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Imidazole → 5-tert-Butyl-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-2H-pyrazol-3-ylamine

HRID 1446653
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HRID 1446653 반응식
[NH2:1][C:2]1[N:6]([CH2:7][CH2:8][OH:9])[N:5]=[C:4]([C:10]([CH3:13])([CH3:12])[CH3:11])[CH:3]=1.[CH3:14][C:15]([Si:18](Cl)([CH3:20])[CH3:19])([CH3:17])[CH3:16].N1C=CN=C1.C(OCC)(=O)C>CN(C=O)C.O>[C:10]([C:4]1[CH:3]=[C:2]([NH2:1])[N:6]([CH2:7][CH2:8][O:9][Si:18]([C:15]([CH3:17])([CH3:16])[CH3:14])([CH3:20])[CH3:19])[N:5]=1)([CH3:13])([CH3:12])[CH3:11]
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참가 물질

7

반응물 4

HCID 795ImidazoleHCID 8857Ethyl AcetateHCID 28928tert-Butyldimethylsilyl chlorideHCID 162278772-(5-amino-3-tert-butyl-1H-pyrazol-1-yl)ethan-1-ol

생성물 1

HCID 685465445-tert-Butyl-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-2H-pyrazol-3-ylamine수율 99%

시약·촉매·용매 2

HCID 962
Water
용매
HCID 6228Dimethylformamide용매

실험 절차

To 2-(5-amino-3-tert-butyl-pyrazol-1-yl)-ethanol (3.42 g, 0.019 mol), add TBDMSCl (3.38 g, 1.2 equiv.) and imidazole (3.18 g, 2.5 equiv.) in DMF (7 mL) and stir overnight at room temperature under N2. Dilute the reaction with ethyl acetate and water. Wash the organic layer with water then saturated aqueous saturated sodium chloride and then dry over magnesium sulfate, filter, and concentrate in vacuo to give a solid (5.5 g, 99%) which is used without further purification. MS (ES), m/z 298 (M+1).

후처리

  1. additionDilute
  2. washWash the organic layer with water
  3. dry with materialsaturated aqueous saturated sodium chloride and then dry over magnesium sulfate
  4. filtrationfilter
  5. concentrationconcentrate in vacuo

출처 및 근거

ORD 기록
ord-e8707c278882408c8510530b8dd68d62
출처 데이터셋
uspto-grants-2010_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07666879B2

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