5-Fluorouracil → 1-Benzoyl-5-fluoropyrimidine-2,4(1H,3H)-dione

Participants

Reaction Steps

2.6 g (0.02 mole) of 5-fluorouracil was suspended in a mixed solution of 35 ml. of dioxane and 10 ml. of pyridine and reacted with 6.7 g (0.048 mole) of benzoylchloride. The reaction mixture was treated in the same manner as in Example 1 and 2.00 g (42.5% yield) of 1-benzoyl-5-fluorouracil was obtained. The product was recrystallized from ethanol to give white needles melting at 170°-172°C. The results of an elementary analysis thereof were well in agreement with the calculated value as follows:

Provenance & Evidence