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18-Crown-6 → 3-[2-{3-(Tert-butyldimethylsilyloxy)cyclohexyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

HRID 276940
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HRID 276940 반응식
[O:1]=[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[N:10][N:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=23)=[N:4][NH:3]1.[Si:23]([O:30][CH:31]1[CH2:36][CH2:35][CH2:34][CH:33](I)[CH2:32]1)([C:26]([CH3:29])([CH3:28])[CH3:27])([CH3:25])[CH3:24].CC(C)([O-])C.[K+].C1OCCOCCOCCOCCOCCOC1>CN(C)C=O.C(OCC)(=O)C.CCCCCC>[Si:23]([O:30][CH:31]1[CH2:32][CH2:33][CH2:34][CH:35]([N:3]2[C:2](=[O:1])[CH:7]=[CH:6][C:5]([C:8]3[C:9]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=4)=[N:10][N:11]4[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=34)=[N:4]2)[CH2:36]1)([C:26]([CH3:29])([CH3:28])[CH3:27])([CH3:25])[CH3:24]
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참가 물질

8

반응물 4

HCID 2855718-Crown-6HCID 105894183(2H)-Pyridazinone, 6-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)-HCID 226291881-(Tert-butyldimethylsilyl)oxy-3-iodocyclohexaneHCID 23665647Potassium tert-butoxide

생성물 1

HCID 226291913-[2-{3-(Tert-butyldimethylsilyloxy)cyclohexyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine수율 15.2%

시약·촉매·용매 3

HCID 6228Dimethylformamide용매HCID 8058Hexane용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of 3-(3-oxo-2,3-dihydropyridazin-6-yl)-2-phenylpyrazolo[1,5-a]pyridine (870 mg), 1-(tert-butyldimethylsilyl)oxy-3-iodocyclohexane (1.5 g), potassium tert-butoxide (472 mg) and 18-crown-6 (80mg) in N,N-dimethylformamide (10 ml) was stirred for 2 hours at room temperature. A reaction mixture was diluted with a mixture of ethyl acetate (150 ml) and n-hexane (50 ml), which was washed in turn with water (50-ml), 1N-aqueous sodium hydroxide solution (50 ml×3) and saturated sodium chloride in water (50 ml×2), and dried over magnesium sulfate. Evaporation of the solvent gave a residue, which was chromatographed on silica gel (80 ml) eluting in-turn with 25%, 33% and 50% ethyl acetate in dichloromethane to give 3-[2-{3-(tert-butyldimethylsilyloxy)cyclohexyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]-pyridine (0.23 g).

후처리

  1. washwas washed in turn with water (50-ml), 1N-aqueous sodium hydroxide solution (50 ml×3) and saturated sodium chloride in water (50 ml×2)
  2. dry with materialdried over magnesium sulfate
  3. customEvaporation of the solvent
  4. customgave a residue, which
  5. customwas chromatographed on silica gel (80 ml)
  6. washeluting in-turn with 25%, 33% and 50% ethyl acetate in dichloromethane

출처 및 근거

ORD 기록
ord-82b390cbd1d6484bb8756cc9b5a561d4
출처 데이터셋
uspto-grants-2002_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06355640B1

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