| Abstract
| - Nitration of some 2-substituted pyrimidine-4,6-diones in sulfuric acid was studied, which affordedpreviously unknown 5,5-gem-dinitropyrimidine-4,6-diones in high yields. The gem-dinitro productswere easily attacked by nucleophiles with concomitant formation of gem-dinitroacetyl derivatives,which in turn could be further hydrolyzed to salts of dinitromethane and triureas.
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