Dimethylformamide dimethyl acetal → 4-Dimethylamino-3-(2-methylsulfanyl-pyrimidin-4-yl)-but-3-en-2-one

HRID 1397164노트

반응식

HRID 1397164 반응식
[CH3:1][S:2][C:3]1[N:8]=[C:7]([CH2:9][C:10](=[O:12])[CH3:11])[CH:6]=[CH:5][N:4]=1.[CH3:13][N:14]([CH:16](OC)OC)[CH3:15]>>[CH3:13][N:14]([CH3:16])[CH:15]=[C:9]([C:7]1[CH:6]=[CH:5][N:4]=[C:3]([S:2][CH3:1])[N:8]=1)[C:10](=[O:12])[CH3:11]

참가 물질

3

반응물 2

HCID 78373Dimethylformamide dimethyl acetalHCID 596066061-(2-Methylsulfanyl-pyrimidin-4-yl)-propan-2-one

생성물 1

HCID 679835344-Dimethylamino-3-(2-methylsulfanyl-pyrimidin-4-yl)-but-3-en-2-one수율 49.3%

반응 조건

온도
80 °C

실험 절차

1-(2-Methylsulfanyl-pyrimidin-4-yl)-propan-2-one (17) (1.93 g, 10.59 mmol) was taken up in DMF-DMA (20 mL, 149 mmol) and the resulting reaction was warmed to 80° C. and stirred for 2 hours. The solvent was evaporated and the crude residue partitioned between DCM and water. The organic layer was washed with brine, dried with sodium sulfate, and concentrated. The crude residue was purified by flash column chromatography with a gradient of 1-12% MeOH in DCM to give the desired product as a brown/orange oil (1.24 g, 49%). MS (ES+): m/z=238.2/239.3 (100/30) [MH+]. HPLC: tR=0.78 minute over 3 minutes. Purity: 100% [HPLC (LC/MS) at 220 nm].

후처리

  1. customthe resulting reaction
  2. customThe solvent was evaporated
  3. customthe crude residue partitioned between DCM and water
  4. washThe organic layer was washed with brine
  5. dry with materialdried with sodium sulfate
  6. concentrationconcentrated
  7. customThe crude residue was purified by flash column chromatography with a gradient of 1-12% MeOH in DCM

출처 및 근거

ORD 기록
ord-1802262de4f6431ab0ddef78dc52e80f
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08901147B2

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