Reaktion #565376

Reaktionsgleichung

N-methylpiperidone

THF

1-bromonaphthalene

n-butyllithium

THF

ammonium chloride

→

title compound

Ausbeute 63.0%

4-Hydroxy-1-methyl-4-(1-Naphthyl)piperidine

Ausbeute 63.0%

Lösungsmittel

hexane

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGAfter stirring the reaction mixture for 2 hours
2. 2
   Extraktionthe mixture was extracted with chloroform
3. 3
   TrocknenAfter drying over anhydrous sodium sulfate
4. 4
   Einengenthe chloroform layer was concentrated
5. 5
   Sonstigethe resulting crude crystals were recrystallized from chloroform/hexane

Vorschrift

To a solution of 1-bromonaphthalene (2.7 g, 13 mmol) in THF (40 mL) was added dropwise a 1.63 M solution of n-butyllithium (7.3 mL, 12 mmol) in hexane at −78° C. over 10 minutes. The reaction mixture was then stirred for 30 minutes and a solution of N-methylpiperidone (1.1 g, 10 mmol) in THF (2 mL) was added dropwise to the reaction mixture. After stirring the reaction mixture for 2 hours, a saturated aqueous ammonium chloride(10 mL) was added to the reaction mixture, and the mixture was extracted with chloroform. After drying over anhydrous sodium sulfate, the chloroform layer was concentrated, and the resulting crude crystals were recrystallized from chloroform/hexane to afford the title compound (1.5 g, yield: 63%) as white crystals.

Quelle