Methyl bromoacetate → [[3-(Aminooxoacetyl)-2-ethyl-1-(phenylmethyl)-1H-indol-4-yl]amino]acetic acid methyl ester

HRID 2256267Notes

Reaction equation

Br[CH2:2][C:3]([O:5][CH3:6])=[O:4].[NH2:7][C:8]1[CH:16]=[CH:15][CH:14]=[C:13]2[C:9]=1[C:10]([C:26](=[O:30])[C:27]([NH2:29])=[O:28])=[C:11]([CH2:24][CH3:25])[N:12]2[CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>CN(C=O)C.O>[CH3:6][O:5][C:3](=[O:4])[CH2:2][NH:7][C:8]1[CH:16]=[CH:15][CH:14]=[C:13]2[C:9]=1[C:10]([C:26](=[O:30])[C:27]([NH2:29])=[O:28])=[C:11]([CH2:24][CH3:25])[N:12]2[CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

Conditions

Temperature: 60 °C

Procedure

Methyl bromoacetate (0.07 ml, 0.78 mmol) was added to 250 mg (0.78 mmol) of 4-Amino-2-Ethyl-α-oxo-1-(phenylmethyl)-1H-indole-3-Acetamide in 4 ml of DMF, stirred at 60° C. for 0.5 hour, and then at room temperature for 20 hours. The mixture was diluted with water and extracted with EtOAc. The EtOAC solution was washed with brine, dried over MgSO4, and evaporated in vacuo. The residue was chromatographed over silica gel eluting with Hexane/50 to 100% EtOAc to give 196 mg (64%) of [[3-(Aminooxoacetyl)-2-ethyl-1-(phenylmethyl)-1H-indol-4-yl]amino]acetic acid methyl ester melting at 188°-193° C.

Workup

waitat room temperature for 20 hours
extractionextracted with EtOAc
washThe EtOAC solution was washed with brine
dry with materialdried over MgSO4
customevaporated in vacuo
customThe residue was chromatographed over silica gel eluting with Hexane/50 to 100% EtOAc

Sources & evidence

ORD record: ord-2e85c523833e474d8a87ea1b21e2c8a6
Source dataset: uspto-grants-1997_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05654326

Reaction notes

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