Sodium Carbonate → 5-Bromo-2-fluoro-3-pyridinecarboxaldehyde oxime

HRID 55858

반응식

HRID 55858 반응식
[Br:1][C:2]1[CH:3]=[C:4]([CH:9]=O)[C:5]([F:8])=[N:6][CH:7]=1.Cl.[NH2:12][OH:13].C(=O)([O-])[O-].[Na+].[Na+]>CO.O>[Br:1][C:2]1[CH:3]=[C:4]([CH:9]=[N:12][OH:13])[C:5]([F:8])=[N:6][CH:7]=1

참가 물질

5

반응물 3

HCID 10340Sodium CarbonateHCID 443297Hydroxyamine hydrochlorideHCID 454801925-Bromo-2-fluoro-3-pyridinecarboxaldehyde

생성물 1

HCID 1317368795-Bromo-2-fluoro-3-pyridinecarboxaldehyde oxime수율 97.8%

시약·촉매·용매 1

HCID 22242641Methanol--water (1/1)용매

실험 절차

To a solution of 5-bromo-2-fluoro-pyridine-3-carbaldehyde (2) (20.0 g, 98.0 mmol) in 1:1 MeOH—H2O (250 mL) was added hydroxylamine hydrochloride (7.52 g, 108 mmol) and sodium carbonate (11.4 g, 108 mmol). The reaction mixture was stirred at rt for 1 hour. The solvent was evaporated in vacuo and the residue diluted with H2O (200 mL) and EtOAc (200 mL). The organic phase was separated, dried (Na2SO4), filtered and the solvent evaporated in vacuo. The product was obtained as a light pink solid (21.0 g, 93%); Rf: 0.4 (10% EtOAc-pet ether).

후처리

  1. customThe solvent was evaporated in vacuo
  2. additionthe residue diluted with H2O (200 mL) and EtOAc (200 mL)
  3. customThe organic phase was separated
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. customthe solvent evaporated in vacuo

출처 및 근거

ORD 기록
ord-e1b82a2e6c5043789b778fa207d56113
출처 데이터셋
uspto-grants-2016_09
특허 번호
US09433622B2

연결된 노트

불러오는 중…