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Tetrabutylammonium Fluoride → N-(4-(5-((1R,2R)-1-(3-Chloro-4-cyano-2-methylphenylamino)-2-hydroxypropyl)-1,3,4-oxadiazol-2-yl)phenyl)benzamide

HRID 563335
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HRID 563335 반응식
[Si]([O:8][C@H:9]([CH3:42])[C@H:10]([C:22]1[O:26][C:25]([C:27]2[CH:32]=[CH:31][C:30]([NH:33][C:34](=[O:41])[C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)=[CH:29][CH:28]=2)=[N:24][N:23]=1)[NH:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]#[N:19])=[C:14]([Cl:20])[C:13]=1[CH3:21])(C(C)(C)C)(C)C.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1>[Cl:20][C:14]1[C:13]([CH3:21])=[C:12]([NH:11][C@@H:10]([C:22]2[O:26][C:25]([C:27]3[CH:32]=[CH:31][C:30]([NH:33][C:34](=[O:41])[C:35]4[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=4)=[CH:29][CH:28]=3)=[N:24][N:23]=2)[C@H:9]([OH:8])[CH3:42])[CH:17]=[CH:16][C:15]=1[C:18]#[N:19]
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HCID 2724141Tetrabutylammonium FluorideHCID 59193025N-(4-(5-((1R,2R)-2-(tert-Butyldimethylsilyloxy)-1-(3-chloro-4-cyano-2-methylphenylamino)propyl)-1,3,4-oxadiazol-2-yl)phenyl)benzamide

생성물 1

HCID 44199942N-(4-(5-((1R,2R)-1-(3-Chloro-4-cyano-2-methylphenylamino)-2-hydroxypropyl)-1,3,4-oxadiazol-2-yl)phenyl)benzamide수율 91%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
13 °C

실험 절차

To a pre-cooled (−55° C.) solution of N-(4-(5-((1R,2R)-2-(tert-butyldimethylsilyloxy)-1-(3-chloro-4-cyano-2-methylphenylamino)propyl)-1,3,4-oxadiazol-2-yl)phenyl)benzamide (367 mg, 0.61 mmol) in THF (25 mL) was added TBAF (0.73 mL, 0.73 mmol, 1 M solution in THF) over 5 minutes. Upon complete addition the reaction mixture was allowed to warm to 13° C. over 3.5 h and quenched with sat. aq. NH4Cl (30 mL). The resulting mixture was partitioned between H2O (30 mL) and EtOAc (40 mL). The aqueous layer was extracted with EtOAc (30 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated under reduced pressure to provide a yellow oil, which was purified by flash chromatography over silica gel (20-60% EtOAc in hexanes) to provided the title compound as a colourless solid (270 mg, 91%): 1H NMR (400 MHz, d6-acetone, δ in ppm) 9.83 (s 1H), 8.08-7.95 (m, 6H), 7.63-7.47 (m, 4H), 6.90 (d, J=8.6 Hz, 1H), 5.88 (d, J=8.8 Hz, 1H), 5.06 (dd, J=5.5, 8.8 Hz, 1H), 4.68 (br s, 1H), 4.53 (pentet, J=6.1 Hz, 1H), 2.37 (s, 3H), 1.43 (d, J=6.5 Hz, 3H).

후처리

  1. additionUpon complete addition the reaction mixture
  2. customquenched with sat. aq. NH4Cl (30 mL)
  3. customThe resulting mixture was partitioned between H2O (30 mL) and EtOAc (40 mL)
  4. extractionThe aqueous layer was extracted with EtOAc (30 mL)
  5. dry with materialThe combined organic extracts were dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customto provide a yellow oil, which
  9. customwas purified by flash chromatography over silica gel (20-60% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-8eeacded0261447aa9ebf3bf5507ec45
출처 데이터셋
uspto-grants-2011_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08067448B2

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