Anisole → 2-hydroxyphenyl 2-oxazolin-2-yl ketone O-methyloxime

HRID 279464Notes

Reaction equation

HRID 279464 reaction equation
C1(OC)C=CC=CC=1.[Cl-].[Al+3].[Cl-].[Cl-].[CH3:13][O:14][N:15]=[C:16]([C:32]1[O:33][CH2:34][CH2:35][N:36]=1)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[O:23]CC1C=CC(Cl)=CC=1>O>[CH3:13][O:14][N:15]=[C:16]([C:32]1[O:33][CH2:34][CH2:35][N:36]=1)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[OH:23]

Participants

5

Reactant 3

HCID 7519AnisoleHCID 6451240Aluminum(III) ChlorideHCID 54276884HCID 54276884, compound

Product 1

HCID 1361714202-hydroxyphenyl 2-oxazolin-2-yl ketone O-methyloximeYield 56%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Anisole (152 ml) and aluminium chloride (16.3 g, 122 mmol) were added to 2-(4-chlorobenzyloxy)phenyl 2-oxazolin-2-yl ketone O-methyloxime (19.08 g, 55.3 mmol), and the mixture was stirred under ice-cooling for 1.5 hours. After completion of the reaction, water (100 ml) was added, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography (ethyl acetate/n-hexane) to give 2-hydroxyphenyl 2-oxazolin-2-yl ketone O-methyloxime (6.82 g, 56.0%) as an oil.

Workup

  1. temperaturecooling for 1.5 hours
  2. additionwas added
  3. extractionthe mixture was extracted with ethyl acetate
  4. dry with materialThe ethyl acetate layer was dried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel chromatography (ethyl acetate/n-hexane)

Sources & evidence

ORD record
ord-1ee4dfd95a9146d7aa9c1528aef80da1
Source dataset
uspto-grants-2002_03
Patent number
US06362212B1

Reaction notes

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