Phenolate Sodium → 2-(4-fluorophenyl)-6-hydroxy-3-(2-phenoxypyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

HRID 1061627

반응식

HRID 1061627 반응식
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9](=[O:33])[N:10]3[CH2:25][CH:24]([O:26]C(=O)C(C)(C)C)[CH2:23][N:11]3[C:12]=2[C:13]2[CH:18]=[CH:17][N:16]=[C:15](S(C)(=O)=O)[N:14]=2)=[CH:4][CH:3]=1.[C:34]1([O-:40])[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1.[Na+]>C1COCC1>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9](=[O:33])[N:10]3[CH2:25][CH:24]([OH:26])[CH2:23][N:11]3[C:12]=2[C:13]2[CH:18]=[CH:17][N:16]=[C:15]([O:40][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)[N:14]=2)=[CH:4][CH:3]=1

참가 물질

4

반응물 2

HCID 4445035Phenolate SodiumHCID 207247412,2-dimethyl-propionic acid 6-(4-fluorophenyl)-7-(2-methane-sulfonyl-pyrimidin-4-y)-5-oxo-2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-2-yl ester

생성물 1

HCID 102725602-(4-fluorophenyl)-6-hydroxy-3-(2-phenoxypyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one수율 21%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

A solution of 2,2-dimethyl-propionic acid 6-(4-fluorophenyl)-7-(2-methane-sulfonyl-pyrimidin-4-yl)-5-oxo-2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-2-yl ester, 35, (50 mg, 0.105 mmol) in THF (1 mL) is slowly cannulated into a solution of sodium phenolate in THF (1 mL) at 0° C. The cooling bath is removed and the reaction stirred at room temperature for 1 hour. The reaction is quenched with NH4Cl (sat. aq.) (500 μL). The reaction mixture is concentrated in vacuo and the residue diluted taken up in ethyl acetate (15 mL). The solution is washed with water (20 mL) and a 5% aqueous Na2CO3 (20 mL). The combined aqueous layers are extracted with ethyl acetate (25 mL) and brine (20 mL), dried, filtered and concentrated in vacuo. The crude material is purified over silica (100% ethyl acetate to 5% to 10% to 20% methyl alcohol/ethyl acetate) to afford 9 mg (21% yield) of the desired product as a yellow solid. 1H NMR (300 MHz, CDCl3) δ 8.43 (d, J=5.2 Hz, 1H), 7.46 (t, J=7.8 Hz, 2H), 7.31-7.27 (m, 3H), 7.19 (d, J=8.2 Hz, 2H), 7.03 (t, J=8.6 Hz, 2H), 6.80 (d, J=5.2 Hz, 1H), 5.41 (br s, 1H), 4.82 (m, 1H), 4.23 (d, J=12.4 Hz, 1H), 3.95-3.85 (m, 2H), 3.76 (dd, J=12.4, 4.4 Hz, 1H); HRMS m/z calcd for C22H18FN4O3 (MH+) 405.1363, found 405.1365.

후처리

  1. customThe cooling bath is removed
  2. customThe reaction is quenched with NH4Cl (sat. aq.) (500 μL)
  3. concentrationThe reaction mixture is concentrated in vacuo
  4. additionthe residue diluted
  5. washThe solution is washed with water (20 mL)
  6. extractionThe combined aqueous layers are extracted with ethyl acetate (25 mL) and brine (20 mL)
  7. customdried
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe crude material is purified over silica (100% ethyl acetate to 5% to 10% to 20% methyl alcohol/ethyl acetate)

출처 및 근거

ORD 기록
ord-08907f6af4824b038fa93c787cbd011c
출처 데이터셋
uspto-grants-2005_11
특허 번호
US06960593B2

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