Phosphorus oxychloride → 2-chloro-4-methoxy-1H-Benzimidazole

HRID 410215노트

반응식

HRID 410215 반응식
[CH3:1][O:2][C:3]1[C:11]2[NH:10][C:9](=O)[NH:8][C:7]=2[CH:6]=[CH:5][CH:4]=1.O=P(Cl)(Cl)[Cl:15]>>[Cl:15][C:9]1[NH:10][C:11]2[C:3]([O:2][CH3:1])=[CH:4][CH:5]=[CH:6][C:7]=2[N:8]=1

참가 물질

3

반응물 2

HCID 24813Phosphorus oxychlorideHCID 129266284-methoxy-1H-benzo[d]imidazol-2(3H)-one

생성물 1

HCID 1784889662-chloro-4-methoxy-1H-Benzimidazole

실험 절차

To a round bottomed flask was added 4-methoxy-1H-benzo[d]imidazol-2(3H)-one (1.8163 g, 11.06 mmol). POCl3 (1.031 mL, 11.06 mmol) was added and the reaction was brought to reflux. Upon completion, POCL3 was evaporated off. The residue was taken up in DCM. The reaction mixture was diluted with water and saturated sodium bicarbonate and extracted with DCM. The organic extract was washed with sat. sodium bicarbonate solution, water, brine, dried with, magnesium sulfate, filtered, and concentrated to provide 2-Chloro-7-methoxy-1H-benzo[d]imidazole. MS (ESI, pos. ion) m/z: 182.9 (M+1).

후처리

  1. temperatureto reflux
  2. customUpon completion, POCL3 was evaporated off
  3. additionThe reaction mixture was diluted with water and saturated sodium bicarbonate
  4. extractionextracted with DCM
  5. extractionThe organic extract
  6. washwas washed with sat. sodium bicarbonate solution, water, brine
  7. dry with materialdried with, magnesium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated

출처 및 근거

ORD 기록
ord-c5b312783c344492887a4fe656515547
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08759532B2

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