Potassium Carbonate → HCID 22050302、化合物

HRID 1831939ノート

反応式

HRID 1831939 の反応式
[F:1][C:2]1[CH:3]=[C:4]([CH:14]=[CH:15][CH:16]=1)[CH2:5][N:6]1[CH:11]=[CH:10][C:9]([OH:12])=[CH:8][C:7]1=[O:13].C([O-])([O-])=O.[K+].[K+].[F:23][C:24]1[CH:31]=[C:30]([F:32])[CH:29]=[CH:28][C:25]=1[CH2:26]Br>CC(C)=O>[F:23][C:24]1[CH:31]=[C:30]([F:32])[CH:29]=[CH:28][C:25]=1[CH2:26][O:12][C:9]1[CH:10]=[CH:11][N:6]([CH2:5][C:4]2[CH:14]=[CH:15][CH:16]=[C:2]([F:1])[CH:3]=2)[C:7](=[O:13])[CH:8]=1

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 902971-(Bromomethyl)-2,4-difluorobenzeneHCID 54724162HCID 54724162、化合物

生成物 1

HCID 22050302HCID 22050302、化合物収率 84%

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

To a solution of 1-(3-fluorobenzyl)-4-hydroxy-1H-pyridin-2-one (from Step 2 EXAMPLE 107) (0.92 g, 4.2 mmol) and K2CO3 (1.2 g, 8.4 mmol) in acetone (62 mL) was added 2,4-difluorobenzyl bromide (1.3 g, 6.3 mmol), and the reaction mixture was heated at reflux for 3 h. The reaction mixture was cooled room temperature, concentrated under reduced pressure, and the residue was partitioned between water and EtOAc. The organic solution was washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification by flash column chromatography (silica, eluent methylene chloride to 95:5 methylene chloride/methanol) to provide 4-(2,4-difluorobenzyloxy)-1-(3-fluorobenzyl)-1H-pyridin-2-one as a white solid (1.21 g, 84%): 1H NMR (300 MHz, CDCl3) δ 7.45-7.20 (m, 2H), 7.14 (d, J=8 Hz, 1H), 7.05-6.75 (m, 5H), 6.05 (d, J=3 Hz, 1H), 5.95 (dd, J=5, 3 Hz, 1H), 5.08 (s, 2H), 5.00 (s, 2H).

後処理

  1. temperaturethe reaction mixture was heated
  2. temperatureat reflux for 3 h
  3. concentrationconcentrated under reduced pressure
  4. customthe residue was partitioned between water and EtOAc
  5. washThe organic solution was washed with brine
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customPurification by flash column chromatography (silica, eluent methylene chloride to 95:5 methylene chloride/methanol)

出典と根拠

ORDレコード
ord-98269825a2c745fbaab9c82fa6953327
出典データセット
uspto-grants-2006_06
特許番号
US07067540B2

反応ノート

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