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Water → 3-[4-(Butoxycarbonylmethoxy)-2-fluoro5-nitrophenyl]-1-methyl-6-trifluoromethyl-2-oxo-1,2-dihydropyrazine

HRID 849923
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HRID 849923 반응식
[F:1][C:2]1[CH:7]=[C:6](F)[C:5]([N+:9]([O-:11])=[O:10])=[CH:4][C:3]=1[C:12]1[C:13](=[O:23])[N:14]([CH3:22])[C:15]([C:18]([F:21])([F:20])[F:19])=[CH:16][N:17]=1.[F-].[K+].[C:26]([O:30][CH2:31][CH2:32][CH2:33][CH3:34])(=[O:29])[CH2:27][OH:28].O>O1CCOCC1>[CH2:31]([O:30][C:26]([CH2:27][O:28][C:6]1[C:5]([N+:9]([O-:11])=[O:10])=[CH:4][C:3]([C:12]2[C:13](=[O:23])[N:14]([CH3:22])[C:15]([C:18]([F:20])([F:21])[F:19])=[CH:16][N:17]=2)=[C:2]([F:1])[CH:7]=1)=[O:29])[CH2:32][CH2:33][CH3:34]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 962WaterHCID 81882Butyl GlycolateHCID 522689Potassium FluorideHCID 193654873-(2,4-Difluoro-5-nitrophenyl)-1-methyl-6-trifluoromethyl-2-oxo-1,2-dihydropyrazine2회

생성물 1

HCID 193654963-[4-(Butoxycarbonylmethoxy)-2-fluoro5-nitrophenyl]-1-methyl-6-trifluoromethyl-2-oxo-1,2-dihydropyrazine수율 82.4%

시약·촉매·용매 1

HCID 312751,4-Dioxane용매

실험 절차

Then, 7.61 g of 3-(2,4-difluoro-5-nitrophenyl)-1-methyl-6-trifluoromethyl-2-oxo-1,2-dihydropyrazine (present compound 1-16) was dissolved in 10 ml of 1,4-dioxane, to which 5.28 g of potassium fluoride and 9.0 g of butyl glycolate were added, and the mixture was heated under reflux for 1.5 hours. After completion of the reaction, the reaction mixture was left cooling to room temperature. The reaction mixture was poured into water, followed by extraction with ethyl acetate. The organic layer was washed with saturated sodium chloride solution, dried with anhydrous magnesium sulfate, and concentrated. The residue was subjected to silica gel column chromatography, which afforded 8.37 g (yield, 82%) of 3-[4-(butoxycarbonylmethoxy)-2-fluoro5-nitrophenyl]-1-methyl-6-trifluoromethyl-2-oxo-1,2-dihydropyrazine (the present compound depicted below; m.p., 109.5° C.). ##STR40##

후처리

  1. additionwere added
  2. temperaturethe mixture was heated
  3. temperatureunder reflux for 1.5 hours
  4. customAfter completion of the reaction
  5. waitthe reaction mixture was left
  6. extractionfollowed by extraction with ethyl acetate
  7. washThe organic layer was washed with saturated sodium chloride solution
  8. dry with materialdried with anhydrous magnesium sulfate
  9. concentrationconcentrated

출처 및 근거

ORD 기록
ord-6a9cb36e4f8242a090d57dc7fe78646f
출처 데이터셋
uspto-grants-2000_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06015774

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