Ethyl 3-{[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclobutane carboxylate → 3-{[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclo-butanecarboxylic acid

HRID 340797Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 340797
[C:1]1([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[CH:6]=[CH:5][C:4]([C:7]2[C:25]([F:26])=[CH:24][C:10]3[NH:11][C:12]([O:14][CH:15]4[CH2:18][CH:17]([C:19]([O:21]CC)=[O:20])[CH2:16]4)=[N:13][C:9]=3[C:8]=2[F:27])=[CH:3][CH:2]=1.O([Si](C)(C)C)[K]>C1COCC1.CCOC(C)=O>[C:1]1([C:28]2[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=2)[CH:2]=[CH:3][C:4]([C:7]2[C:25]([F:26])=[CH:24][C:10]3[NH:11][C:12]([O:14][CH:15]4[CH2:18][CH:17]([C:19]([OH:21])=[O:20])[CH2:16]4)=[N:13][C:9]=3[C:8]=2[F:27])=[CH:5][CH:6]=1

Komponenten

5

Edukt 2

HCID 67405225Ethyl 3-{[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclobutane carboxylateHCID 178504318HCID 178504318, Verbindung

Produkt 1

HCID 533723763-{[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclo-butanecarboxylic acid

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

Ethyl 3-{[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclobutane carboxylate (0.046 g, 0.102 mmol) was dissolved in 1 mL of THF and treated with KOTMS (0.039 g, 0.308 mmol). The reaction mixture was stirred at ambient temperature overnight, and then diluted with EtOAc and washed with 2 N HCl. The aqueous layer was further extracted with EtOAc, and the combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated to give the title compound. LCMS: calculated for C24H18F2N2O3 420.41, observed m/e 420.9 (M+H)+ (Rt 2.07/4 min). 1H NMR (500 MHz, d6-DMSO): δ7.77 (d, 2H), 7.73, (d, 2H), 7.55-7.47 (m, 4H), 7.39 (m, 1H), 7.15 (br, 1H), 5.23 (m, 1H), 2.82-2.70 (m, 2H), 2.32-2.25 (m, 2H), 1.98 (m, 1H).

Aufarbeitung

  1. washwashed with 2 N HCl
  2. extractionThe aqueous layer was further extracted with EtOAc
  3. washthe combined organic layers were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-248cfed5d7db445aab79a93c099c6a10
Quelldatensatz
uspto-grants-2014_11
Patentnummer
US08895596B2

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