Diisopropylethylamine → tert-Butyl 4-(3,3,3-trifluoropropyl)-1-piperazine-carboxylate

HRID 2416651

Reaktionsgleichung

Reaktionsgleichung von HRID 2416651
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)C(C)C)(C)C.Br[CH2:24][CH2:25][C:26]([F:29])([F:28])[F:27].C(=O)([O-])O.[Na+]>CN(C)C=O>[F:27][C:26]([F:29])([F:28])[CH2:25][CH2:24][N:11]1[CH2:12][CH2:13][N:8]([C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:7])[CH2:9][CH2:10]1

Komponenten

6

Edukt 4

HCID 81531DiisopropylethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 516892Sodium BicarbonateHCID 27251143-Bromo-1,1,1-trifluoropropane

Produkt 1

HCID 22633053tert-Butyl 4-(3,3,3-trifluoropropyl)-1-piperazine-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of 1-(tert-butoxycarbonyl)piperazine (5.00 g) and N,N-diisopropylethylamine (4.68 ml) in N,N-dimethylformamide (13 ml) was added 1-bromo-3,3,3-trifluoropropane (5.00 ml) at 60° C. The mixture was stirred at 60° C. for 4 hours. The reaction mixture was poured into saturated aqueous sodium hydrogencarbonate solution and extracted with hexane. The organic layer was washed successively with saturated aqueous ammonium chloride solution, aqueous sodium hydrogencarbonate solution and brine, dried over anhydrous magnesium sulfate and concentrated to give the title compound (5.38 g) as a pale yellow solid.

Aufarbeitung

  1. extractionextracted with hexane
  2. washThe organic layer was washed successively with saturated aqueous ammonium chloride solution, aqueous sodium hydrogencarbonate solution and brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-facdc45277a04f8898a6d24147b75bce
Quelldatensatz
uspto-grants-2004_11
Patentnummer
US06825200B1

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