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3-Furaldehyde → 1-[2-(4,4-Dimethylcyclohexyl)phenyl]-4-furan-3-ylmethylpiperazine

HRID 32185
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 32185
[CH3:1][C:2]1([CH3:20])[CH2:7][CH2:6][CH:5]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=2[N:14]2[CH2:19][CH2:18][NH:17][CH2:16][CH2:15]2)[CH2:4][CH2:3]1.[O:21]1[CH:25]=[CH:24][C:23]([CH:26]=O)=[CH:22]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>C(OCC)(=O)C.O1CCCC1>[CH3:1][C:2]1([CH3:20])[CH2:3][CH2:4][CH:5]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=2[N:14]2[CH2:19][CH2:18][N:17]([CH2:26][C:23]3[CH:24]=[CH:25][O:21][CH:22]=3)[CH2:16][CH2:15]2)[CH2:6][CH2:7]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 103513-FuraldehydeHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 231422241-[2-(4,4-Dimethylcyclohexyl)phenyl]piperazine

Produkt 1

HCID 231422841-[2-(4,4-Dimethylcyclohexyl)phenyl]-4-furan-3-ylmethylpiperazine

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028
Tetrahydrofuran
Lösungsmittel
HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a mixture of 1-[2-(4,4-dimethylcyclohexyl)phenyl]piperazine (30 mg, 0.11 mmol) produced in Example (3c), furan-3-carbaldehyde (21 mg, 0.22 mmol) and tetrahydrofuran (2 mL) was added sodium triacetoxyborohydride (119 mg, 0.559 mmol), followed by stirring for 1 hour and 50 minutes at room temperature. Saturated aqueous solution of sodium hydrogencarbonate was added to the reaction mixture and extraction was performed with ethyl acetate. The separated organic layer was filtered through Celite. The solvent was distilled off by nitrogen stream to the filtrate. The resultant residue was purified by NH silica gel column chromatography (ethyl acetate/heptane) to give 1-[2-(4,4-dimethylcyclohexyl)phenyl]-4-furan-3-ylmethylpiperazine. This compound was dissolved in dichloromethane, and a 4N solution of hydrogen chloride in ethyl acetate was added. The solvent was distilled off by nitrogen stream. Hexane was added to the obtained residue to produce a solid, which was then triturated by sonication. The supernatant hexane solution was removed and the resulting solid was dried to give 31 mg of the title compound as colorless crystals.

Aufarbeitung

  1. filtrationThe separated organic layer was filtered through Celite
  2. distillationThe solvent was distilled off by nitrogen stream to the filtrate
  3. customThe resultant residue was purified by NH silica gel column chromatography (ethyl acetate/heptane)

Quellen und Nachweise

ORD-Eintrag
ord-9dc8024bc6264e649bc884a87690bdaa
Quelldatensatz
uspto-grants-2008_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07425554B2

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