Methanol → Methyl 3,5-dimethoxyphenylacetate

HRID 2274170

反応式

HRID 2274170 の反応式
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:11][C:12]([OH:14])=[O:13])[CH:6]=[C:7]([O:9][CH3:10])[CH:8]=1.S(Cl)(Cl)=O.[CH3:19]O>C(=O)(O)[O-].[Na+]>[CH3:10][O:9][C:7]1[CH:6]=[C:5]([CH2:11][C:12]([O:14][CH3:19])=[O:13])[CH:4]=[C:3]([O:2][CH3:1])[CH:8]=1

参加物

5

反応物 3

HCID 887MethanolHCID 24386Thionyl ChlorideHCID 138316(3,5-Dimethoxyphenyl)acetic acid

生成物 1

HCID 592191Methyl 3,5-dimethoxyphenylacetate

試薬・触媒・溶媒 1

HCID 516892Sodium Bicarbonate溶媒

実験手順

To a solution of 2-(3,5-dimethoxyphenyl)acetic acid (5) (600 mg, 3.06 mmol) in MeOH (30 mL) was added dropwise thionyl chloride (3 mL) at 0° C., and the reaction mixture was stirred at room temperature overnight. The reaction was monitored by liquid chromatography-mass spectrometry (LCMS). The mixture was diluted with saturated sodium bicarbonate (aq., 20 mL) and extracted by EtOAc (3×20 mL). The combined organic layers were washed with water and brine, dried over sodium sulfate, filtered and concentrated to give methyl 2-(3,5-dimethoxyphenyl)acetate (crude, 700 mg) as a yellow oil. MS (ES+) C11H14O4 requires: 210. Found: 211 [M+H]+.

後処理

  1. extractionextracted by EtOAc (3×20 mL)
  2. washThe combined organic layers were washed with water and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-b9f937ed213f49329edfee4ca3022e62
出典データセット
uspto-grants-2015_09
特許番号
US09126951B2

関連ノート

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