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Urea derivatives Urea derivatives P 0490Chemistry of Urea Nitro Derivatives. Part 3. Reactions of N,N'-Dinitrourea with Bases. -Salt formation and complexation of title dinitrourea (I) with several monoand divalent metal ions is studied. Additionally, reaction with amines, ammonia, hydrazine and hydroxylamine proceeds with substitution of one nitro group to afford the corresponding N-nitro-N'-alkyl(amino, hydroxy)urea derivatives (III), (IV) or (V), resp., in moderate to good yields. N-Nitrocarbamates like (VII) are formed under mild conditions on dissolution of dinitrourea in alcohols. -(IL'YASOV, S. G.; LOBANOVA, A. A.; POPOV, N. I.; SATAEV, R. R.; Russ.

Convenient procedures for the preparation of nitramide from urea or urea derivatives are developed and new reactions of nitramide with formaldehyde, acetic anhydride as well as reactions where nitramide acts as nitrating agent are described. -(LOBANOVA, A. A.; IL'YASOV, S. G.; POPOV, N. I.; SATAEV, R. R.; Russ.

No abstract

Formaldehyde. -Reaction of dinitrourea (I) with formaldehyde affords hydroxymethyl derivatives of N-nitroamines or products of their further transformation depending on the educt ratio and the reaction conditions. -(IL'YASOV, S. G.; LOBANOVA, A. A.; POPOV, N. I.; SATAEV, R. R.; Russ.