Reaktion #87150

Reaktionsgleichung

5-Bromopyridin-2(1H)-one

sodium hydride

iodomethane

→

5-bromo-1-methylpyridin-2(1H)-one

Ausbeute 79.0%

Lösungsmittel

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturto warm to ambient temperature
2. 2
   workup.STIRRINGstirred overnight
3. 3
   SonstigeThe reaction was quenched with water (2 mL)
4. 4
   Einengenconcentrated
5. 5
   Extraktionthe resulting mixture was extracted with EtOAc (50 mL×3)
6. 6
   Trocknendried over anhydrous sodium sulfate
7. 7
   Einengenconcentrated
8. 8
   WaschenThe residue was washed with petroleum ether (30 mL)
9. 9
   Sonstigedried

Vorschrift

5-Bromopyridin-2(1H)-one (2.00 g, 11.5 mmol) was added in portions to a mixture of sodium hydride (1.10 g, 27.5 mmol) in THF (100 mL) at 0° C. The mixture was stirred for 1 h at 0° C. followed by addition of iodomethane (8.20 g, 57.5 mmol). The reaction mixture was allowed to warm to ambient temperature and stirred overnight. The reaction was quenched with water (2 mL) and then concentrated. The residue was suspended in water (50 mL) and the resulting mixture was extracted with EtOAc (50 mL×3). The organic extracts were combined, dried over anhydrous sodium sulfate, and concentrated. The residue was washed with petroleum ether (30 mL) and dried to afford 5-bromo-1-methylpyridin-2(1H)-one (1.7 g, 79% yield) as a yellow solid.

Quelle