Reaktion #46681

Reaktionsgleichung

2-(1adamantyl)-N-pentylethylamine hydrochloride

triethylamine

4-Pyridinepropanol

triethylamine

N,N′-disuccinimidyl carbonate

→

compound

Ausbeute 97.0%

3-(4-pyridyl)propyl N-[2-(1-adamantyl)ethyl]-N-pentylcarbamate

Ausbeute 97.0%

Lösungsmittel

methylene chloride

acetonitrile

Reaktionsbedingungen

Aufarbeitung

1. 1
   EinengenThe reaction mixture was concentrated under reduced pressure, and ethyl acetate (100 ml)
2. 2
   workup.ADDITIONa saturated aqueous sodium hydrogencarbonate solution (50 ml) were added to the residue
3. 3
   SonstigeAfter separation
4. 4
   Waschenthe organic layer was washed with a saturated aqueous sodium chloride solution (50 ml)
5. 5
   Trocknendried over anhydrous sodium sulfate
6. 6
   SonstigeThe solvent was evaporated under reduced pressure
7. 7
   SonstigeThe residue was dried under reduced pressure
8. 8
   workup.DISSOLUTIONdissolved in anhydrous methylene chloride (10 ml)
9. 9
   workup.STIRRINGthe mixture was stirred for 1.5 hours
10. 10
    WaschenThe reaction mixture was washed with a saturated aqueous sodium hydrogencarbonate solution (50 ml)
11. 11
    Trocknena saturated aqueous sodium chloride solution (50 ml) successively and dried over anhydrous sodium sulfate
12. 12
    SonstigeThe solvent was evaporated under reduced pressure
13. 13
    Sonstigethe residue was purified by silica gel column chromatography

Vorschrift

4-Pyridinepropanol (528 mg, 3.85 mmol) was dissolved in acetonitrile (20 ml) at room temperature, and then triethylamine (1.61 ml, 11.6 mmol) was added to the solution. Further, N,N′-disuccinimidyl carbonate (1.48 g, 5.87 mmol) was added to the mixture, and the whole was stirred for 2.5 hours. The reaction mixture was concentrated under reduced pressure, and ethyl acetate (100 ml) and a saturated aqueous sodium hydrogencarbonate solution (50 ml) were added to the residue. After separation, the organic layer was washed with a saturated aqueous sodium chloride solution (50 ml) and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was dried under reduced pressure and dissolved in anhydrous methylene chloride (10 ml). Next, a solution of 2-(1adamantyl)-N-pentylethylamine hydrochloride (Intermediate No. 1-1, 1.32 g, 4.62 mmol) and triethylamine (0.80 ml, 5.7 mmol) in methylene chloride (90 ml) was added thereto, and the mixture was stirred for 1.5 hours. The reaction mixture was washed with a saturated aqueous sodium hydrogencarbonate solution (50 ml) and a saturated aqueous sodium chloride solution (50 ml) successively and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the target compound (1.54 g, 97%) as an oily matter.

Quelle