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Water → 2-Methyl-4,6-diphenyl-5-(4-pyridyl)pyrazolo(3,4-b]pyridine

HRID 2376731
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HRID 2376731 반응식
[C:1]1([C:7]2[C:12]([C:13]3[CH:18]=[CH:17][N:16]=[CH:15][CH:14]=3)=[C:11]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)[N:10]=[C:9]3[NH:25][N:26]=[CH:27][C:8]=23)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[OH-].[K+].I[CH3:31].O>CC(C)=O>[CH3:31][N:26]1[CH:27]=[C:8]2[C:9]([N:10]=[C:11]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)[C:12]([C:13]3[CH:18]=[CH:17][N:16]=[CH:15][CH:14]=3)=[C:7]2[C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[N:25]1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 962WaterHCID 6328Methyl iodideHCID 14797Potassium HydroxideHCID 670148534,6-diphenyl-5-(4-pyridyl)-1H-pyrazolo[3,4-b]pyridine

생성물 1

HCID 684450762-Methyl-4,6-diphenyl-5-(4-pyridyl)pyrazolo(3,4-b]pyridine수율 47%

시약·촉매·용매 1

HCID 180
Acetone
용매
2회

실험 절차

To a suspension of 4,6-diphenyl-5-(4-pyridyl)-1H-pyrazolo[3,4-b]pyridine (0.10 g, 0.3 mmol, obtained in example 2) in acetone (1 mL), KOH (21 mg, 0.4 mmol) was added under argon atmosphere. Then, a solution of iodomethane (47 mg, 0.3 mmol) in acetone (0.1 mL) was added and stirred overnight at room temperature. Water was added and extracted with CHCl3. The organic phase was dried over Na2SO4 and concentrated to dryness. The crude product obtained was purified by chromatography on silica gel using hexane-EtOAc mixtures of increasing polarity as eluent, to afford 47 mg of 2-methyl-4,6-diphenyl-5-(4-pyridyl)pyrazolo[3,4-b]pyridine (yield: 47%) and 38 mg of 1-methyl-4,6-diphenyl-5-(4-pirridyl)pyrazolo[3,4-b]pyridine (yield: 38%).

후처리

  1. additionwas added under argon atmosphere
  2. extractionextracted with CHCl3
  3. dry with materialThe organic phase was dried over Na2SO4
  4. concentrationconcentrated to dryness
  5. customThe crude product obtained
  6. customwas purified by chromatography on silica gel
  7. temperatureof increasing polarity as eluent

출처 및 근거

ORD 기록
ord-4f06e0bf936a469d9637ce114417d238
출처 데이터셋
uspto-grants-2008_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07468376B2

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