Hydrochloric Acid → 3-[3-ethoxy-1-[5-(5-methyl-2-phenyl-4-oxazolylmethoxy)-3-pyridylmethyl]-1H-pyrazol-4-yl]propionic acid

HRID 350214Notes

Reaction equation

HRID 350214 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:18]=[N:19][CH:20]=[C:21]([O:23][CH2:24][C:25]3[N:26]=[C:27]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)[O:28][C:29]=3[CH3:30])[CH:22]=2)[N:5]=1)[CH3:2].[OH-].[Na+].O1CCCC1.Cl>C(O)C>[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:18]=[N:19][CH:20]=[C:21]([O:23][CH2:24][C:25]3[N:26]=[C:27]([C:31]4[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=4)[O:28][C:29]=3[CH3:30])[CH:22]=2)[N:5]=1)[CH3:2]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 69421736ethyl 3-[3-ethoxy-1-[5-(5-methyl-2-phenyl-4-oxazolylmethoxy)-3-pyridylmethyl]-1H-pyrazol-4-yl]propionate

Product 1

HCID 694217603-[3-ethoxy-1-[5-(5-methyl-2-phenyl-4-oxazolylmethoxy)-3-pyridylmethyl]-1H-pyrazol-4-yl]propionic acidYield 92.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

After a mixture of ethyl 3-[3-ethoxy-1-[5-(5-methyl-2-phenyl-4-oxazolylmethoxy)-3-pyridylmethyl]-1H-pyrazol-4-yl]propionate (613 mg), 1N aqueous sodium hydroxide solution (3 ml), tetrahydrofuran (6 ml) and ethanol (6 ml) was stirred at room temperature for 3 hours, 1N hydrochloric acid (3 ml) was added to the mixture, and then the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4) and concentrated. The resulting colorless crystals were collected by filtration to obtain 3-[3-ethoxy-1-[5-(5-methyl-2-phenyl-4-oxazolylmethoxy)-3-pyridylmethyl]-1H-pyrazol-4-yl]propionic acid (532 mg, yield: 92%). This was recrystallized from ethanol-hexane. Melting point: 133–134° C.

Workup

  1. extractionthe mixture was extracted 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 resulting colorless crystals were collected by filtration

Sources & evidence

ORD record
ord-2b01a9d9e7fd4592b8240fff250dff6b
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Reaction notes

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