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Hydrochloric Acid → tert-Butyl 4-(1-(2-hydroxyethyl)-4-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-2-yl)piperidine-1-carboxylate

HRID 2088887
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HRID 2088887 반응식
O1CCCCC1[O:7][CH2:8][CH2:9][N:10]1[CH:14]=[C:13]([CH:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)[N:12]=[C:11]1[CH:21]1[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]1.O1CCCC1.Cl>C(OCC)(=O)C>[OH:7][CH2:8][CH2:9][N:10]1[CH:14]=[C:13]([CH:15]2[CH2:16][CH2:17][O:18][CH2:19][CH2:20]2)[N:12]=[C:11]1[CH:21]1[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]1
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참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 67954713tert-Butyl 4-(1-(2-(tetrahydro-2H-pyran-2-yloxy)ethyl)-4-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-2-yl)piperidine-1-carboxylate

생성물 1

HCID 67113226tert-Butyl 4-(1-(2-hydroxyethyl)-4-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-2-yl)piperidine-1-carboxylate수율 79.5%

시약·촉매·용매 1

HCID 8857
Ethyl Acetate
용매

실험 절차

Combine tert-butyl 4-(1-(2-(tetrahydro-2H-pyran-2-yloxy)ethyl)-4-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-2-yl)piperidine-1-carboxylate (6.88 g, 14.84 mmol), tetrahydrofuran (136 mL) and 1 N aqueous hydrochloric acid (25 mL). Stir the reaction at room temperature overnight. Dilute with ethyl acetate and wash with saturated aqueous sodium chloride and saturated aqueous sodium bicarbonate. Extract the combined aqueous layers with 9:1 dichloromethane:isopropyl alcohol. Dry the combined organic layers over anhydrous sodium sulfate, filter, and concentrate in vacuo. Purify by silica gel chromatography, eluting with hexanes to 50% ethyl acetate in hexanes to ethyl acetate to 10% methanol in ethyl acetate to 10% methanol in dichloromethane, to give the title compound as a white solid (4.48 g, 79%). MS (ES) m/z=380 [M]+.

후처리

  1. customthe reaction at room temperature overnight
  2. washwash with saturated aqueous sodium chloride and saturated aqueous sodium bicarbonate
  3. extractionExtract the combined aqueous layers with 9:1 dichloromethane
  4. dry with materialDry the combined organic layers over anhydrous sodium sulfate
  5. filtrationfilter
  6. concentrationconcentrate in vacuo
  7. customPurify by silica gel chromatography
  8. washeluting with hexanes to 50% ethyl acetate in hexanes to ethyl acetate to 10% methanol in ethyl acetate to 10% methanol in dichloromethane

출처 및 근거

ORD 기록
ord-578bde80f9ee481ebbaec8fba76df9e3
출처 데이터셋
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08436002B2

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