Abstract The nitration of 2-substituted 4, 6-dihydroxypyrimidines in concentrated sulfuric acid yields the corresponding 5, 5-dinitro derivatives. When the substituent in position 2 is an alkyl group, the nitration occurs both at position 5 and at the α-carbon atom of the side chain. Hydrolysis of 2-substituted 4, 6-dihydroxy-5, 5-dinitropyrimidines leads to formation of 1, 1- diamino-2-R-2-nitroethylene derivatives. 1, 1-Diamino-2, 2-dinitro-ethylene was obtained ...
