4-Methylmorpholine → 1,1-Dimethylethyl 4-[[2-(4-chlorophenyl)acetyl]amino]-1-piperidinecarboxylate

HRID 557037Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 557037
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH2:14])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:15][C:16]1[CH:21]=[CH:20][C:19]([CH2:22][C:23](O)=[O:24])=[CH:18][CH:17]=1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CN1CCOCC1>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:23](=[O:24])[CH2:22][C:19]2[CH:20]=[CH:21][C:16]([Cl:15])=[CH:17][CH:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Komponenten

7

Edukt 5

HCID 79724-MethylmorpholineHCID 15880(4-Chlorophenyl)acetic acidHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 12682914-Amino-1-Boc-piperidine

Produkt 1

HCID 470691701,1-Dimethylethyl 4-[[2-(4-chlorophenyl)acetyl]amino]-1-piperidinecarboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 4-amino-piperidine 1-carboxylic acid tert-butyl ester (0.44 g, 2.2 mmol) and 4-chlorophenyl acetic acid (0.34 g, 2 mmol) in dichloromethane (10 mL) were added EDCI (0.55 g, 2.8 mmol), HOBT (0.42 g, 2.8 mmol) and N-methylmorpholine (0.6 g, 6 mmol) and the resulting mixture was stirred at room temperature overnight. The reaction mixture was concentrated in vacuo, diluted with dichloromethane and extracted with saturated aqueous sodium bicarbonate solution. The aqueous layer was back extracted twice with dichloromethane. The combined organics were dried over sodium sulfate and concentrated in vacuo. Crude product was purified using a short plug of silica gel using ethyl acetate to give the desired product 1H-NMR (CDCL3) δ: 1.15-1.25 (2H, m), 1.40 (9H, s), 1.80-1.90 (2H, m), 2.85 (2H, dd), 3.5 (2H, s), 4.00 (1H, br s), 5.20 (1H, d), 7.15-7.35 (4H, m). ESI-MS m/z: 353 (M+1), UV retention time: 2.47 min.

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. additiondiluted with dichloromethane
  3. extractionextracted with saturated aqueous sodium bicarbonate solution
  4. extractionThe aqueous layer was back extracted twice with dichloromethane
  5. dry with materialThe combined organics were dried over sodium sulfate
  6. concentrationconcentrated in vacuo
  7. customCrude product was purified

Quellen und Nachweise

ORD-Eintrag
ord-e87300b2df27445e8b224657481bb763
Quelldatensatz
uspto-grants-2011_11
Patentnummer
US08058287B2

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