Potassium Carbonate → 1-Methyl-2-(3-methyl-4-methylthiophenyloxymethyl)-5-nitro-imidazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 15.4 g (0.1 mol) of 3-methyl-4-methylmercaptophenol in 30 ml of dimethylformamide, 13.8 g (0.1 mol) of potassium carbonate powder are added, and then a solution of 17.6 g (0.1 mol) of 1-methyl-2-chloromethyl-5-nitro-imidazole in 40 ml of dimethylformamide is added dropwise while stirring at 25° C. The temperature of the faintly exothermal reaction is adjusted to at most 35° C. by cooling with ice water. The mixture is then stirred for another hour at 25° C., poured onto ice/water, the precipitate is suction-filtered, washed with water and recrystallized from methanol with an addition of charcoal to yield 21.7 g (74% of the theoretical yield) of 1-methyl-2-(3-methyl-4-methylthiophenyl-oxymethyl)-5-nitro-imidazole in the form of yellow crystals, m.p. 108° C.

Herkunft & Nachweise