| abstract |
Novel substituted 1,2,4-triazinediones of the general formula I n<IMAGE>n in whichn R<1> represents heteroaromatic radicals bonded via carbon and which are optionally substituted,n X represents O, S, SO or SO2, R<2> represents one or more, identical or different radicals of the group comprising hydrogen, halogen, nitro, alkyl, alkoxy, haloalkyl and haloalkoxy andn R<3> represents hydrogen, optionally substituted alkyl, alkenyl, alkynyl or aralkyl,n process for their synthesis and intermediates therefor. The compounds of the formula I are used for combating parasitic protozoa. |