( 302 ) 
If this hypothesis is correct a metaphenylene derivative should be 
formed by the action of cliinethylamine, namely 4.6. dinitrodimethyi- 
NO,/\ 
diethylmetaphenylenediamine: | | . 
NO, . 
This substance must then, however, be identical with the reaction 
product of diethylamine on the 1.3.4.6. trinitrodimethylaniline m. p. 
195° which I prepared previously: 
NCCHj'j 
-KC 3 h 5 ) 2 iin -* 
\/*(CAhh 
Dr. Ultee was kind enough to scrutinise these reactions, and 
obtained indeed with both an identical product melting at 83°, and 
which, on analysis, gave the results required for a dinilrodimethyl- 
diqthylphenylenediamine. 
A melting point determination of a mixture of the products obtained 
in both reactions did not show a depression of the melting point. 
As regards the two new dinitro-products we must assign to the 
gSpj I y ^N(C a H 6 ) 3 
one melting at 95° the structure formula: j | . One of the nitro- 
\r 
groups may be readily substituted by the action of ammonia or 
arqines 1 ), which points to the fact that the two nitro-groups are in 
the ortfAoposition in regard to each other. Derivatives of w-phenylene- 
diamine are then formed. 
This dinitroderivative is also forrrfed from m-nitrodietbylaniline 
whereas the formation of the 1-3-4-6-tfinitroderivative m.p. 158° on 
subsequent nitration, agrees entirely with that view. 
On the other hand* the dinitrodiethylaniline m. p. 76° does not 
contain any moveable nitro-group so that, taking into consideration 
that in the nitration with dilute nitric acid one nitro-group occupies 
9 With ammonia a compound melting at 135° is formed, which in sulphuric 
acid solution gives a fine red coloration with traces of nitrous acid. 
The description of this compound and of many others obtained in this research 
will appear in the “Rec.”. 
