Ethanol → HCID 69421605, compound

HRID 350196Notes

Reaction equation

HRID 350196 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][C:20]([O:23][CH:24]3[CH2:29][CH2:28][N:27]([C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][N:31]=4)[CH2:26][CH2:25]3)=[CH:19][CH:18]=2)[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:18]=[CH:19][C:20]([O:23][CH:24]3[CH2:29][CH2:28][N:27]([C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][N:31]=4)[CH2:26][CH2:25]3)=[CH:21][CH:22]=2)[N:5]=1)[CH3:2]

Participants

6

Reactant 4

HCID 702EthanolHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 69427117HCID 69427117, compound

Product 1

HCID 69421605HCID 69421605, compoundYield 72.5%

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Procedure

A mixture of ethyl 3-[3-ethoxy-1-[4-[1-(2-pyridyl)piperidine-4-yloxy]benzyl]-1H-pyrazole-4-yl]propionate (598 mg), 1 N aqueous sodium hydroxide solution (2.5 ml), tetrahydrofuran (5 ml), and ethanol (5 ml) was stirred at room temperature for 3 hours, diluted with 1 N hydrochloric acid (2.5 ml), and extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), and concentrated. The obtained crystals were collected by filtration, and 3-[3-ethoxy-1-[4-[1-(2-pyridyl)piperidine-4-yloxy]benzyl]-1H-pyrazol-4-yl]propionic acid (408 mg, yield: 72%) was obtained. This was recrystallized from ethanol-hexane. Melting point: 142–143° 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 crystals were collected by filtration

Sources & evidence

ORD record
ord-0afdc3cdf6e745e8b17219be3a53f9ef
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Reaction notes

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