Acetic Acid → 1-Butyl-4-(2-cyclooct-1-enylphenyl)piperazine

HRID 2218805

Reaktionsgleichung

Reaktionsgleichung von HRID 2218805
[C:1]1([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=2[N:15]2[CH2:20][CH2:19][NH:18][CH2:17][CH2:16]2)[CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH:2]=1.[CH:21](=O)[CH2:22][CH2:23][CH3:24].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C.C(=O)([O-])O.[Na+]>O1CCCC1.C(OCC)(=O)C>[CH2:21]([N:18]1[CH2:17][CH2:16][N:15]([C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=2[C:1]2[CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH:2]=2)[CH2:20][CH2:19]1)[CH2:22][CH2:23][CH3:24]

Komponenten

8

Edukt 5

HCID 176Acetic AcidHCID 261ButanalHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 692189821-(2-Cyclooct-1-enylphenyl)piperazine

Produkt 1

HCID 692182621-Butyl-4-(2-cyclooct-1-enylphenyl)piperazineAusbeute 74,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a solution of 1-(2-cyclooct-1-enylphenyl)piperazine (11 mg, 0.0407 mmol) produced in Example (46a) in tetrahydrofuran (1 mL) were added butyraldehyde (0.0047 mL, 0.0529 mmol), sodium triacetoxyborohydride (11.2 mg, 0.0529 mmol) and acetic acid (0.0044 mL, 0.0773 mmol), followed by stirring for 14 hours and 20 minutes at room temperature. Saturated aqueous solution of sodium hydrogencarbonate was added to the reaction mixture and extraction was performed three times with ethyl acetate. The organic layer was concentrated to produce a residue, which was purified by NH silica gel column chromatography (ethyl acetate/heptane) to give 9.9 mg of 1-butyl-4-(2-cyclooct-1-enylphenyl)piperazine as a colorless oil.

Aufarbeitung

  1. concentrationThe organic layer was concentrated
  2. customto produce a residue, which
  3. customwas purified by NH silica gel column chromatography (ethyl acetate/heptane)

Quellen und Nachweise

ORD-Eintrag
ord-c60c9c39b75d4a1dbf0bf0ddaeee3081
Quelldatensatz
uspto-grants-2008_08
Patentnummer
US07410971B2

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