Methanol → 4-(5-Fluoro-6-(3-fluoroazetidine-1-carbonyl)pyridin-3-yloxy)-2,2-dimethyl-2,3-dihydrobenzofuran-6-carboxylic acid

HRID 1177387Notes

Reaction equation

HRID 1177387 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([O:15][C:16]2[C:21]3[CH2:22][C:23]([CH3:26])([CH3:25])[O:24][C:20]=3[CH:19]=[C:18]([C:27]([O:29]C)=[O:28])[CH:17]=2)[CH:5]=[N:6][C:7]=1[C:8]([N:10]1[CH2:13][CH:12]([F:14])[CH2:11]1)=[O:9].CO.[OH-].[Na+]>C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([O:15][C:16]2[C:21]3[CH2:22][C:23]([CH3:26])([CH3:25])[O:24][C:20]=3[CH:19]=[C:18]([C:27]([OH:29])=[O:28])[CH:17]=2)[CH:5]=[N:6][C:7]=1[C:8]([N:10]1[CH2:11][CH:12]([F:14])[CH2:13]1)=[O:9]

Participants

5

Reactant 3

HCID 887MethanolHCID 14798Sodium HydroxideHCID 59559847Methyl 4-(5-fluoro-6-(3-fluoroazetidine-1-carbonyl)pyridin-3-yloxy)-2,2-dimethyl-2,3-dihydrobenzofuran-6-carboxylate

Product 1

HCID 595603264-(5-Fluoro-6-(3-fluoroazetidine-1-carbonyl)pyridin-3-yloxy)-2,2-dimethyl-2,3-dihydrobenzofuran-6-carboxylic acidYield 90%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of methyl 4-(5-fluoro-6-(3-fluoroazetidine-1-carbonyl)pyridin-3-yloxy)-2,2-dimethyl-2,3-dihydrobenzofuran-6-carboxylate (1.520 g, 3.633 mmol), in 10 mL THF and 10 mL MeOH was added 4.25 mL of 1N aqueous NaOH. The resulting solution was stirred at room temperature for 2 hr. The solvent was removed in vacuo. Water was added, and the mixture was washed with EtOAc. The aqueous layer was acidified with 1N HCl until pH˜1, and extracted with 3×EtOAc. The combined organic layer was dried over Na2SO4 and concentrated to give a white foam (1.32 g, 90% yield), which contains ˜15% impurity. LCMS for C20H18F2N2O5 m/z 405.20 (M+H)+.

Workup

  1. customThe solvent was removed in vacuo
  2. additionWater was added
  3. washthe mixture was washed with EtOAc
  4. extractionextracted with 3×EtOAc
  5. dry with materialThe combined organic layer was dried over Na2SO4
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-bdeaea7f833a41938bdde050dd163cb2
Source dataset
uspto-grants-2010_11
Patent number
US07842713B2

Reaction notes

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