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Sodium Carbonate → 6-Difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

HRID 1280415
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HRID 1280415 반응식
Br[C:2]1[C:3]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([F:21])[CH:16]=2)=[N:4][N:5]2[C:10]=1[CH:9]=[CH:8][C:7]([O:11][CH:12]([F:14])[F:13])=[N:6]2.C(=O)([O-])[O-].[Na+].[Na+].[CH3:28][S:29]([C:32]1[CH:37]=[CH:36][C:35](B(O)O)=[CH:34][CH:33]=1)(=[O:31])=[O:30]>CN(C=O)C.C(OCC)(=O)C>[F:13][CH:12]([F:14])[O:11][C:7]1[CH:8]=[CH:9][C:10]2[N:5]([N:4]=[C:3]([C:15]3[CH:20]=[CH:19][CH:18]=[C:17]([F:21])[CH:16]=3)[C:2]=2[C:35]2[CH:36]=[CH:37][C:32]([S:29]([CH3:28])(=[O:31])=[O:30])=[CH:33][CH:34]=2)[N:6]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 3

HCID 10340Sodium CarbonateHCID 27343644-(Methanesulfonyl)phenylboronic acidHCID 225623333-Bromo-6-difluoromethoxy-2-(3-fluoro-phenyl)-pyrazolo[1,5-b]pyridazine

생성물 1

HCID 99325596-Difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine수율 38.1%

시약·촉매·용매 2

HCID 6228
Dimethylformamide
용매
HCID 8857Ethyl Acetate용매

실험 절차

To a stirred solution of 3-bromo-6-difluoromethoxy-2-(3-fluoro-phenyl)-pyrazolo[1,5-b]pyridazine (286 mg) in DMF(20 ml) was added 2N aq sodium carbonate (10 ml). To this mixture was added 4-methanesulfonyl-phenylboronic acid (180 mg) and tetrakis triphenylphosphine palladium(0) (34 mg). The resulting mixture was stirred and heated to reflux for 18 hours. The cooled reaction mixture was diluted with ethyl acetate (300 ml) and the organic solution washed with water (10×30 ml) and brine (30 ml), dried (Na2SO4) and evaporated to give a gum which was purified by flash column chromatography with chloroform:ethyl acetate (50:1 to 5:1) as eluant. Combination of appropriate fractions and concentration gave the title compound as an off-white solid (132 mg, 37%).

후처리

  1. temperatureheated
  2. temperatureto reflux for 18 hours
  3. customThe cooled reaction mixture
  4. washthe organic solution washed with water (10×30 ml) and brine (30 ml)
  5. dry with materialdried (Na2SO4)
  6. customevaporated
  7. customto give a gum which
  8. customwas purified by flash column chromatography with chloroform:ethyl acetate (50:1 to 5:1) as eluant
  9. concentrationCombination of appropriate fractions and concentration

출처 및 근거

ORD 기록
ord-f5f85381fa3e49c8973a3323e21f5ca1
출처 데이터셋
uspto-grants-2002_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06451794B1

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