Sodium Hydroxide → 5-Chloro-2-fluoro-4-methylbenzoic acid

HRID 508422ノート

反応式

HRID 508422 の反応式
[Cl:1][C:2]1[C:3]([CH3:13])=[CH:4][C:5]([F:12])=[C:6]([CH:11]=1)[C:7]([O:9]C)=[O:8].[OH-].[Na+]>O1CCOCC1.O>[Cl:1][C:2]1[C:3]([CH3:13])=[CH:4][C:5]([F:12])=[C:6]([CH:11]=1)[C:7]([OH:9])=[O:8]

参加物

4

反応物 2

HCID 14798Sodium HydroxideHCID 58042513Methyl 5-chloro-2-fluoro-4-methylbenzoate

生成物 1

HCID 580424465-Chloro-2-fluoro-4-methylbenzoic acid収率 84%

試薬・触媒・溶媒 1

HCID 218864351,4-Dioxane--water (1/1)溶媒

実験手順

To a stirred solution of methyl 5-chloro-2-fluoro-4-methylbenzoate (Preparation 12, 340 mg, 1.68 mmol) in dioxane/water (5:1, 12 mL) was added a sodium hydroxide solution (5 M, 1.63 mL, 8.39 mmol). The reaction mixture was stirred at room temperature for 18 hours and then evaporated in vacuo. The resulting residue was suspended in water and extracted with diethyl ether (3×20 mL). The aqueous layer was separated, cooled in an ice bath, acidified with aqueous hydrochloric acid (6 M) and then extracted with EtOAc (30 mL). The combined organics were washed with brine (2×20 mL), dried over sodium sulphate, filtered and evaporated in vacuo to yield the title compound as a white solid (266 mg, 84%).

後処理

  1. customevaporated in vacuo
  2. extractionextracted with diethyl ether (3×20 mL)
  3. customThe aqueous layer was separated
  4. temperaturecooled in an ice bath
  5. extractionextracted with EtOAc (30 mL)
  6. washThe combined organics were washed with brine (2×20 mL)
  7. dry with materialdried over sodium sulphate
  8. filtrationfiltered
  9. customevaporated in vacuo

出典と根拠

ORDレコード
ord-f7de0fe7e88e43f68f8805cfe77bd172
出典データセット
uspto-grants-2015_08
特許番号
US09096500B2

反応ノート

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