Diisopropylamine → 6-bromo-2-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine

HRID 1052312노트

반응식

HRID 1052312 반응식
C(NC(C)C)(C)C.C([Li])CCC.[F:13][C:14]1[C:19]([O:20][CH3:21])=[CH:18][C:17]([O:22][CH3:23])=[C:16]([F:24])[C:15]=1[CH2:25][CH2:26][C:27]1[N:28]=[C:29]2[CH:35]=[CH:34][N:33]([S:36]([C:39]3[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=3)(=[O:38])=[O:37])[C:30]2=[N:31][CH:32]=1.[Br:45]C(Cl)(Cl)C(Br)(Cl)Cl>O1CCCC1>[Br:45][C:34]1[N:33]([S:36]([C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)(=[O:38])=[O:37])[C:30]2=[N:31][CH:32]=[C:27]([CH2:26][CH2:25][C:15]3[C:16]([F:24])=[C:17]([O:22][CH3:23])[CH:18]=[C:19]([O:20][CH3:21])[C:14]=3[F:13])[N:28]=[C:29]2[CH:35]=1

참가 물질

6

반응물 4

HCID 7912DiisopropylamineHCID 694261,2-Dibromo-1,1,2,2-tetrachloroethaneHCID 899629792-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazineHCID 178418339Butyllithium

생성물 1

HCID 899635876-bromo-2-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine수율 70,456.398%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매3회

반응 조건

온도
0 °C

실험 절차

To a stirred solution of N,N-diisopropylamine (0.150 mL, 1.07 mmol) in tetrahydrofuran (0.48 mL) at 78° C., n-butyllithium (2.5 M in hexanes, 0.428 mL, 1.07 mmol) was added dropwise. After a white precipitate formed, the mixture was warmed up to 0° C. for 10 minutes. The resulting solution was added to a stirred solution of 2-[2-(2,6-difluoro-3,5-dimethoxyphenyl)ethyl]-5-(phenylsulfonyl)-5H-pyrrolo[2,3-b]pyrazine (400 mg, 0.871 mmol) in tetrahydrofuran (3 mL) at 78° C. After 10 minutes, a solution of 1,2-dibromo-1,1,2,2-tetrachloroethane (0.283 g, 0.870 mmol) in tetrahydrofuran (2 mL) was added dropwise. After another 1 hour, the reaction mixture was quenched with saturated aq. NH4Cl, then extracted with methylene chloride. The combined organic layers were dried over MgSO4, then concentrated. The residue was purified on silica gel (eluting with 0 to 50% EtOAc in hexanes) to give the desired product (330 g, 70%). LCMS calculated for C22H19BrF2N3O4S (M+H)+: m/z=538.0. Found: 538.0.

후처리

  1. customAfter a white precipitate formed
  2. waitAfter another 1 hour
  3. customthe reaction mixture was quenched with saturated aq. NH4Cl
  4. extractionextracted with methylene chloride
  5. dry with materialThe combined organic layers were dried over MgSO4
  6. concentrationconcentrated
  7. customThe residue was purified on silica gel (eluting with 0 to 50% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-cf60af4adc8643afbb1830e283d3fccc
출처 데이터셋
uspto-grants-2016_07
특허 번호
US09388185B2

반응 노트

불러오는 중…