Acetic Acid → HCID 22096732, compound
Reaction equation
[CH2:1]1[O:3][CH2:2]1.[CH3:4][O:5][C:6]1[CH:7]=[C:8]([CH:13]=[CH:14][C:15]=1[NH2:16])[C:9]([O:11][CH3:12])=[O:10].[C:17](O)(=[O:19])[CH3:18]>>[CH3:4][O:5][C:6]1[CH:7]=[C:8]([CH:13]=[CH:14][C:15]=1[N:16]([CH2:2][CH2:1][OH:3])[CH2:18][CH2:17][OH:19])[C:9]([O:11][CH3:12])=[O:10]Participants
Procedure
Ethylene oxide (16.5 ml; 333 mmol) was added dropwise under ice cooling to a solution of 3.9 g (22 mmol) of methyl 3-methoxy-4-aminobenzoate in 33 ml of a 30% acetic acid suspension. The thus-obtained was stirred for 1 hour and then stirred at room temperature for 2 nights. The mixture was then stirred for 2 hours while bubbling nitrogen gas therethrough. Sodium hydrogencarbonate was added to the mixture to neutralized the same. Sodium chloride was then added until saturation, followed by extraction with ethyl acetate. The extract was dried over magnesium sulfate and the solvent was distilled out under reduced pressure. The residue was purified by chromatography on a silica gel column (methylene chloride/ethyl acetate=1:1→0:1), whereby 3.1 g of a pale yellow oil were obtained (yield: 54%).
Workup
- stirringstirred at room temperature for 2 nights
- stirringThe mixture was then stirred for 2 hours
- customwhile bubbling nitrogen gas
- additionSodium hydrogencarbonate was added to the mixture
- additionSodium chloride was then added until saturation
- extractionfollowed by extraction with ethyl acetate
- dry with materialThe extract was dried over magnesium sulfate
- distillationthe solvent was distilled out under reduced pressure
- customThe residue was purified by chromatography on a silica gel column (methylene chloride/ethyl acetate=1:1→0:1)
Sources & evidence
- ORD record
- ord-40fe574e9c60482cb228f936896b6c41
- Source dataset
- uspto-grants-1998_12
- Patent number
- US05852011
Reaction notes
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