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 340797Notes

Reaction equation

HRID 340797 reaction equation
[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

Participants

5

Reactant 2

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

Product 1

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

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

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).

Workup

  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

Sources & evidence

ORD record
ord-248cfed5d7db445aab79a93c099c6a10
Source dataset
uspto-grants-2014_11
Patent number
US08895596B2

Reaction notes

Loading…