Hoechst Aktiengesellschaft

Hoechst Schering Agrevo Gmbh

Peter L Ummen

Werner Knauf

Manfred Kern

Burkhard Sachse

Werner Bonin

Anna Waltersdorfer

Wolfgang Schaper

Peter Braun

Rainer Preuss

Harald Jakobi

Gerhard Salbeck, Deceased

Martin M Arkl

Substituted pyridines and pyrimidines, processes for their preparation and their use as pesticides and fungicides. The invention relates to compounds of the formula ##STR1## in which A is N or CH, R is H, halogen, alkyl or cycloalkyl, R.sup.2 and R.sup.3 are H, halogen or an aliphatic radical or together form a ring, X is O, NH Or S(O).sub.q where q=0, 1 or 2, R.sup.4.sub.q is 0-4 radicals selected from the series consisting of halogen, optionally substituted alkyl or alkoxy, cycloalkyl and optionally substituted phenyl, n=0-2, m=1-3 and Y is optionally substituted methylene or imino. The invention furthermore relates to a process for their preparation and for their use as pesticides, in particular as insecticides, acaricides and fungicides. The compounds are furthermore suitable for controlling nematodes, helminths and molluscs, and for controlling endoparasites and ectoparasites in the field of veterinary medicine.

Substituted pyridines and pyrimidines, processes for their preparation

The invention relates to compounds of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and Q are as defined in the description, X is NH or oxygen and E is a bond or a 1- to 4-membered carbon chain, to a process for their preparation, to agents containing them, and to their use in the control of pests and as fungicides.

Substituted pyrimidines, process for their preparation, and their use as

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Niedernhausen, Germany

Peter L Ummen