Sodium Hydroxide → 3-Cyclopentyl-2-[3-fluoro-4-(5-methyl-tetrazol-1-yl)-phenyl]-propionic acid

HRID 841203ノート

反応式

HRID 841203 の反応式
C[O:2][C:3](=[O:24])[CH:4]([C:11]1[CH:16]=[CH:15][C:14]([N:17]2[C:21]([CH3:22])=[N:20][N:19]=[N:18]2)=[C:13]([F:23])[CH:12]=1)[CH2:5][CH:6]1[CH2:10][CH2:9][CH2:8][CH2:7]1.[OH-].[Na+]>C(O)C>[CH:6]1([CH2:5][CH:4]([C:11]2[CH:16]=[CH:15][C:14]([N:17]3[C:21]([CH3:22])=[N:20][N:19]=[N:18]3)=[C:13]([F:23])[CH:12]=2)[C:3]([OH:24])=[O:2])[CH2:10][CH2:9][CH2:8][CH2:7]1

参加物

4

反応物 2

HCID 14798Sodium HydroxideHCID 696918543-Cyclopentyl-2-[3-fluoro-4-(5-methyl-tetrazol-1-yl)-phenyl]-propionic acid methyl ester

生成物 1

HCID 120196453-Cyclopentyl-2-[3-fluoro-4-(5-methyl-tetrazol-1-yl)-phenyl]-propionic acid収率 94.2%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

反応条件

温度
47.5 °C

実験手順

A solution of 3-cyclopentyl-2-[3-fluoro-4-(5-methyl-tetrazol-1-yl)-phenyl]-propionic acid methyl ester (400 mg, 1.2 mmol) in ethanol (8 mL) was treated with a 1N aqueous sodium hydroxide solution (2.5 mL). The solution was heated at 45-50° C. for 5 h, at which time, thin layer chromatography analysis of the reaction mixture indicated the absence of starting material. The reaction mixture was concentrated in vacuo to remove ethanol. The residue was diluted with water (40 mL) and extracted with diethyl ether (1×50 mL) to remove any neutral impurities. The aqueous layer was then acidified with a 1N aqueous hydrochloric acid solution, and the resulting acid was extracted into ethyl acetate (2×50 mL). The combined organic layers were washed with a saturated aqueous sodium chloride solution (1×50 mL), dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo to afford 3-cyclopentyl-2-[3-fluoro-4-(5-methyl-tetrazol-1-yl)-phenyl]-propionic acid (360 mg, 94%) as a yellow solid: EI-HRMS m/e calcd for C16H19FN4O2 (M+) 318.1487, found 318.1492.

後処理

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customto remove ethanol
  3. additionThe residue was diluted with water (40 mL)
  4. extractionextracted with diethyl ether (1×50 mL)
  5. customto remove any neutral impurities
  6. extractionthe resulting acid was extracted into ethyl acetate (2×50 mL)
  7. washThe combined organic layers were washed with a saturated aqueous sodium chloride solution (1×50 mL)
  8. dry with materialdried over anhydrous magnesium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-b087023abbd5486980c308be2b53d7ac
出典データセット
uspto-grants-2002_04
特許番号
US06369232B1

反応ノート

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