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Hydrochloric Acid → 7-(4-ethoxy-3-fluorophenyl)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylic acid

HRID 586874
Notes
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Reaction equation

HRID 586874 reaction equation
[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH:11]=[CH:12][C:13]3[N:19]([CH:20]=[O:21])[CH2:18][CH2:17][C:16]([C:22]([O:24]C)=[O:23])=[CH:15][C:14]=3[CH:26]=2)=[CH:6][C:5]=1[F:27])[CH3:2].[OH-].[Na+].Cl>C1COCC1.C(O)C>[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH:11]=[CH:12][C:13]3[N:19]([CH:20]=[O:21])[CH2:18][CH2:17][C:16]([C:22]([OH:24])=[O:23])=[CH:15][C:14]=3[CH:26]=2)=[CH:6][C:5]=1[F:27])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 22329092methyl 7-(4-ethoxy-3-fluorophenyl)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylate

Product 1

HCID 223291977-(4-ethoxy-3-fluorophenyl)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylic acidYield 102.5%

Reagents, catalysts & solvents 2

HCID 702
Ethanol
Solvent
HCID 8028TetrahydrofuranSolvent

Procedure

In a mixture of THF and ethanol (1:1, v/v, 20.0 ml) was dissolved methyl 7-(4-ethoxy-3-fluorophenyl)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylate (441 mg). To the solution was added 1N sodium hydroxide solution (12.0 ml), and the mixture was stirred at room temperature for 16 hours. The mixture was a little concentrated, and to the residue was added 1N hydrochloric acid to convert weakly acidic solution. The mixture was extracted with ethyl acetate, and the organic layer was washed with water and saturated brine, and dried with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane to give 7-(4-ethoxy-3-fluorophenyl)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylic acid (435 mg) as white crystals.

Workup

  1. extractionThe mixture was extracted with ethyl acetate
  2. washthe organic layer was washed with water and saturated brine
  3. dry with materialdried with anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customto give crystals, which
  6. washwere washed with ethyl acetate/hexane

Sources & evidence

ORD record
ord-1969a0ec1d834aa893f57edfd1c32a12
Source dataset
uspto-grants-2005_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06936602B1

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes