Reaktion #40739

Reaktionsgleichung

sodium hydride

2-naphthalen-1-yl-1H-imidazole

iodoethane

→

title compound

1-ethyl-2-naphthalen-1-yl-1H-imidazole

Lösungsmittel

DMF

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled to 0° C.
2. 2
   workup.STIRRINGThe mixture is stirred at rt for 1 hr
3. 3
   Temperaturheated to 50° C.
4. 4
   workup.STIRRINGstirred for an additional 8 hr
5. 5
   TemperaturThe reaction mixture is cooled to rt
6. 6
   ExtraktionThe mixture is extracted with EtOAc (100 ml×3)
7. 7
   WaschenThe combined organic layers are washed with water and brine
8. 8
   Trocknendried over anhydrous sodium sulfate, and solvent
9. 9
   Sonstigeis evaporated at reduced pressure
10. 10
    SonstigeThe crude product is purified by flash chromatography on silica gel

Vorschrift

To a suspension of sodium hydride (2.40 g, 60% mineral oil suspension, 60 mmol) in anhydrous DMF (30 ml) is added a solution of 2-naphthalen-1-yl-1H-imidazole (9.70 g, 50 mmol) in DMF (70 ml) at rt. The resulting mixture is stirred at 50° C. for 1 hr, and then cooled to 0° C., after which iodoethane (8.19 g, 52.5 mmol, 1.05 eq.) is added dropwise. The mixture is stirred at rt for 1 hr, and then heated to 50° C. and stirred for an additional 8 hr. The reaction mixture is cooled to rt, and poured into ice-water (500 ml). The mixture is extracted with EtOAc (100 ml×3). The combined organic layers are washed with water and brine, dried over anhydrous sodium sulfate, and solvent is evaporated at reduced pressure. The crude product is purified by flash chromatography on silica gel to give the title compound. LCMS 223 (M+1).

Quelle