1-(2-Nitro-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanone → 1-(2-amino-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanone

HRID 592881노트

반응식

HRID 592881 반응식
[N+:1]([C:4]1[CH:15]=[C:7]2[CH2:8][N:9]([C:12](=[O:14])[CH3:13])[CH2:10][CH2:11][N:6]2[N:5]=1)([O-])=O>[Pd].CO>[NH2:1][C:4]1[CH:15]=[C:7]2[CH2:8][N:9]([C:12](=[O:14])[CH3:13])[CH2:10][CH2:11][N:6]2[N:5]=1

참가 물질

4

반응물 1

HCID 580439581-(2-Nitro-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanone

생성물 1

HCID 580440081-(2-amino-6,7-dihydropyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanone수율 90.1%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 887Methanol용매

실험 절차

A 50-mL single-neck round-bottomed flask was purged with nitrogen and charged with 209a (492 mg, 2.34 mmol), 10% palladium on carbon (50% wet, 234 mg), and methanol (20 mL). The mixture was evacuated, charged with hydrogen gas, and stirred at room temperature for 2 h. The hydrogen was then evacuated and nitrogen was charged into the flask. The catalyst was removed by filtration through a pad of CELITE® and the filtrate was concentrated under reduced pressure to afford 209b (380 mg, 80%). MS: [M+H]+ 181.1

후처리

  1. customA 50-mL single-neck round-bottomed flask was purged with nitrogen
  2. customThe mixture was evacuated
  3. additioncharged with hydrogen gas
  4. customThe hydrogen was then evacuated
  5. additionnitrogen was charged into the flask
  6. customThe catalyst was removed by filtration through a pad of CELITE®
  7. concentrationthe filtrate was concentrated under reduced pressure

출처 및 근거

ORD 기록
ord-0ecabcf9612b4ef9aedfe7efa3fe8fed
출처 데이터셋
uspto-grants-2016_01
특허 번호
US09238655B2

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