Sodium hydride → HCID 19744869、化合物

HRID 2254244ノート

反応式

HRID 2254244 の反応式
[OH:1][C:2]1[CH:7]=[C:6]([O:8][CH3:9])[CH:5]=[C:4]([O:10][CH3:11])[C:3]=1[C:12](=[O:23])[CH2:13][CH2:14][C:15]1[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=1.[H-].[Na+].Br[CH2:27][C:28]([O:30][CH3:31])=[O:29]>CN(C)C=O>[CH3:9][O:8][C:6]1[CH:5]=[C:4]([O:10][CH3:11])[C:3]([C:12](=[O:23])[CH2:13][CH2:14][C:15]2[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=2)=[C:2]([O:1][CH2:27][C:28]([O:30][CH3:31])=[O:29])[CH:7]=1

参加物

5

反応物 3

HCID 24758Sodium hydrideHCID 60984Methyl bromoacetateHCID 2700571-(2-Hydroxy-4,6-dimethoxyphenyl)-3-(4-methoxyphenyl)-1-propanone

生成物 1

HCID 19744869HCID 19744869、化合物収率 87.1%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
0 °C

実験手順

Then, 30 ml of dimethylformamide was added to 5.0 g of 1-(2-hydroxy-4,6-dimethoxyphenyl)-3-(4-methoxyphenyl)-1-propanone and 420 mg of sodium hydride, and the mixture was stirred at 0° C. for 1 hour. Then, 2.6 g of methyl α-bromoacetate was added to the mixture, and the mixture was stirred at 0° C. for 1 hour and at room temperature for 1 hour to effect a reaction. After the reaction, the reaction mixture was extracted with ethyl acetate and filtered, and the solvent was removed from the filtrate by distillation. The obtained residue was subjected to the silica gel chromatography [230-400 mesh silica gel; eluting solvent=n-hexane/ethyl acetate (2/1)] and recrystallized from a mixed solvent of diethyl ether and n-hexane to obtain 5.3 g (yield=87.1%) of 1-(4,6-dimethoxy-2-methoxycarbonylmethoxyphenyl)-3-(4-methoxyphenyl)-1-propanone in the form of a colorless plate.

後処理

  1. stirringthe mixture was stirred at 0° C. for 1 hour and at room temperature for 1 hour
  2. customa reaction
  3. customAfter the reaction
  4. extractionthe reaction mixture was extracted with ethyl acetate
  5. filtrationfiltered
  6. customthe solvent was removed from the filtrate by distillation
  7. customrecrystallized from a mixed solvent of diethyl ether and n-hexane

出典と根拠

ORDレコード
ord-7f1154bf4ac546a4a79cc10d2332f544
出典データセット
uspto-grants-1993_08
特許番号
US05234951

反応ノート

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