Dimethyl Sulfoxide → (1-benzyl-1H-imidazol-2-yl)acetonitrile

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Dry, powdered sodium cyanide (14 gm, 280 mmole) was added to 80 ml of dry dimethylsulfoxide with stirring at 23° C. Then 1-benzyl-2-chloromethylimidazole hydrochloride (14 gm, 63 mmole) was added portionwise over 10 minutes while maintaining the temperature below 40° C. After the addition was complete, the mixture was stirred at 40° C. for an additional hour. It was diluted with 250 ml methylene chloride and the resulting solution was washed with 4×200 ml of water, dried over MgSO4 and the solvent removed in vacuo. The residue was collected by filtration, dissolved in warm methanol and precipitated with ether to obtain needle-like crystals (8.7 g) of N-benzyl-2-cyanomethylimidazole. m.p. 102.5°-104° C.

Herkunft & Nachweise