Potassium Carbonate → 1-Ethyl-4-(3-fluoro-4-nitro-phenyl)-piperazine

HRID 409694노트

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HRID 409694 반응식
[CH2:1]([N:3]1[CH2:8][CH2:7][NH:6][CH2:5][CH2:4]1)[CH3:2].[F:9][C:10]1[CH:15]=[C:14](F)[CH:13]=[CH:12][C:11]=1[N+:17]([O-:19])=[O:18].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[CH2:1]([N:3]1[CH2:8][CH2:7][N:6]([C:14]2[CH:13]=[CH:12][C:11]([N+:17]([O-:19])=[O:18])=[C:10]([F:9])[CH:15]=2)[CH2:5][CH2:4]1)[CH3:2]

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 679672,4-DifluoronitrobenzeneHCID 791961-Ethylpiperazine

생성물 1

HCID 691789001-Ethyl-4-(3-fluoro-4-nitro-phenyl)-piperazine

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

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온도
100 °C

실험 절차

N-Ethylpiperazine (4.8 mL, 37.7 mmol, 1.2 equiv) is added to a mixture of 2,4-difluoronitrobenzene (5 g, 31.4 mmol) and potassium carbonate (8.7 g, 62.9 mmol, 2 equiv) in DMF (50 mL). The reaction mixture is stirred at 100° C. for 6 h, allowed to cool to RT, diluted with H2O and extracted with EtOAc. The organic phase is washed with brine, dried (Na2SO4), filtered and concentrated. The residue is purified by silica gel column chromatography (DCM/MeOH+1% NH3aq, 95:5) to provide the title compound as a yellow oil: ES-MS: 254.1 [MH]+; TLC: Rf=0.67 (DCM/MeOH+1% NH3aq, 95:5).

후처리

  1. temperatureto cool to RT
  2. extractionextracted with EtOAc
  3. washThe organic phase is washed with brine
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue is purified by silica gel column chromatography (DCM/MeOH+1% NH3aq, 95:5)

출처 및 근거

ORD 기록
ord-99d21ec3fa364b798f4f19a5f0c46cc9
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08759517B2

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