| http://www.w3.org/ns/prov#value | - Compounds of formula (II) may be prepared by reacting, in a first stage, ammonia or an amine of formula NH2 R1, R1 having the meaning defined above, with a 2,4,6-trihalogenonitrobenzene of formula (IV) wherein each X, which may be identical or different, is a halogen to obtain compound (V) which is then subjected, in a second stage, to the action of an amine of formula NH2 R2, R2 having the meanin
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