Potassium Carbonate → 2-(4-Benzyl-1-(5-methoxy-2-nitrophenyl)piperazin-2-yl)acetic acid

HRID 80494

반응식

HRID 80494 반응식
[CH2:1]([N:8]1[CH2:13][CH2:12][NH:11][CH:10]([CH2:14][C:15]([O:17]C)=[O:16])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.F[C:20]1[CH:25]=[C:24]([O:26][CH3:27])[CH:23]=[CH:22][C:21]=1[N+:28]([O-:30])=[O:29].C(=O)([O-])[O-].[K+].[K+].C1OCCOCCOCCOCCOCCOC1>C(#N)C.O>[CH2:1]([N:8]1[CH2:13][CH2:12][N:11]([C:20]2[CH:25]=[C:24]([O:26][CH3:27])[CH:23]=[CH:22][C:21]=2[N+:28]([O-:30])=[O:29])[CH:10]([CH2:14][C:15]([OH:17])=[O:16])[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

7

반응물 4

HCID 11430Potassium CarbonateHCID 2855718-Crown-6HCID 5656543-Fluoro-4-nitroanisoleHCID 156654662-Piperazineacetic acid, 4-(phenylmethyl)-, methyl ester

생성물 1

HCID 667698072-(4-Benzyl-1-(5-methoxy-2-nitrophenyl)piperazin-2-yl)acetic acid

시약·촉매·용매 2

HCID 962Water용매HCID 6342Acetonitrile용매

반응 조건

온도
90 °C

실험 절차

To a solution of Example 12C (0.907 g, 3.65 mmol) in acetonitrile (11.69 mL) was added 2-fluoro-4-methoxy-1-nitrobenzene (0.50 g, 2.92 mmol) and potassium carbonate (2.019 g, 14.61 mmol) in water (2.92 mL) followed by 18-crown-6 (0.039 g, 0.146 mmol), and the mixture was heated with an oil bath at 90° C. (reflux) for 24 hours. The solvent was evaporated and water was added followed by dichloromethane. The water phase was washed three times with dichloromethane to remove starting material and then acidified with 1N HCl until pH=1. The acid product was extracted three times with dichloromethane, dried quickly with sodium sulfate and concentrated to give the title compound. MS (ESI) m/z 386.1 (M+H)+.

후처리

  1. temperature(reflux) for 24 hours
  2. customThe solvent was evaporated
  3. additionwater was added
  4. washThe water phase was washed three times with dichloromethane
  5. customto remove
  6. extractionThe acid product was extracted three times with dichloromethane
  7. dry with materialdried quickly with sodium sulfate
  8. concentrationconcentrated

출처 및 근거

ORD 기록
ord-1a25bfed7a854408a47cbd41ae7cce3d
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08846663B2

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