Hydrochloric Acid → 3-[4-Phenyl-1-[4-[3-(2-pyrazinyl)benzyloxy]benzyl]-3-pyrrolyl]propionic acid

HRID 350062Notes

Reaction equation

HRID 350062 reaction equation
[C:1]1([C:7]2[C:8]([CH2:33][CH2:34][C:35]([O:37]CC)=[O:36])=[CH:9][N:10]([CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH2:20][C:21]4[CH:26]=[CH:25][CH:24]=[C:23]([C:27]5[CH:32]=[N:31][CH:30]=[CH:29][N:28]=5)[CH:22]=4)=[CH:15][CH:14]=3)[CH:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[OH-].[Na+].O1CCCC1.Cl>C(O)C>[C:1]1([C:7]2[C:8]([CH2:33][CH2:34][C:35]([OH:37])=[O:36])=[CH:9][N:10]([CH2:12][C:13]3[CH:14]=[CH:15][C:16]([O:19][CH2:20][C:21]4[CH:26]=[CH:25][CH:24]=[C:23]([C:27]5[CH:32]=[N:31][CH:30]=[CH:29][N:28]=5)[CH:22]=4)=[CH:17][CH:18]=3)[CH:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 69423853Ethyl 3-[4-phenyl-1-[4-[3-(2-pyrazinyl)benzyloxy]benzyl]-3-pyrrolyl]propionate

Product 1

HCID 694206943-[4-Phenyl-1-[4-[3-(2-pyrazinyl)benzyloxy]benzyl]-3-pyrrolyl]propionic acidYield 77%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of ethyl 3-[4-phenyl-1-[4-[3-(2-pyrazinyl)benzyloxy]benzyl]-3-pyrrolyl]propionate (647 mg), 1N aqueous sodium hydroxide solution (2.5 ml), tetrahydrofuran (5 ml), and ethanol (5 ml) was stirred at room temperature overnight, and 1N hydrochloric acid (2.5 ml) was added to the mixture, which was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), then concentrated. The colorless crystals obtained were collected by filtration to yield 3-[4-phenyl-1-[4-[3-(2-pyrazinyl)benzyloxy]benzyl]-3-pyrrolyl]propionic acid (470 mg, yield: 77%). This was recrystallized from ethyl acetate-hexane. Melting point: 91–92° C.

Workup

  1. extractionwas 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. customThe colorless crystals obtained
  6. filtrationwere collected by filtration

Sources & evidence

ORD record
ord-540b15fe359a43a0b0a1d040fdb798f0
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Reaction notes

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