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

HRID 1004369ノート

反応式

HRID 1004369 の反応式
C1(C)C=CC(S([CH2:10][N+:11]#[C-:12])(=O)=O)=CC=1.C(=O)([O-])[O-].[K+].[K+].CO.[CH3:22][C:23]1[CH:42]=[CH:41][C:40]([CH3:43])=[CH:39][C:24]=1[O:25][CH2:26][C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[C:33](=[N:36][O:37][CH3:38])[CH:34]=[O:35]>CCOCC>[CH3:38][O:37][N:36]=[C:33]([C:34]1[O:35][CH:12]=[N:11][CH:10]=1)[C:28]1[CH:29]=[CH:30][CH:31]=[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 538610512-(2,5-Dimethylphenoxymethyl)-alpha-methoxyiminophenylacetaldehyde

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-methoxyiminophenylacetaldehyde (0.30 g, 1 mmol), and the mixture was 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-dimethylphenoxymethyl)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-2fca4876e97c401387c2e9de040c7d48
出典データセット
uspto-grants-2000_04
特許番号
US06048885

反応ノート

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