)[CH:39]=2)=[CH:35][CH:34]=1>CN(C=O)C>[CH3:1][O:2][C:3]([C:5]1[CH:25]=[CH:24][C:8]2[N:9]=[C:10]([C:12](=[O:23])[NH:13][CH:14]3[CH2:15][CH2:16][N:17]([CH:20]4[CH2:22][CH2:21]4)[CH2:18][CH2:19]3)[N:11]([CH2:43][C:40]3[CH:39]=[C:38]([C:36]4[S:37][C:33]([Cl:32])=[CH:34][CH:35]=4)[O:42][N:41]=3)[C:7]=2[CH:6]=1)=[O:4]

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 865958785-(5-Chlorothiophen-2-yl)isoxazol-3-ylmethyl methanesulfonateHCID 178497372HCID 178497372, Verbindung

Produkt 1

HCID 670117253-[5-(5-chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-2-(1-cyclopropyl-piperidin-4-ylcarbamoyl)-3H-benzoimidazole-5-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

17.3 g (50.52 mmol) 2-(1-Cyclopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-5-carboxylic acid methyl ester were dissolved in 800 mL DMF. Subsequently 10.47 g (75.8 mmol) K2CO3 and 14.84 g (50.52 mmol) methanesulfonic acid 5-(5-chloro-thiophen-2-yl)-isoxazol-3-ylmethyl ester were added and the resulting mixture was stirred for 2 h at 80° C. The mixture was concentrated under reduced pressure. The residue was suspended in 800 mL ethyl acetate. The next day the resulting precipitate was filtered off and washed with 100 mL ethyl acetate to give 3-[5-(5-chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-2-(1-cyclopropyl-piperidin-4-ylcarbamoyl)-3H-benzoimidazole-5-carboxylic acid methyl ester. The filtrate was concentrated to a volume of approx. 100 mL. Again the formed precipitate was filtered off. That procedure was repeated once again. The remaining filtrate was concentrated under reduced pressure and finally purified by flash-chromatography on silica gel using ethyl acetate as eluent. The product containing fractions were concentrated under vacuo to give pure (>98%) 1-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-2-(1-cyclopropyl-piperidin-4-ylcarbamoyl)-1H-benzoimidazole-5-carboxylic acid methyl ester as a light brown crystalline solid.

Aufarbeitung

  1. concentrationThe mixture was concentrated under reduced pressure
  2. filtrationThe next day the resulting precipitate was filtered off
  3. washwashed with 100 mL ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-539ee90945854d658e7a37df7d6e73b7
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07741341B2

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