Benzoic Acid → 3,9-Dihydro-8-phenyl-1,3-dipropyl-1H-purine-2,6-dione

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Reaction Steps

1,3-dipropyl-5,6-diaminouracil (0.01 mol) was dissolved in 30 ml methanol, followed by 0.01 mol of benzoic acid and then 0.01 mol of DICD. The solution was stirred for 30 min at room temperature, filtered, and washed with a small amount of methanol. The solid was boiled for ten minutes in 2.5N KOH, filtered hot, and the liquid neutralized with concentrated HCl. The solid was collected by filtration, washed with water, redissolved in 100 ml with a minimum amount of KOH, precipitated by neutralization with HCL, filtered, washed with water, and dried. The product was identified by chemical ionization mass spectrometry and elemental analysis. Yield 77%.

Provenance & Evidence