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Water → Methyl 5-(4,6-Dimethoxypyrimidin-2-yl)oxy-2-ethoxy-2,3-dihydrobenzofuran-4-carboxylate

HRID 51998
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인쇄 미리보기

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HRID 51998 반응식
[CH2:1]([O:3][CH:4]1[CH2:8][C:7]2=[C:9]([C:14]([O:16][CH3:17])=[O:15])[C:10]([OH:13])=[CH:11][CH:12]=[C:6]2[O:5]1)[CH3:2].[CH3:18][O:19][C:20]1[CH:25]=[C:24]([O:26][CH3:27])[N:23]=[C:22](S(C)(=O)=O)[N:21]=1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[CH3:18][O:19][C:20]1[CH:25]=[C:24]([O:26][CH3:27])[N:23]=[C:22]([O:13][C:10]2[C:9]([C:14]([O:16][CH3:17])=[O:15])=[C:7]3[CH2:8][CH:4]([O:3][CH2:1][CH3:2])[O:5][C:6]3=[CH:12][CH:11]=2)[N:21]=1
참가 물질반응 조건실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 8383634,6-Dimethoxy-2-(methylsulfonyl)pyrimidineHCID 19077264Methyl 2-ethoxy-5-hydroxy-2,3-dihydrobenzofuran-4-carboxylate

생성물 1

HCID 19962778Methyl 5-(4,6-Dimethoxypyrimidin-2-yl)oxy-2-ethoxy-2,3-dihydrobenzofuran-4-carboxylate수율 95%

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

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온도
100 °C

실험 절차

A mixture comprising 1.0 g of methyl 2-ethoxy-5-hydroxy-2,3-dihydrobenzofuran-4-carboxylate, 1.0 g of 4,6-dimethoxy-2-methylsulfonylpyrimidine and 0.78 g of potassium carbonate in 30 ml of N,N-dimethylformamide, was heated and stirred at 100° C. for two hours. The mixture was returned to room temperature, then poured into water and extracted with ethyl acetate. The organic layer was washed with water and then dried over anhydrous sodium sulfate. It was concentrated under reduced pressure, and the oily substance thereby obtained was purified by silica gel column chromatography (n-hexane/ethyl acetate=4/1) to obtain 1.5 g (yield: 95%) of the desired compound.

후처리

  1. temperaturewas heated
  2. customwas returned to room temperature
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed with water
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationIt was concentrated under reduced pressure
  7. customthe oily substance thereby obtained
  8. customwas purified by silica gel column chromatography (n-hexane/ethyl acetate=4/1)

출처 및 근거

ORD 기록
ord-877c567981af4e73ad343d16d8173690
출처 데이터셋
uspto-grants-1997_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05616537

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