Hoechst Aktiengesellschaft

Bayer Aktiengesellschaft

Basf Aktiengesellschaft

Boehringer Mannheim Gmbh

Rudolf Gompper

Ingeborg Hammann

Bernhard Homeyer

Wolfgang Behrenz

Herbert Naarmann

Donald Lupo

Manfred Kubbies

Axel Schmidt

Thomas Mueller

Heinz Kolbl

Gunther Hermann

Harald Engel

Bernhard Virnekas

Hans-Jurgen Mair

Stefan Brandl

The use of conjugated compounds which contain two or more pyrimidine rings as part of the conjugated system as electroluminescence materials. The conjugated compounds containing pyrimidine rings have a high thermal stability and a high photostability. They are partially soluble in acids, which also makes possible processing from solution, as well as by vapor deposition.

Use of conjugated compounds containing pyrimidine groups as

Diazapentalene derivatives as a specific reagent for thiol compounds

Polyanils

Aromatic, substituted pyrimidine compounds, methods for the preparation thereof, and use thereof Compounds having a pyrimidine ring, of the formula (I) ##STR1## are suitable for nonlinear-optical applications, e.g. for fabricating components for frequency-doubling of light. In the formula, AX is ##STR2## An.sup.- is an anion, B is the pyrimidine(1,4) radical, D is --NH.sub.2, --NH--NH.sub.2, --OR.sup.6, --O(CH.sub.2).sub.p OH, --OH, --NR.sup.5 R.sup.6, --NHR.sup.6, --N.dbd.CH--R.sup.4, --HN--N.dbd.CH--R.sup.4, --NO.sub.2, the radicals R.sup.1, R.sup.2, R.sup.3 and R.sup.5 are an alkyl radical having from 1 to 22 carbon atoms or a radical CF.sub.3 (CF.sub.2).sub.m (CH.sub.2).sub.n, R.sup.4 is a phenyl radical which may be substituted, R.sup.6 is an alkyl radical having from 1 to 22 carbon atoms or the radical CF.sub.3 (CF.sub.2).sub.m (CH.sub.2).sub.n, where m is an integer of at least 5, n is an integer of at least zero, and (n+m) is at most 22, or the group (CH.sub.2).sub.p OH, where p is an integer from 2 to 5.

Aromatic, substituted pyrimidine compounds, methods for the preparation

Combating pests with compounds of the formula ##STR1## in which the radicals can have many specifically recited definitions. Many of the compounds are novel, particularly those where R' is --CN and R.sup.2 is --CN or --CONH.sub.2.

Bicyclic pesticidal agents

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Munich, Germany

Rudolf Gompper