Sodium Hydroxide → 4-(1-Benzyl-3-carbamoylmethyl-2-ethyl-1H-indol-5-yloxy)-butyric acid
Reaction equation
C([O:3][C:4](=[O:31])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[N:14]([CH2:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)[C:13]([CH2:25][CH3:26])=[C:12]2[CH2:27][C:28]([NH2:30])=[O:29])C.[OH-].[Na+]>CCO.O>[NH2:30][C:28](=[O:29])[CH2:27][C:12]1[C:11]2[C:15](=[CH:16][CH:17]=[C:9]([O:8][CH2:7][CH2:6][CH2:5][C:4]([OH:31])=[O:3])[CH:10]=2)[N:14]([CH2:18][C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=2)[C:13]=1[CH2:25][CH3:26]Participants
5
Reactant 2
Product 1
Reagents, catalysts & solvents 2
Procedure
A mixture of 200 mg (0.5 mmol) of [4-[[3-(2-amino-2-oxoethyl)-2-ethyl-1-(phenylmethyl)-1-H-indol-5-yl]oxy]butanoic acid ethyl ester and 4 mL of 1N NaOH in 10 mL of EtOH was stirred for 1.5 hours, diluted with water and extracted with EtOAc. The aqueous layer was made acidic to pH 5 with 1N HCl, extracted with EtOAc, the EtOAc solution washed with brine and dried (MgSO4). The solvent was evaporated at reduced pressure, the residue stirred with ether/MeOH and the insoluble material filtered to give 120 mg (61% yield) of [4-[[3-(2-amino-2-oxoethyl)-2-ethyl-1-(phenylmethyl)-1-H-indol-5-yl]oxy]butanoic acid, mp, 196°-199° C.
Workup
- extractionextracted with EtOAc
- extractionextracted with EtOAc
- washthe EtOAc solution washed with brine
- dry with materialdried (MgSO4)
- customThe solvent was evaporated at reduced pressure
- stirringthe residue stirred with ether/MeOH
- filtrationthe insoluble material filtered
Sources & evidence
- ORD record
- ord-83ef08c8510f457aa7c8f681f891f0aa
- Source dataset
- uspto-grants-1997_11
- Patent number
- US05684034
Reaction notes
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