Method for producing 2,3,5,6-tetrahalogen-xylyidene compounds

   
   

The invention relates to a process for preparing 2,3,5,6-tetrahaloxylylidene compounds of formula (I) ##STR1## where each Hal is independently fluorine or chlorine, and X is fluorine, chlorine, bromine, --O--R, or --O--C(.dbd.O)R, where R is hydrogen, a straight-chain or branched C.sub.1 -C.sub.12 -alkyl- or a C.sub.6 -C.sub.14 -aryl radical, by reacting 2,3,5,6-tetrahaloxylylidenediamines of formula (II) ##STR2## with an alkyl nitrite and/or nitrous acid in HX as a solvent.

 
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