Ethanol → HCID 69421581, compound

HRID 350201Notes

Reaction equation

HRID 350201 reaction equation
[CH2:1]([O:3][C:4]1[C:8]([CH2:9][CH2:10][C:11]([O:13]CC)=[O:12])=[CH:7][N:6]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=2[O:23][CH2:24][C:25]2[N:26]=[C:27]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)[O:28][C:29]=2[CH3:30])[N:5]=1)[CH3:2].[OH-].[Na+].O1CCCC1.C(O)C>Cl>[CH2:1]([O:3][C:4]1[C:8]([CH2:9][CH2:10][C:11]([OH:13])=[O:12])=[CH:7][N:6]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=2[O:23][CH2:24][C:25]2[N:26]=[C:27]([C:31]3[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=3)[O:28][C:29]=2[CH3:30])[N:5]=1)[CH3:2]

Participants

6

Reactant 4

HCID 702EthanolHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 11569404HCID 11569404, compound

Product 1

HCID 69421581HCID 69421581, compoundYield 82%

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Procedure

A mixture of ethyl 3-[3-ethoxy-1-[2-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyl]-1H-pyrazol-4-yl]propionate (1.09 g), 1N aqueous sodium hydroxide solution (5 ml), tetrahydrofuran (10 ml), and ethanol (10 ml) was stirred at room temperature for two hours, diluted with 1 N hydrochloric acid (5 ml), and extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), and concentrated. The obtained colorless crystals were collected by filtration, and 3-[3-ethoxy-1-[2-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyl]-1H-pyrazol-4-yl]propionic acid (834 mg, yield: 82%) was obtained. This was recrystallized from ethanol-hexane. Melting point: 127–128° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated aqueous sodium chloride solution
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. filtrationThe obtained colorless crystals were collected by filtration

Sources & evidence

ORD record
ord-6705c474907c4158a0c443bddb8e8507
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Reaction notes

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