Potassium Carbonate → 5-[4-(4-cyanophenyl)-1-piperazinyl]-6-methyl-2,4-(1H,3H)-pyrimidinedione

Participants

Reaction Conditions

Reaction Steps

A mixture of 20.5 g (0.10 mole) of 5-bromo-6-methyl-2,4(1H,3H)-pyrimidinedione, 18.1 g (0.10 mole) of 4-(4-cyanophenyl)piperazine, 6.4 g (0.11 mole) of anhydrous potassium fluoride, 15.2 g (0.1 mole) of powdered potassium carbonate in 100 ml of hexamethyl phosphoramide was heated at 140° C. for 24 hours. The mixture was cooled and poured into 500 ml of ice water. The solid was collected and washed with 100 ml of water. Recrystallization from N,N-dimethylformamide and drying in vacuo at 78° C. for 16 hours gave 9.3 g of the product as a dull solid.

Provenance & Evidence