5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3carboxaldehyde-3-oxime → 5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carbonitrile

HRID 67608노트

반응식

HRID 67608 반응식
[CH3:1][N:2]1[C:8](=[O:9])[C:7]2[CH:10]=[CH:11][CH:12]=[CH:13][C:6]=2[N:5]2[CH:14]=[N:15][C:16]([CH:17]=[N:18]O)=[C:4]2[CH2:3]1>C(OC(=O)C)(=O)C>[CH3:1][N:2]1[C:8](=[O:9])[C:7]2[CH:10]=[CH:11][CH:12]=[CH:13][C:6]=2[N:5]2[CH:14]=[N:15][C:16]([C:17]#[N:18])=[C:4]2[CH2:3]1

참가 물질

3

반응물 1

HCID 867382645,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3carboxaldehyde-3-oxime

생성물 1

HCID 139845425-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carbonitrile

시약·촉매·용매 1

HCID 7918Acetic Anhydride용매

실험 절차

A solution of 4.8 g (18.7 mmol) of 5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxaldehyde-3-oxime in 50 ml of acetic acid anhydride is heated to boiling under reflux for 28 hours. After evaporation of the mixture in vacuo, the residue is taken up in 150 ml of chloroform and washed twice with 30 ml of saturated sodium hydrogen carbonate solution each time and with 30 ml of water. The organic phase is dried over magnesium sulphate and evaporated. After column chromatography on silica gel and recrystallisation from ethyl acetate, there is obtained 5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carbonitrile of melting point 184°-186° C.

후처리

  1. temperatureunder reflux for 28 hours
  2. customAfter evaporation of the mixture in vacuo
  3. washwashed twice with 30 ml of saturated sodium hydrogen carbonate solution each time
  4. dry with materialThe organic phase is dried over magnesium sulphate
  5. customevaporated
  6. customAfter column chromatography on silica gel and recrystallisation from ethyl acetate

출처 및 근거

ORD 기록
ord-9d41aa061fcf4159b0df8c2bfc2871ea
출처 데이터셋
uspto-grants-1982_08
특허 번호
US04346036

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