1 -Chloro-2,4-dinitro benzene, from

N 21.94% pale yellow needles (from HAc), mp 220°, puffs off on strong heating sol in acetone, chlf, ligroin Et acetate. Prepd from 2-nitrophenylhydrazine 4-chloro-1,3-dinitro-benzene... 

Bull(Fr) [33 33, 1175 St 11790905) 2,4-Dinitrodiphenylamine, (02N)2C6H3.NH.C6Hb red ndls (from benz), mp 157° sol in acet, chlf St hot ale can be prepd by interaction of 4-chloro-l,3 dinitro-benzene and aniline or by other methods (Refs 1-4)... 

Trinitro-5 -chlorobenzene, yel crysts(from benz), mp 168° can be prepd by treating 2,6 -dinitro-4-chloro-1-benzene diazonium nitrate with Cu sulfate and Na nitrite in w. Its expl props were not detd... 

Dissolve 1.0g (or 1.0ml) of the amine and l.Og of l-chloro-2,4-dinitro-benzene in 5-10 ml of ethanol, add a slight excess of anhydrous potassium carbonate or of powdered fused sodium acetate, reflux the mixture on a water bath for 20-30 minutes and then pour into water. Wash the precipitated solid with dilute sodium carbonate solution, followed by dilute hydrochloric acid. Recrystallise from ethanol, dilute ethanol or glacial acetic acid. 

DinitTO-l,3-(diamino-N,N,N, N -tetra-methyl)-benzene, yel nds (from chlf + ale), mp 191° sol in chlf si sol in hot ale was prepd by heating l,3-dinitro-4,6-dichlorobenzene with dimethylaniline in ale or from 2,4-dinitro-5-chloro-N,N- iimethylani-line 8c NH(CH3)2 (Ref 2)... 

N,N -D ime thy 1-4,6-dinitro-m-pbenylenedia-mine, (02N)2CeH2(NH.CH3)2 yel ndls (from acet), mp >290° (dec) obtd with other products by warming 5-chloro-l,2,4-trinitro-benzene or 5 bromo- deriv with ca 4 moles of benzaldehyde-methylimide in MeOH (Refs 4 7)... 

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