Diisopropylethylamine → tert-butyl 4-(N-(4-chlorophenyl)-N-(2-(diethylamino)ethyl)carbamoyl)piperazine-1-carboxylate

HRID 388304

Reaktionsgleichung

Reaktionsgleichung von HRID 388304
Cl[C:2]([N:4]1[CH2:9][CH2:8][N:7]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:6][CH2:5]1)=[O:3].[Cl:17][C:18]1[CH:23]=[CH:22][C:21]([NH:24][CH2:25][CH2:26][N:27]([CH2:30][CH3:31])[CH2:28][CH3:29])=[CH:20][CH:19]=1.C(N(CC)C(C)C)(C)C>C(Cl)Cl>[Cl:17][C:18]1[CH:19]=[CH:20][C:21]([N:24]([CH2:25][CH2:26][N:27]([CH2:30][CH3:31])[CH2:28][CH3:29])[C:2]([N:4]2[CH2:9][CH2:8][N:7]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:6][CH2:5]2)=[O:3])=[CH:22][CH:23]=1

Komponenten

5

Edukt 3

HCID 81531DiisopropylethylamineHCID 2245014-chloro-N-(2-(diethylamino)ethyl)anilineHCID 11334154Tert-butyl 4-(chlorocarbonyl)piperazine-1-carboxylate

Produkt 1

HCID 67134222tert-butyl 4-(N-(4-chlorophenyl)-N-(2-(diethylamino)ethyl)carbamoyl)piperazine-1-carboxylateAusbeute 18,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

tert-Butyl 4-chlorocarbonyl-piperazine-1-carboxylate (0.97 g, 3.9 mmol) was added to a solution of 4-chloro-N-(2-(diethylamino)ethyl)benzenamine (884 mg, 3.9 mmol) and N,N-diisopropylethylamine (1.9 mL, 11.7 mmol) in DCM (8 mL). The reaction mixture was heated at reflux for 20 hours. The mixture was cooled to room temperature, quenched with saturated NH4Cl (10 mL), and extracted with DCM (2×20 mL). The combined organics were dried (Na2SO4), filtered and concentrated. The crude product was purified by silica gel chromatography to give tert-butyl 4-(N-(4-chlorophenyl)-N-(2-(diethylamino)ethyl)carbamoyl)piperazine-1-carboxylate (311 mg, 18%). MS (APCI+) [M+H]+439.4. 1H NMR (CDCl3, 400 MHz) 7.29 (d, J=8.8 Hz, 2H), 7.09 (d, J=8.8 Hz, 2H), 3.70-3.66 (m, 2H), 3.45-3.42 (m, 2H), 3.24-3.21 (m, 4H), 3.15-3.12 (m, 2H), 2.61-2.57 (m, 2H), 2.52 (q, J=7.2 Hz, 4H), 1.42 (s, 9H), 0.99 (t, J=7.2 Hz, 6H).

Aufarbeitung

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 20 hours
  3. customquenched with saturated NH4Cl (10 mL)
  4. extractionextracted with DCM (2×20 mL)
  5. dry with materialThe combined organics were dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude product was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-d22039dd0864450b8f99196153a7f94e
Quelldatensatz
uspto-grants-2013_02
Patentnummer
US08377937B2

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