4-Methylmorpholine → Tert-butyl 4-(4-(ethylcarbamoyl)-2-methylphenyl)piperazine-1-carboxylate

HRID 44326

반응식

HRID 44326 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:22]=[CH:21][C:17]([C:18]([OH:20])=O)=[CH:16][C:15]=2[CH3:23])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[CH2:25]([NH2:27])[CH3:26].Cl.C(N=C=NCCCN(C)C)C.O.N1(O)C2C=CC=CC=2N=N1.CN1CCOCC1>CN(C=O)C.O>[CH2:25]([NH:27][C:18]([C:17]1[CH:21]=[CH:22][C:14]([N:11]2[CH2:10][CH2:9][N:8]([C:6]([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])[CH2:13][CH2:12]2)=[C:15]([CH3:23])[CH:16]=1)=[O:20])[CH3:26]

참가 물질

8

반응물 5

HCID 79724-MethylmorpholineHCID 11198Ethylamine hydrochlorideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 186632454-(4-(Tert-butoxycarbonyl)piperazin-1-yl)-3-methylbenzoic acid

생성물 1

HCID 58324366Tert-butyl 4-(4-(ethylcarbamoyl)-2-methylphenyl)piperazine-1-carboxylate수율 99.3%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

4-(4-(tert-butoxycarbonyl)piperazin-1-yl)-3-methylbenzoic acid (0.866 g, 2.70 mmol), ethylamine hydrochloride (0.264 g, 3.24 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (0.777 g, 4.05 mmol) and 1H-benzo[d][1,2,3]triazol-1-ol hydrate (0.621 g, 4.05 mmol) were suspended in DMF (Volume: 3.68 mL) and 4-methylmorpholine (1.486 mL, 13.52 mmol) was added. The reaction mixture was stirred at ambient temperature for 2 h. It was diluted with water (50 mL) and extracted with ethyl acetate (3×75 mL). The combined organic extracts were washed with 1N HCl (aq., 25 mL), NaHCO3 (sat. aq., 25 mL), water (25 mL), brine (25 mL), dried (MgSO4), concentrated in vacuo and dried under vacuum to afford tert-butyl 4-(4-(ethylcarbamoyl)-2-methylphenyl)piperazine-1-carboxylate (0.9327 g, 2.68 mmol, 99% yield) as a white solid. 1H NMR (DMSO-d6, 400 MHz): δ=8.24 (t, J=5.4 Hz, 1 H), 7.66 (d, J=1.8 Hz, 2 H), 7.03 (d, J=8.3 Hz, 1 H), 3.42-3.52 (m, 4H), 3.20-3.27 (m, 2 H), 2.78-2.87 (m, 4 H), 2.28 (s, 3 H), 1.43 (s, 9 H), 1.10 ppm (t, J=7.2 Hz, 3 H). ESI-MS: m/z 348.4 (M+H)+.

후처리

  1. extractionextracted with ethyl acetate (3×75 mL)
  2. washThe combined organic extracts were washed with 1N HCl (aq., 25 mL), NaHCO3 (sat. aq., 25 mL), water (25 mL), brine (25 mL)
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customdried under vacuum

출처 및 근거

ORD 기록
ord-578d5241b600467ab5bc5492aa1c2355
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08541417B2

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