Acetic Acid → 4-(4-Bromo-phenyl)1,3-dihydro-indol-2-one

HRID 983009노트

반응식

HRID 983009 반응식
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:16]=[CH:15][CH:14]=[C:13]3[C:9]=2[CH:10]=[CH:11][NH:12]3)=[CH:4][CH:3]=1.[Br-].[Br-].[Br-].[NH+]1C=CC=CC=1.[NH+]1C=CC=CC=1.[NH+]1C=CC=CC=1.C(O)(=[O:40])C>CC(O)(C)C.C(O)C.C(O)(=O)C.[Zn]>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[CH:16]=[CH:15][CH:14]=[C:13]3[C:9]=2[CH2:10][C:11](=[O:40])[NH:12]3)=[CH:6][CH:7]=1

참가 물질

6

반응물 3

HCID 176Acetic AcidHCID 21124087PyridiniumtribromideHCID 225619344-(4-Bromo-phenyl)-1H-indole

생성물 1

HCID 225617214-(4-Bromo-phenyl)1,3-dihydro-indol-2-one수율 88%

시약·촉매·용매 2

HCID 23994Zinc촉매HCID 86587657t-BuOH ethanol aceticacid용매

반응 조건

온도
27 °C

실험 절차

To the suspension of 4-(4-bromo-phenyl)-1H-indole (1.20 g, 4.41 mmol) in t-BuOH-ethanol-acetic acid (3:2:1) (54 mL) was added pyridinium tribromide (4.23 g, 13.23 mmol)) portionwise. The mixture was stirred at 27° C. for 3 hours, and then to the mixture was added acetic acid (30 mL). Zinc dust was added to the reaction mixture portionwise until the color changed from deep red to light yellow, and the reaction mixture was stirred at room temperature for one hour. The unreacted zinc dust was filtered off and washed with ethanol. The filtrate was concentrated, and the syrupy residue was suspended in water (300 mL) for 0.5 hour. The solid product was precipitated out, filtered, and washed repeatedly with water to remove the zinc salt and pyridine salt. After high vacuum dry, a pure product (1.12 g, 88%) was obtained.

후처리

  1. stirringwas stirred at room temperature for one hour
  2. filtrationThe unreacted zinc dust was filtered off
  3. washwashed with ethanol
  4. concentrationThe filtrate was concentrated
  5. waitthe syrupy residue was suspended in water (300 mL) for 0.5 hour
  6. customThe solid product was precipitated out
  7. filtrationfiltered
  8. washwashed repeatedly with water
  9. customto remove the zinc salt and pyridine salt
  10. customAfter high vacuum dry

출처 및 근거

ORD 기록
ord-c5b60e77e4f64c4887d153db1a0375f8
출처 데이터셋
uspto-grants-2005_03
특허 번호
US06861418B2

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