Methyl acetoacetate → 3-Furancarboxylic acid, 2,5-dimethyl-, methyl ester

HRID 1706339

反応式

HRID 1706339 の反応式
[C:1]([O:4][CH:5]([CH3:8])[CH:6]=O)(=O)[CH3:2].[C:9]([O:15][CH3:16])(=[O:14])[CH2:10]C(C)=O>[Fe].CO>[CH3:16][O:15][C:9]([C:10]1[CH:6]=[C:5]([CH3:8])[O:4][C:1]=1[CH3:2])=[O:14]

参加物

5

反応物 2

HCID 7757Methyl acetoacetateHCID 907282-(Acetyloxy)propanal

生成物 1

HCID 802483-Furancarboxylic acid, 2,5-dimethyl-, methyl ester

試薬・触媒・溶媒 2

HCID 23925Iron触媒HCID 887Methanol溶媒

実験手順

40 parts by weight of iron-III chloride and 136 parts by weight of 85 percent strength α-acetoxypropionaldehyde are added successively to a solution of 150 parts by weight of methyl acetoacetate in 120 parts by weight of methanol. The mixture, which becomes warm, is then refluxed for 2 hours. When it has cooled, the reaction solution is washed with water and distilled. 127 g of 2,5-dimethylfuran-3-carboxylic acid methyl ester are obtained.

後処理

  1. temperatureThe mixture, which becomes warm
  2. temperatureis then refluxed for 2 hours
  3. temperatureWhen it has cooled
  4. washthe reaction solution is washed with water
  5. distillationdistilled

出典と根拠

ORDレコード
ord-a86d7762caed427391b66ee59855b844
出典データセット
uspto-grants-1980_06
特許番号
US04207243

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