Polynitro special

This method cannot be applied to polynitro amines, since these are so weakly basic that they can be diazotised only under special conditions in strongly acidic solutions. In such cases use may, however, be made of the mobility oonfared upon halogen atoms by the presence of nitro groups in the orlko and para positions. Thus the valuable reagent 2 4-dinitrophenylhydrazine is readily prepared by the condensation of 2 4-dinitrochlorobenzene with hydrazine ... 

N-macrocyclics nitro compounds, N-heterocyclic oxo-N-heterocyclics polynitro-N-heterocyclics Reissert compounds (s. a. under Heterocyclics, special)... 

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