Methanol → HCID 59127137, compound

HRID 1990052Notes

Reaction equation

HRID 1990052 reaction equation
[N:1]1([C:5]([C:7]2[N:8]=[CH:9][C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:21]=[C:22]([O:24][C@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[CH:23]=3)[C:17]([O:19]C)=[O:18])=[N:11][CH:12]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1.CO.[OH-].[Li+].O>C1COCC1>[N:1]1([C:5]([C:7]2[N:8]=[CH:9][C:10]([O:13][C:14]3[CH:15]=[C:16]([CH:21]=[C:22]([O:24][C@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[CH:23]=3)[C:17]([OH:19])=[O:18])=[N:11][CH:12]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 887MethanolHCID 962WaterHCID 3939Lithium Hydroxide3×HCID 59127154HCID 59127154, compound

Product 1

HCID 59127137HCID 59127137, compoundYield 88.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Methyl 3-{[5-(azetidin-1-ylcarbonyl)pyrazin-2-yl]oxy}-5-{[(1R)-1-methyl-2-(methyloxy)ethyl]oxy}benzoate (1.06 g, 2.6 mmol) was dissolved in THF (24 mL) and methanol (8 mL) then 1N lithium hydroxide solution (3.12 mL) added, followed by the dropwise addition of water (10 mL). The resultant solution was stirred for 3 hours at RT, a further portion of 1N lithium hydroxide solution (1.3 mL), the reaction stirred a further 2 hours, then further 1N lithium hydroxide solution (0.6 mL) added and stirring continued for another hour. The organics were removed by evaporation under reduced pressure, the aqueous solution was washed with diethyl ether (10 mL) then acidified with 2N hydrochloric acid and extracted with ethyl acetate (3×20 mL). The combined organics were washed with water (10 mL), brine (10 mL) and evaporated to dryness under reduced pressure to give the desired compound as a white solid (887 mg).

Workup

  1. waitcontinued for another hour
  2. customThe organics were removed by evaporation under reduced pressure
  3. washthe aqueous solution was washed with diethyl ether (10 mL)
  4. extractionextracted with ethyl acetate (3×20 mL)
  5. washThe combined organics were washed with water (10 mL), brine (10 mL)
  6. customevaporated to dryness under reduced pressure

Sources & evidence

ORD record
ord-8f41e8c8ad0842308debbd0a1ada26dc
Source dataset
uspto-grants-2010_01
Patent number
US07642263B2

Reaction notes

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