Benzyl Bromide → 2-benzylamino-3-[(S)-4-Boc-3-benzylpiperazinyl]-5-bromopyrazine

HRID 643349노트

반응식

HRID 643349 반응식
[NH2:1][C:2]1[C:7]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[C@@H:10]([CH2:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)[CH2:9]2)=[N:6][C:5]([Br:28])=[CH:4][N:3]=1.CC(C)([O-])C.[K+].[CH2:35](Br)[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1.C(OCC)(=O)C>O1CCOCC1>[CH2:35]([NH:1][C:2]1[C:7]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:19])([CH3:20])[CH3:18])=[O:15])[C@@H:10]([CH2:21][C:22]3[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=3)[CH2:9]2)=[N:6][C:5]([Br:28])=[CH:4][N:3]=1)[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1

참가 물질

6

반응물 4

HCID 7498Benzyl BromideHCID 8857Ethyl AcetateHCID 23665647Potassium tert-butoxideHCID 592622472-amino-5-bromo-3-[(S)-4-Boc-3-benzylpiperazinyl]pyrazine

생성물 1

HCID 592622612-benzylamino-3-[(S)-4-Boc-3-benzylpiperazinyl]-5-bromopyrazine수율 81%

시약·촉매·용매 1

HCID 312751,4-Dioxane용매

실험 절차

To a solution of 2-amino-5-bromo-3-[(S)-4-Boc-3-benzylpiperazinyl]pyrazine 108 (170 mg, 0.379 mmol) in anhydrous dioxane (3 mL) was added a 1 M solution of potassium t-butoxide (0.42 mL, 0.42 mmol). The reaction mixture was stirred at room temperature for 10 minutes and benzyl bromide (130 mg, 0.76 mmol) was added. The reaction mixture was stirred at room temperature for 2 hours. Ethyl acetate (100 mL) was added. The organic layer was washed with water and brine. The organic layer was dried over sodium sulfate. The organic solvent was evaporated under reduced pressure. The crude product was purified by flash column chromatography to yield the desired 2-benzylamino-3-[(S)-4-Boc-3-benzylpiperazinyl]-5-bromopyrazine 112 (165 mg, 0.307 mmol).

후처리

  1. stirringThe reaction mixture was stirred at room temperature for 2 hours
  2. washThe organic layer was washed with water and brine
  3. dry with materialThe organic layer was dried over sodium sulfate
  4. customThe organic solvent was evaporated under reduced pressure
  5. customThe crude product was purified by flash column chromatography

출처 및 근거

ORD 기록
ord-3686c48d0af94dc1a3f47116f4151ce8
출처 데이터셋
uspto-grants-2010_04
특허 번호
US07700601B2

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