Synthesis, Structure, and Properties ofN,N′‐Dinitrourea

Abstract

backs of various approaches for the synthesis of the target products are discussed. The reactivity of N,N'-dinitrourea and its salts in the reactions of nucleophilic substitution and condensation is discussed.

New Reaction Products of Acetylacetone with Semicarbazide Derivatives

“…The starting 4-nitrosemicarbazide ( 1 ) was prepared by the reported procedure . Semicarbazide ( 6 ) was prepared from semicarbazide hydrochloride by the treatment with an equimolar quantity of KOH in an alcoholic solution at not above 30 °C.…”

“…The known analogues, semicarbazide and 4-aminosemicarbazide (1,3-diaminourea and diaminourea), when reacted with glyoxal do not furnish anthracene derivatives under such conditions. 4-Nitrosemicarbazide ( 1 ) has been synthesized more recently starting from N , N ′-dinitrourea and is a new reactant in organic chemistry and coordination compounds chemistry . Despite a few binding sites, the molecule of 4-nitrosemicarbazide exhibits regioselectivity toward monoaldehydes to yield the respective nitrosemicarbazones. , 4-Nitrosemicarbazide reacts with glyoxal (dialdehyde) and diacetyl (diacetone) to yield the respective linear glyoxal bis (nitrosemicarbazone) and diacetyl bis (nitrosemicarbazone) .…”

A New Synthetic Route to Heteroanthracenes

“…[1] The high reactivity of 1 characterizes it as a polydentate reagent for organic and inorganic synthesis. [1] The high reactivity of 1 characterizes it as a polydentate reagent for organic and inorganic synthesis.…”

A New Method of Preparing Copper Oxide from Dinitrourea Copper Salt

“…The synthesis and study of the structure and reactivity of N, N ′‐dinitrourea (DNU) is a relatively new research area in chemistry and technology of high‐energy compounds of the class of nitramides and nitramines 1. The high reactivity of DNU is concurrently its virtue and drawback.…”

“…For instance, conditions that exclude nucleophilic attack allow the construction of reaction products with preserved DNU moiety. And vice versa, polar media strongly influence the chemical activity of the DNU structure and favorably contribute to various reactions, which bring about a very broad spectrum of useful products 1…”