Radiolysis of Pyrimidines in Aqueous Solutions: Part 2.—Product Formation in the Interaction of ea~, -H, -OH and C17- with

Abstract

Product yields in the reaction of e~, -H, -OH and Cl/ with uracil and uracil- have been determined quantitatively in 60Co y-irradiated aqueous uracil solutions in the presence of suitable scavengers. Good material balances between G(—uracil) and G(total products) have been obtained in all cases. The products determined were: uracil dimer, alloxan, alloxantin, uracil czj-glycol, uracil /ra/u-glycol, dialuric acid, isobarbituric acid, 5-hydroxydihydrouraciI, 6-hydroxydihydrouraciI, dihydrouracil, formylurea, 5-hydroxyhydantoin, parabanic acid, urea and alcohol adducts. Based on the yields of these products and the available literature, mechanisms are proposed and discussed.