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Water → (2E)-1-[7-(cyclopentylamino)-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]-3-(dimethylamino)-2-propen-1-one

HRID 8492
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HRID 8492 반응식
[CH:1]1([NH:6][C:7]2[N:12]3[N:13]=[C:14]([C:19]4[CH:24]=[CH:23][C:22]([F:25])=[CH:21][CH:20]=4)[C:15]([C:16](=[O:18])[CH3:17])=[C:11]3[CH:10]=[CH:9][CH:8]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.C(OC(=O)C)C.O.CO[CH:35](OC)[N:36]([CH3:38])[CH3:37]>>[CH:1]1([NH:6][C:7]2[N:12]3[N:13]=[C:14]([C:19]4[CH:20]=[CH:21][C:22]([F:25])=[CH:23][CH:24]=4)[C:15]([C:16](=[O:18])/[CH:17]=[CH:35]/[N:36]([CH3:38])[CH3:37])=[C:11]3[CH:10]=[CH:9][CH:8]=2)[CH2:2][CH2:3][CH2:4][CH2:5]1
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참가 물질

5

반응물 4

HCID 962WaterHCID 8857Ethyl AcetateHCID 78373Dimethylformamide dimethyl acetalHCID 121025001-[7-(Cyclopentylamino)-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]ethanone

생성물 1

HCID 11372773(2E)-1-[7-(cyclopentylamino)-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]-3-(dimethylamino)-2-propen-1-one수율 99%

실험 절차

A solution of 1-[7-(cyclopentylamino)-2-(4-fluorophenyl)pyrazolo[1,5-α]pyridin-3-yl]ethanone (3.1 g, 9.2 mmol) in N,N-dimethylformamide dimethyl acetal (25 mL) was heated to reflux for 6 days. The mixture was cooled to room temperature, ethylacetate was added followed by water. The organic layer was washed with brine. The aqueous layer was extracted with ethyl acetate and the combined organics were dried over magnesium sulfate. Filtration and concentration followed by flash chromatography (ethyl acetate) provided (2E)-1-[7-(cyclopentylamino)-2-(4-fluorophenyl)pyrazolo[1,5-α]pyridin-3-yl]-3-(dimethylamino)-2-propen-1-one (3.6 g, 99%) as a tinted oil. 1H NMR (CDCl3): δ 7.73–7.61 (m, 4 H), 7.32 (t, 1 H), 7.14 (t, 2 H), 6.03 (d, 1 H), 5.96 (d, 1 H), 5.05 (d, 1 H), 3.99 (m, 1 H), 5.15–2.42 (broad, 6 H), 2.19–2.08 (m, 2 H), 1.86–1.62 (m, 6 H); 19F NMR (CDCl3) δ −113.75; MS m/ 393 (M+1).

후처리

  1. temperatureto reflux for 6 days
  2. washThe organic layer was washed with brine
  3. extractionThe aqueous layer was extracted with ethyl acetate
  4. dry with materialthe combined organics were dried over magnesium sulfate
  5. filtrationFiltration and concentration

출처 및 근거

ORD 기록
ord-26ae1657dff14b76b8058061e5b513d1
출처 데이터셋
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07087618B2

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