4-Methylpyridine → 1-(2-Furyl)-2-pyridin-4-ylethanone

HRID 457871노트

반응식

HRID 457871 반응식
C[Si]([N-][Si](C)(C)C)(C)C.[Li+].[N:11]1[CH:16]=[CH:15][C:14]([CH3:17])=[CH:13][CH:12]=1.[O:18]1[CH:22]=[CH:21][CH:20]=[C:19]1[C:23](OCC)=[O:24].CCCCCC>O1CCCC1>[O:18]1[CH:22]=[CH:21][CH:20]=[C:19]1[C:23](=[O:24])[CH2:17][C:14]1[CH:15]=[CH:16][N:11]=[CH:12][CH:13]=1

참가 물질

6

반응물 4

HCID 79634-MethylpyridineHCID 8058HexaneHCID 11980Ethyl 2-furoateHCID 2733832Lithium Hexamethyldisilazide

생성물 1

HCID 227080301-(2-Furyl)-2-pyridin-4-ylethanone수율 70.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

Lithium bis(trimethylsilyl)amide (100 mL, 100 mmol) was added dropwise over 1 hour to a solution of 4-picoline (4.6 g, 49.4 mmol) and ethyl 2-furancarboxylate (7.7 g, 54.9 mmol) in tetrahydrofuran (40 mL) at 0° C. in a nitrogen atmosphere, followed by stirring as such for 2 hours. Hexane (140 mL) was added to the reaction solution, and the resulting crystals were collected by filtration. The resulting crystals were dissolved in ethyl acetate and an aqueous saturated ammonium chloride solution. The organic layer was washed with an aqueous saturated ammonium chloride solution (×2) and brine, dried over anhydrous sodium sulfate, and concentrated. Hexane was added to the residue, and the resulting precipitates were collected by filtration and washed with hexane, to give the title compound (6.5 g, 70%) as a pale yellow solid.

후처리

  1. filtrationthe resulting crystals were collected by filtration
  2. dissolutionThe resulting crystals were dissolved in ethyl acetate
  3. washThe organic layer was washed with an aqueous saturated ammonium chloride solution (×2) and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated
  6. additionHexane was added to the residue
  7. customthe resulting precipitates
  8. filtrationwere collected by filtration
  9. washwashed with hexane

출처 및 근거

ORD 기록
ord-d48f401d325e4121999bb6a628ce2d96
출처 데이터셋
uspto-grants-2007_03
특허 번호
US07189717B2

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