1,2-Dichloroethane → Tert-butyl 4-(cyclopropylamino)-3-hydroxy-4-oxo-1-phenylbutan-2-ylcarbamate

HRID 1474144노트

반응식

HRID 1474144 반응식
C(Cl)CCl.C1C=C[C:8]2N(O)N=[N:11][C:9]=2[CH:10]=1.CCN(CC)CC.[C:22]([O:26][C:27]([NH:29][CH:30]([CH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)[CH:31]([OH:35])[C:32]([OH:34])=O)=[O:28])([CH3:25])([CH3:24])[CH3:23].C1(N)CC1>C(Cl)Cl>[CH:9]1([NH:11][C:32](=[O:34])[CH:31]([OH:35])[CH:30]([NH:29][C:27](=[O:28])[O:26][C:22]([CH3:23])([CH3:24])[CH3:25])[CH2:36][C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[CH2:10][CH2:8]1

참가 물질

7

반응물 5

HCID 111,2-Dichloroethane2회HCID 8471Triethylamine2회HCID 69828Cyclopropylamine2회HCID 757711-Hydroxybenzotriazole2회HCID 34203793-tert-Butoxycarbonylamino-2-hydroxy-4-phenylbutyric acid

생성물 1

HCID 66645006Tert-butyl 4-(cyclopropylamino)-3-hydroxy-4-oxo-1-phenylbutan-2-ylcarbamate수율 85%

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

EDC (8.3 g, 43.3 mmol), HOBT (6.6 g, 43.1 mmol) and Et3N (7 ml, 50.2 mmol) were added to a mixture of 3-(tert-butoxycarbonylamino)-2-hydroxy-4-phenylbutanoic acid (10.6 g, 35.9 mmol) and cyclopropylamine (3.3 ml, 47.6 mmol) in DCM (300 mL) at 5° C. The reaction mixture was allowed to warm to room temperature and stirred overnight. After cooling to 5° C. more cyclopropylamine (2 ml, 28.5 mmol), EDC (5 g, 26.1 mmol), HOBT (4 g, 26.1 mmol) and Et3N (3.5 ml, 25.1 mmol) were added, the mixture was allowed to warm to room temperature and the stirring was continued overnight. DCM (300 mL) was added, followed by washing with 0.5 M aqueous HCl solution, brine and drying with MgSO4. The crude product was recrystallized from methyl-tert-butylether, the crystals obtained were washed with n-pentane and dried providing the title compound (10.2 g, 85%).

후처리

  1. additionwere added
  2. temperatureto warm to room temperature
  3. waitthe stirring was continued overnight
  4. washby washing with 0.5 M aqueous HCl solution, brine
  5. dry with materialdrying with MgSO4
  6. customThe crude product was recrystallized from methyl-tert-butylether
  7. customthe crystals obtained
  8. washwere washed with n-pentane
  9. customdried

출처 및 근거

ORD 기록
ord-585f2016e8064d7e8fff54ebff2f60a5
출처 데이터셋
uspto-grants-2015_04
특허 번호
US09018206B2

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