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Potassium Carbonate → Pivaloyloxymethyl 5-(4,6-Dimethoxypyrimidin-2-yl)oxy-3-ethoxycarbonyl-2-methylbenzofuran-4-carboxylate

HRID 51996
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인쇄 미리보기

반응식

HRID 51996 반응식
[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[C:5]([O:11][C:12]2[C:26]([C:27]([OH:29])=[O:28])=[C:16]3[C:17]([C:21]([O:23][CH2:24][CH3:25])=[O:22])=[C:18]([CH3:20])[O:19][C:15]3=[CH:14][CH:13]=2)[N:4]=1.[C:30]([O:36][CH2:37]Cl)(=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH3:10][O:9][C:7]1[CH:8]=[C:3]([O:2][CH3:1])[N:4]=[C:5]([O:11][C:12]2[C:26]([C:27]([O:29][CH2:37][O:36][C:30](=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32])=[O:28])=[C:16]3[C:17]([C:21]([O:23][CH2:24][CH3:25])=[O:22])=[C:18]([CH3:20])[O:19][C:15]3=[CH:14][CH:13]=2)[N:6]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 87885Chloromethyl pivalateHCID 199627615-(4,6-Dimethoxypyrimidin-2-yl)oxy-3-ethoxycarbonyl-2-methylbenzofuran-4-carboxylic acid

생성물 1

HCID 54153268Pivaloyloxymethyl 5-(4,6-Dimethoxypyrimidin-2-yl)oxy-3-ethoxycarbonyl-2-methylbenzofuran-4-carboxylate수율 84%

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

실험 절차

A mixture comprising 0.40 g of 5-(4,6-dimethoxypyrimidin-2-yl)oxy-3-ethoxycarbonyl-2-methylbenzofuran-4-carboxylic acid, 0.26 g of chloromethyl pivalate and 0.21 g of potassium carbonate in 20 ml of N,N-dimethylformamide, was stirred at room temperature for 6 hours, then poured into ice 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 0.43 g (yield: 84%) of the desired compound.

후처리

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

출처 및 근거

ORD 기록
ord-265411a67d4e43cd99880870f303237a
출처 데이터셋
uspto-grants-1997_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05616537

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