Acetonitrile → 1,1-Dimethylethyl [5-fluoro-2-(fluoroacetyl)-6-(methyloxy)-3-pyridinyl]carbamate

HRID 15131

反応式

HRID 15131 の反応式
C([O:3][C:4]([C:6]1[C:11]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[CH:10][C:9]([F:20])=[C:8]([O:21][CH3:22])[N:7]=1)=[CH2:5])C.C(#N)C.C(=O)(O)[O-].[Na+].[F:31][B-](F)(F)F.F[B-](F)(F)F.ClC[N+]12CC[N+](F)(CC1)CC2>O>[F:20][C:9]1[CH:10]=[C:11]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])[C:6]([C:4](=[O:5])[CH2:3][F:31])=[N:7][C:8]=1[O:21][CH3:22]

参加物

6

実験手順

A mixture of 1,1-dimethylethyl [2-[1-(ethyloxy)ethenyl]-5-fluoro-6-(methyloxy)-3-pyridinyl]carbamate (6.72 g, 21.54 mmol), acetonitrile (70 ml), and saturated aqueous sodium bicarbonate solution (15 ml) was treated portionwise over 5 minutes at 0° C. under argon with [1-(chloromethyl)-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor™) (8.9 g, 25.05 mmol). After the addition the mixture was stirred at room temperature for 0.5 hour then treated with saturated aqueous sodium bicarbonate solution (50 ml), stirred for 10 minutes, then diluted with water (100 ml) and extracted with ethyl acetate (3×200 ml). The combined organic extracts were dried over magnesium sulphate and evaporated. The residue was chromatographed eluting with 0-50% dichloromethane in hexane affording the product as a white solid (3.72 g, 57%).

後処理

  1. additionAfter the addition the mixture
  2. stirringstirred for 10 minutes
  3. extractionextracted with ethyl acetate (3×200 ml)
  4. dry with materialThe combined organic extracts were dried over magnesium sulphate
  5. customevaporated
  6. customThe residue was chromatographed
  7. washeluting with 0-50% dichloromethane in hexane affording the product as a white solid (3.72 g, 57%)

出典と根拠

ORDレコード
ord-bafbb154d86e4eac85d553a85bf98cb2
出典データセット
uspto-grants-2010_06
特許番号
US07732460B2

関連ノート

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