Sodium hydride → 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-methylamino]butyloxy}acetic Acid Methyl Ester

HRID 1271288노트

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HRID 1271288 반응식
[C:1]1([C:7]2[N:8]=[CH:9][C:10]([NH:19][CH3:20])=[N:11][C:12]=2[C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Na+].[CH3:23][O:24][C:25](=[O:33])[CH2:26][O:27][CH2:28][CH2:29][CH2:30][CH2:31]Br>CN(C)C=O>[CH3:23][O:24][C:25](=[O:33])[CH2:26][O:27][CH2:28][CH2:29][CH2:30][CH2:31][N:19]([C:10]1[CH:9]=[N:8][C:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[C:12]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[N:11]=1)[CH3:20]

참가 물질

5

반응물 3

HCID 24758Sodium hydrideHCID 12548150N-Methyl-5,6-diphenylpyrazin-2-amineHCID 858402522-(4-Bromobutyloxy)acetic acid methyl ester

생성물 1

HCID 693554312-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-methylamino]butyloxy}acetic Acid Methyl Ester수율 20.3%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매2회

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온도
80 °C

실험 절차

Under an argon atmosphere, to a solution of 763 mg of 5,6-diphenyl-2-(methylamino)pyrazine in 4 ml of N,N-dimethylformamide, 140 mg of 60% sodium hydride was added, followed by stirring at 80° C. for 30 minutes. The reaction solution was ice-cooled and a solution of 657 mg of 2-(4-bromobutyloxy)acetic acid methyl ester in 2 ml of N,N-dimethylformamide was slowly added. After an ice bath was removed, the mixture was stirred at room temperature for 14 hours. The reaction solution was combined with ice water and extracted with ethyl acetate and, after the extract was washed with saturated brine and dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography to obtain 240 mg of the desired compound as a pale yellow oily substance.

후처리

  1. temperaturecooled
  2. customAfter an ice bath was removed
  3. stirringthe mixture was stirred at room temperature for 14 hours
  4. extractionextracted with ethyl acetate
  5. washafter the extract was washed with saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customthe solvent was evaporated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-a971f42d66a04bb4a6394f50bb0de966
출처 데이터셋
uspto-grants-2007_04
특허 번호
US07205302B2

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