2,4,6-Tris(1-methyl-3-trifluoromethylpyrazol-5-yloxy)pyridine → 2,6-Bis(1-methyl-3-trifluoromethylpyrazol-5-yloxy)-4-methoxypyridine

HRID 23320

反応式

HRID 23320 の反応式
C[O-].[K+].[CH3:4][N:5]1[C:9]([O:10][C:11]2[CH:16]=[C:15]([O:17][C:18]3N(C)N=C(C(F)(F)F)C=3)[CH:14]=[C:13]([O:28][C:29]3[N:33]([CH3:34])[N:32]=[C:31]([C:35]([F:38])([F:37])[F:36])[CH:30]=3)[N:12]=2)=[CH:8][C:7]([C:39]([F:42])([F:41])[F:40])=[N:6]1>CO>[CH3:34][N:33]1[C:29]([O:28][C:13]2[CH:14]=[C:15]([O:17][CH3:18])[CH:16]=[C:11]([O:10][C:9]3[N:5]([CH3:4])[N:6]=[C:7]([C:39]([F:40])([F:41])[F:42])[CH:8]=3)[N:12]=2)=[CH:30][C:31]([C:35]([F:38])([F:36])[F:37])=[N:32]1

参加物

4

反応物 2

HCID 158696782,4,6-Tris(1-methyl-3-trifluoromethylpyrazol-5-yloxy)pyridineHCID 23664618Potassium methoxide

生成物 1

HCID 225726302,6-Bis(1-methyl-3-trifluoromethylpyrazol-5-yloxy)-4-methoxypyridine収率 43.4%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒2 回

実験手順

A 3 ml aliquot of a 25% solution of potassium methylate (10 mmol) in dry methanol is added to a solution of 5.7 g (10 mmol) 2,4,6-tris-(1-methyl-3-trifluoromethylpyrazol-5-yloxy)pyridine in 20 ml anhydrous methanol. After 2 hours at ambient temperature, the reaction mixture is heated to reflux. The solvent is removed under reduced pressure and ethyl acetate is added to the residue. The mixture is washed with a 2 N sodium hydroxide solution. After drying and filtration of the organic layer, the solvents are removed and the residue is washed with diisopropyl ether and pentane. Colorless crystals (1.9 g, 43% yield) of melting point 107° C. are obtained.

後処理

  1. temperaturethe reaction mixture is heated to reflux
  2. customThe solvent is removed under reduced pressure and ethyl acetate
  3. additionis added to the residue
  4. washThe mixture is washed with a 2 N sodium hydroxide solution
  5. customAfter drying
  6. filtrationfiltration of the organic layer
  7. customthe solvents are removed
  8. washthe residue is washed with diisopropyl ether and pentane

出典と根拠

ORDレコード
ord-7495576432a7471cbd6b25776388fbd0
出典データセット
uspto-grants-2005_02
特許番号
US06852673B2

関連ノート

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