Sodium Hydroxide → 2-(4-Chloro-2-pyridinyl)-1-(4-fluorophenyl)ethanone oxime

HRID 723984노트

반응식

HRID 723984 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]([CH2:8][C:9]([C:11]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=2)=O)[CH:3]=1.Cl.[NH2:19][OH:20].[OH-].[Na+]>CO>[Cl:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]([CH2:8][C:9]([C:11]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=2)=[N:19][OH:20])[CH:3]=1

참가 물질

5

반응물 3

HCID 14798Sodium HydroxideHCID 443297Hydroxyamine hydrochlorideHCID 218740612-(4-Chloropyridin-2-yl)-1-(4-fluorophenyl)ethan-1-one

생성물 1

HCID 738517532-(4-Chloro-2-pyridinyl)-1-(4-fluorophenyl)ethanone oxime수율 84%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

To a solution of 2-(4-chloro-2-pyridinyl)-1-(4-fluorophenyl)ethanone (9.6 g, 38 mmol) in methanol (200 mL) was added hydroxylamine hydrochloride (13.5 g, 190 mmol) followed by the addition of a sodium hydroxide solution (7.8 g, 190 mmol in 50 mL of water). The resulting suspension was heated at reflux for 2 hours and then allowed to cool to room temperature. The mixture was concentrated and water was added to the resulting slurry. A white precipitate formed, which was collected by filtration, washed with water and dried (magnesium sulfate) to give 2-(4-chloro-2-pyridinyl)-1-(4-fluorophenyl)ethanone oxime (8.45 g, 84%) as a white solid. 1H-NMR (DMSO-d6): δ 11.56 (s, 1H), 8.44 (d, 1H), 7.80 (m, 2H), 7.40 (m, 2H), 7.22 (m, 2H), 4.29 (s, 2H); 19F-NMR (DMSO-d6): δ −113.44; MS m/265 (M+1).

후처리

  1. temperatureThe resulting suspension was heated
  2. temperatureat reflux for 2 hours
  3. concentrationThe mixture was concentrated
  4. additionwater was added to the resulting slurry
  5. customA white precipitate formed
  6. filtrationwhich was collected by filtration
  7. washwashed with water
  8. dry with materialdried (magnesium sulfate)

출처 및 근거

ORD 기록
ord-b8a24a5ac03f421faaf73b618c491709
출처 데이터셋
uspto-grants-2006_11
특허 번호
US07141569B2

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