Hydrochloric Acid → (2RS,3RS)-3-(3,4-difluorophenyl)-3-hydroxy-2-((4-(trifluoromethyl)phenyl)methyl)propionic acid

HRID 1610395ノート

反応式

HRID 1610395 の反応式
[F:1][C:2]1[CH:3]=[C:4]([CH:9]([OH:27])[CH:10]([CH2:16][C:17]2[CH:22]=[CH:21][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:19][CH:18]=2)[C:11]([O:13]CC)=[O:12])[CH:5]=[CH:6][C:7]=1[F:8].[OH-].[Na+].Cl>CO>[F:1][C:2]1[CH:3]=[C:4]([CH:9]([OH:27])[CH:10]([CH2:16][C:17]2[CH:22]=[CH:21][C:20]([C:23]([F:24])([F:25])[F:26])=[CH:19][CH:18]=2)[C:11]([OH:13])=[O:12])[CH:5]=[CH:6][C:7]=1[F:8]

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 86593244ethyl (2RS,3RS)-3-(3,4-difluorophenyl)-3-hydroxy-2-((4-(trifluoromethyl)phenyl)methyl)propionate

生成物 1

HCID 22262215(2RS,3RS)-3-(3,4-difluorophenyl)-3-hydroxy-2-((4-(trifluoromethyl)phenyl)methyl)propionic acid収率 74.4%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

To a solution of ethyl (2RS,3RS)-3-(3,4-difluorophenyl)-3-hydroxy-2-((4-(trifluoromethyl)phenyl)methyl)propionate (9.7 g, 25.0 mmol) in methanol (40 ml) was added 2N aqueous sodium hydroxide solution (25 ml, 50.0 mmol) and the mixture was stirred overnight at room temperature. The reaction solution was acidified with 1N hydrochloric acid and extracted with ethyl acetate (200 ml×2). The extract was washed with water and saturated brine, dried over anhydrous magnesium sulfate and evaporated under reduced pressure. The residue was recrystallized from ethyl acetate-hexane to give (2RS,3RS)-3-(3,4-difluorophenyl)-3-hydroxy-2-((4-(trifluoromethyl)phenyl)methyl)propionic acid (6.7 g, 74%).

後処理

  1. extractionextracted with ethyl acetate (200 ml×2)
  2. washThe extract was washed with water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customevaporated under reduced pressure
  5. customThe residue was recrystallized from ethyl acetate-hexane

出典と根拠

ORDレコード
ord-e30f9ff1c36a4843b2fd2d21987eca43
出典データセット
uspto-grants-2006_01
特許番号
US06982348B2

反応ノート

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