Citric Acid → 3-(4-{[(2',6'-Dimethylbiphenyl-3-yl)methyl]amino}phenyl)propanoic acid

HRID 508020Notes

Reaction equation

HRID 508020 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][NH:16][C:17]2[CH:22]=[CH:21][C:20]([CH2:23][CH2:24][C:25]([O:27]C)=[O:26])=[CH:19][CH:18]=2)[CH:10]=1.[OH-].[Na+].O.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CO.O1CCCC1>[CH3:8][C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([CH3:1])[C:3]=1[C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][NH:16][C:17]2[CH:18]=[CH:19][C:20]([CH2:23][CH2:24][C:25]([OH:27])=[O:26])=[CH:21][CH:22]=2)[CH:10]=1

Participants

7

Reactant 4

HCID 311Citric AcidHCID 962WaterHCID 14798Sodium HydroxideHCID 23157312Methyl 3-(4-{[(2',6'-dimethylbiphenyl-3-yl)methyl]amino}phenyl)propanoate

Product 1

HCID 231571913-(4-{[(2',6'-Dimethylbiphenyl-3-yl)methyl]amino}phenyl)propanoic acidYield 57%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of methyl 3-(4-{[(2′,6′-dimethylbiphenyl-3-yl)methyl]amino}phenyl)propanoate (0.486 g, 1.30 mmol) in a mixture of methanol (6 mL) and tetrahydrofuran (6 mL) was added 2 M aqueous sodium hydroxide solution (2 mL), and the mixture was stirred at room temperature for 21 hr. Water was added to the reaction mixture, and the mixture was weakly acidified with 10% aqueous citric acid solution and extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (30% ethyl acetate/hexane-ethyl acetate) and recrystallized from ethyl acetate-hexane to give the title compound (0.266 g, yield 57%) as colorless needle crystals.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (30% ethyl acetate/hexane-ethyl acetate)
  6. customrecrystallized from ethyl acetate-hexane

Sources & evidence

ORD record
ord-88e1a00385ba4a5080ad89c5eae47735
Source dataset
uspto-grants-2010_08
Patent number
US07786165B2

Reaction notes

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