Ethyl Acetate → HCID 22144808, compound
Reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[OH:10].C(=O)([O-])[O-].[K+].[K+].[CH2:17]([O:19][CH:20]([O:23][CH2:24][CH3:25])[CH2:21]Br)[CH3:18].C(OCC)(=O)C>CN(C)C=O.[OH-].[Na+]>[CH2:17]([O:19][CH:20]([O:23][CH2:24][CH3:25])[CH2:21][O:10][C:3]1[CH:4]=[C:5]([O:8][CH3:9])[CH:6]=[CH:7][C:2]=1[Br:1])[CH3:18]Participants
7
Conditions
- Temperature
- 142 °C
Procedure
A mixture of 16.0 gm (78.8 mMol) 2-bromo-5-methoxyphenol, 10.9 gm (78.8 mMol) potassium carbonate, and 15.5 gm (78.8 mMol) bromoacetaldehyde diethyl acetal in 300 mL dimethylformamide was heated at 142° C. for 16 hours. The reaction mixture was then cooled to room temperature and diluted with 100 mL 2N sodium hydroxide followed by 500 mL ethyl acetate. This mixture was washed twice with 1 L of water. The combined aqueous washes were extracted twice with 300 mL portions of ethyl acetate. All organic phases were combined, washed with 1 L of water, washed with 1 L of saturated aqueous sodium chloride, dried over magnesium sulfate and concentrated under reduced pressure to provide the desired compound as a dark amber oil.
Workup
- temperatureThe reaction mixture was then cooled to room temperature
- washThis mixture was washed twice with 1 L of water
- extractionThe combined aqueous washes were extracted twice with 300 mL portions of ethyl acetate
- washwashed with 1 L of water
- washwashed with 1 L of saturated aqueous sodium chloride
- dry with materialdried over magnesium sulfate
- concentrationconcentrated under reduced pressure
Sources & evidence
- ORD record
- ord-ababd1c1dcf54f7fb4f01157a1dce25d
- Source dataset
- uspto-grants-2005_04
- Patent number
- US06881733B1
Reaction notes
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