Dimethylformamide → Ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenoxy]acetate

HRID 749620ノート

反応式

HRID 749620 の反応式
CN(C)C=O.[OH:6][CH:7]([C:13]1[C:18]([CH3:19])=[CH:17][C:16]([OH:20])=[C:15]([CH3:21])[CH:14]=1)[CH:8]([O:11][CH3:12])[O:9][CH3:10].C(=O)([O-])[O-].[K+].[K+].Cl[CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31]>C(OCC)(=O)C>[OH:6][CH:7]([C:13]1[C:18]([CH3:19])=[CH:17][C:16]([O:20][CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31])=[C:15]([CH3:21])[CH:14]=1)[CH:8]([O:9][CH3:10])[O:11][CH3:12]

参加物

6

反応物 4

HCID 6228DimethylformamideHCID 7751Ethyl chloroacetateHCID 11430Potassium CarbonateHCID 117758724-(1-Hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenol

生成物 1

HCID 10470761Ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenoxy]acetate収率 77.1%

試薬・触媒・溶媒 1

HCID 8857Ethyl Acetate溶媒

実験手順

To N,N-dimethylformamide (81 g) were added 4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenol (20.0 g), potassium carbonate (15.8 g) and ethyl chloroacetate (12.4 g) at room temperature with stirring. The mixture was stirred at room temperature for an hour, and then stirred at 71° C. for 2 hours. The reaction mixture was diluted with ethyl acetate, washed with water and brine, and dried over anhydrous sodium sulfate. The organic layer was concentrated under reduced pressure, and a mixture of ethyl acetate and hexane was added to the residue. The precipitated crystals were collected by filtration to give ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethyl-phenoxy]acetate (21.3 g).

後処理

  1. stirringThe mixture was stirred at room temperature for an hour
  2. stirringstirred at 71° C. for 2 hours
  3. washwashed with water and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationThe organic layer was concentrated under reduced pressure
  6. additiona mixture of ethyl acetate and hexane
  7. additionwas added to the residue
  8. filtrationThe precipitated crystals were collected by filtration

出典と根拠

ORDレコード
ord-9cdf8965adf04bcb8459a74fda838810
出典データセット
uspto-grants-2008_07
特許番号
US07402692B2

反応ノート

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