Lithium hydroxide, monohydrate → 3-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-5-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)benzoic acid

HRID 1990046Notes

Reaction equation

HRID 1990046 reaction equation
O.[OH-].[Li+].[N:4]1([C:8]([C:10]2[N:11]=[CH:12][C:13]([O:16][C:17]3[CH:18]=[C:19]([CH:24]=[C:25]([O:27][C@@H:28]([CH3:34])[CH2:29][O:30][CH:31]([F:33])[F:32])[CH:26]=3)[C:20]([O:22]C)=[O:21])=[N:14][CH:15]=2)=[O:9])[CH2:7][CH2:6][CH2:5]1>O.C1COCC1>[N:4]1([C:8]([C:10]2[N:11]=[CH:12][C:13]([O:16][C:17]3[CH:18]=[C:19]([CH:24]=[C:25]([O:27][C@@H:28]([CH3:34])[CH2:29][O:30][CH:31]([F:32])[F:33])[CH:26]=3)[C:20]([OH:22])=[O:21])=[N:14][CH:15]=2)=[O:9])[CH2:5][CH2:6][CH2:7]1

Participants

5

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 53629696methyl 3-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-5-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)benzoate

Product 1

HCID 591271903-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-5-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)benzoic acidYield 81.9%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

Lithium hydroxide monohydrate (48 mg, 1.13 mmol) in water (5 mL) was added to a solution of methyl 3-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-5-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)benzoate (0.33 g, 0.75 mmol) in THF (10 mL) and stirred at RT for 20 hours. The THF was removed in vacuo and the aqueous layer washed with ethyl acetate (50 mL) to remove any impurities. The aqueous layer was acidified and extracted into ethyl acetate (2×50 mL), washed with brine, dried (MgSO4), filtered and the solvent removed in vacuo to give the desired compound as a white foam (0.26 g). m/z 424 (M+H)+

Workup

  1. customThe THF was removed in vacuo
  2. washthe aqueous layer washed with ethyl acetate (50 mL)
  3. customto remove any impurities
  4. extractionextracted into ethyl acetate (2×50 mL)
  5. washwashed with brine
  6. dry with materialdried (MgSO4)
  7. filtrationfiltered
  8. customthe solvent removed in vacuo

Sources & evidence

ORD record
ord-e23475adee85413896d8d6a8e379241b
Source dataset
uspto-grants-2010_01
Patent number
US07642263B2

Reaction notes

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