Ethyl 2-({[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}methyl)cyclopropanecarboxylate → 2-({[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}methyl)cyclopropanecarboxylic acid

HRID 340801Notes

Reaction equation

HRID 340801 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][CH2:15][CH:16]4[CH2:18][CH:17]4[C:19]([O:21]CC)=[O:20])=[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][CH2:15][CH:16]4[CH2:18][CH:17]4[C:19]([OH:21])=[O:20])=[N:13][C:9]=3[C:8]=2[F:27])=[CH:5][CH:6]=1

Participants

5

Reactant 2

HCID 67406772Ethyl 2-({[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}methyl)cyclopropanecarboxylateHCID 178504318HCID 178504318, compound

Product 1

HCID 533723792-({[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}methyl)cyclopropanecarboxylic acid

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

Ethyl 2-({[5-(biphenyl-4-yl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}methyl)cyclopropanecarboxylate (0.046 g, 0.102 mmol) was dissolved in 1 mL of THF and treated with KOTMS (0.037 g, 0.288 mmol). The reaction mixture was stirred at ambient temperature overnight, and then diluted with EtOAc and washed with 2 N HCl. The acidic aqueous layer was separated and further extracted with EtOAc. 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 2.21/4 min). 1H NMR (500 MHz, CD3OD): δ7.73-7.64 (m, 4H), 7.51 (d, 2H), 7.48-7.41 (m, 2H), 7.35 (m, 1H), 7.03 (d, 1H), 4.55 (dd, 1H), 4.29 (dd, 1H), 1.95 (m, 1H), 1.75 (m, 1H), 1.28 (m, 1H), 1.08 (m, 1H).

Workup

  1. washwashed with 2 N HCl
  2. customThe acidic aqueous layer was separated
  3. extractionfurther extracted with EtOAc
  4. washThe combined organic layers were washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-009e28e3de9144418e89fb33742dedb0
Source dataset
uspto-grants-2014_11
Patent number
US08895596B2

Reaction notes

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