Dinitro compounds azoxy

Cyclic azoxy compounds from dinitro compounds... 

Cyclic azoxy compounds from dinitro compounds by controlled reduction Amines from nitro compounds... 

Nonselective attacks at the carbon combined with a nitro group and carbon combined with the N(O) atom of the azoxy group were observed in the reaction of 4,4 -dinitroazoxyfurazan with bases and nucleophiles [468], The preparation of dinitro polyfurazans shows the great synthetic potential of the construction sequence. The simplicity and availability of the starting substances (compounds) makes this strategy a powerful method for high energetic material construction. 

Condensation ofNitro Compounds. The stflbene dyes derived from condensation of 4-nitrotoluene-2-sulfonic acid [121-03-9] (para acid) in aqueous caustic solution either alone or with aryl amines, are mixtures of dyes containing azo and azoxy groups with indefinite structures. The primary products are 4,4,-dinitro-2>2,-stilbenedisulfonic acid [128 42-7] and 4,4,dinitrodibenzyl-2>2,-disulfonic acid [6404-60-0] which condense further to form the dye. The properties of the stilbene dyes vary with the amounts and concentrations of the reactants and with the time and temperature of heating. The hue... 

Complete reduction of TNT and its partially reduced derivatives can also be accomplished when these compounds are present in soil under strict anaerobic conditions (Fig. 14). Notably, after 4 days TNT and partially reduced nitrotoluenes have completely disappeared from the aqueous phase, whereas considerable amounts of these contaminants (approx. 180 mg TNT and 40 mg ADNT per kg ) are still present in soil. Obviously, at these lower levels of contamination the process of desorption becomes slower than the reduction reaction. The reduction of these compounds in heaps or compost piles, where aerobic or semiaerobic conditions prevail, remains incomplete. Products of partial reduction such as mononitro-diamino- and dinitro-monoamino-toluenes and azoxy compounds are extractable from soil. In contrast to the observations made in the absence of soil (Fig. 13), TAT as a product of complete reduction of TNT is irreversibly bound to the soil matrix and thus remains undetectable in the aqueous phase (23). Interestingly, this irreversible binding does not require the participation of O2. Therefore, primary adsorption of TAT corresponds to the well-known mechanism of intercalation of diamines into clay minerals such as montmorillonite (18,48). 

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