Toluene → (2E)-2-methoxyimino-N-methyl-2-(2-phenoxyphenyl)acetamide

HRID 1779732Notes

Reaction equation

[OH-].[K+].[C:3]1(C)C=CC=CC=1.[O:10]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1/[C:23](=[N:27]\[O:28][CH3:29])/[C:24]([NH2:26])=[O:25])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.S(OC)(OC)(=O)=O>O>[O:10]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1/[C:23](=[N:27]\[O:28][CH3:29])/[C:24]([NH:26][CH3:3])=[O:25])[C:11]1[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=1

Participants

Conditions

Temperature: 50 °C

Procedure

85% Potassium hydroxide (0.79 g, 12.0 mmol) and toluene (20 ml) were added to (E)-2-(2-phenoxyphenyl)-2-methoxyiminoacetamide (2.70 g, 10.0 mmol) and dissolved by heating to 50° C. After 10 minutes, the solution was concentrated under reduced pressure. Toluene (20 ml) was added to the residue, and dimethyl sulfate (1.32 ml, 14.0 mmol) was added dropwise under ice-cooling and reacted at room temperature for 1 hour. After completion of the reaction, water (100 ml) was added. The mixture was extracted with ether (150 ml), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (ethyl acetate/n-hexane) to give (E)-2-(2-phenoxyphenyl)-2-methoxyimino-N-methylacetamide (2.33 g, Yield: 82.1%).

Workup

dissolutiondissolved
concentrationthe solution was concentrated under reduced pressure
additionwas added dropwise under ice-
temperaturecooling
customreacted at room temperature for 1 hour
additionwas added
extractionThe mixture was extracted with ether (150 ml)
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure
customThe resulting residue was purified by silica gel chromatography (ethyl acetate/n-hexane)

Sources & evidence

ORD record: ord-6e111370be27493daf09a05e07dede35
Source dataset: uspto-grants-1997_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05627284

Reaction notes

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