Methanol → 3-(2-(1-Benzothiophen-5-yl)ethoxy)propionic acid

HRID 553220ノート

反応式

HRID 553220 の反応式
CO.[S:3]1[C:7]2[CH:8]=[CH:9][C:10]([CH2:12][CH2:13][O:14][CH2:15][CH2:16][C:17]([O:19]CCCC)=[O:18])=[CH:11][C:6]=2[CH:5]=[CH:4]1.[OH-].[K+]>O>[S:3]1[C:7]2[CH:8]=[CH:9][C:10]([CH2:12][CH2:13][O:14][CH2:15][CH2:16][C:17]([OH:19])=[O:18])=[CH:11][C:6]=2[CH:5]=[CH:4]1

参加物

5

反応物 3

HCID 887MethanolHCID 14797Potassium HydroxideHCID 57615037Butyl 3-(2-(1-benzothiophen-5-yl)ethoxy)propionate

生成物 1

HCID 219900803-(2-(1-Benzothiophen-5-yl)ethoxy)propionic acid収率 88.1%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

To methanol (5 mL) solution of 5.00 g of butyl 3-(2-(1-benzothiophen-5-yl)ethoxy)propionate was added water (5 mL) solution of 1.10 g of potassium hydroxide, which was then stirred at room temperature for 2 hours. This reaction mixture was distilled off under reduced pressure, to which were added 30 mL of toluene and 30 mL of water. The pH was adjusted to 1.6 with 3.5 mL of 6 mol/L hydrochloric acid. The organic layer was separated, followed by distilling off the solvent under reduced pressure. Thereto were added 15 mL of toluene and 30 mL of cyclohexane. The precipitate was collected by filtration to provide 3.60 g of 3-(2-(1-benzothiophen-5-yl)ethoxy)propionic acid as white solid form.

後処理

  1. distillationThis reaction mixture was distilled off under reduced pressure, to which
  2. additionwere added 30 mL of toluene and 30 mL of water
  3. customThe organic layer was separated
  4. distillationby distilling off the solvent under reduced pressure
  5. additionThereto were added 15 mL of toluene and 30 mL of cyclohexane
  6. filtrationThe precipitate was collected by filtration

出典と根拠

ORDレコード
ord-0ffbf56faad747fba09f323556e82e85
出典データセット
uspto-grants-2011_05
特許番号
US07951963B2

反応ノート

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