Methanol → 2-(2,5-dimethylphenoxymethyl)phenyl oxazol-5-yl ketone O-methyloxime

HRID 279460ノート

反応式

HRID 279460 の反応式
C1(C)C=CC(S([CH2:10][N+:11]#[C-:12])(=O)=O)=CC=1.[C:14](=[O:17])([O-])[O-].[K+].[K+].[CH3:20][OH:21].[CH3:22][C:23]1[CH:42]=[CH:41][C:40]([CH3:43])=[CH:39][C:24]=1[O:25][CH2:26][C:27]([CH:32]1[CH:37]=[CH:36][CH:35]=[CH:34][C:33]1=[NH:38])(OC)C=O>CCOCC>[CH3:20][O:21][N:38]=[C:33]([C:14]1[O:17][CH:12]=[N:11][CH:10]=1)[C:34]1[CH:35]=[CH:36][CH:37]=[CH:32][C:27]=1[CH2:26][O:25][C:24]1[CH:39]=[C:40]([CH3:43])[CH:41]=[CH:42][C:23]=1[CH3:22]

参加物

6

反応物 4

HCID 887MethanolHCID 11430Potassium CarbonateHCID 161915Tosylmethyl isocyanideHCID 867579072-(2,5-Dimethylphenoxymethyl)-alpha-methoxy-iminophenylacetaldehyde

生成物 1

HCID 544754822-(2,5-dimethylphenoxymethyl)phenyl oxazol-5-yl ketone O-methyloxime収率 44.6%

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒

実験手順

p-Toluenesulfonylmethylisocyanide (0.23 g, 1.2 mmol), potassium carbonate (0.18 g, 1.3 mmol) and methanol (2 ml) were added to 2-(2,5-dimethylphenoxymethyl)-α-methoxy-iminophenylacetaldehyde (0.30 g, 1 mmol), and the mixture stirred under reflux for 2 hours. After completion of the reaction, ether (100 ml) was added, and the mixture was washed with brine (80 ml) twice. The ether layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography (ethyl acetate/n-hexane) and recrystallized from ethyl acetate/n-hexane to give 2-(2,5-dimethylphenoxy-methyl)phenyl oxazol-5-yl ketone O-methyloxime (0.15 g, 44.6%) as colorless crystals.

後処理

  1. temperatureunder reflux for 2 hours
  2. additionwas added
  3. washthe mixture was washed with brine (80 ml) twice
  4. dry with materialThe ether layer was dried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel chromatography (ethyl acetate/n-hexane)
  7. customrecrystallized from ethyl acetate/n-hexane

出典と根拠

ORDレコード
ord-e9c62baa3625482da461529cac07e57b
出典データセット
uspto-grants-2002_03
特許番号
US06362212B1

反応ノート

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