Methyl iodide → HCID 21265564, compound

Participants

Reaction Steps

A crude product (16.67 g) of 3-(5-allyloxy-4-bromo-2-fluorophenyl)-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedione, methyl iodide (7.18 g) and potassium carbonate (7.03 g) were suspended in DMF (80 ml), and the mixture was stirred at room temperature for 8 hours. After the reaction, DMF was distilled off under reduced pressure, extracted with ethyl acetate, washed with water, and dried over anhydrous magnesium sulfate. Then, ethyl acetate was distilled off, and the resulting oily substance was purified by chromatography on silica gel (ethyl acetate:n-hexane=1:3 v/v), and the resulting oily substance was crystallized from ethyl acetate-n-hexane to obtain the objective 3-(5-allyloxy-4-bromo-2-fluorophenyl)-1-methyl-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedione (5.42 g).

Provenance & Evidence