Merck Patent Gesellschaft MIT Beschrankter Haftung

Jaime Piulats

Rochus Jonas

Michael Klockow

Helmut Prucher

Ingeborg Lues

Hans-Jochen Schliep

New benzimidazolylpyridazinones of the formula I ##STR1## in which R.sup.1 is a styryl or mononculear of binuclear heteroaryl radical which contains 1-4 heteroatoms, each of which is unsubstituted or singly or multiply substituted by alkyl, alkoxy, alkylthio, halogen, OH, SH, amino, alkylamino, dialkylamino, acylamino having 1-8 C atoms, nitro, COOH, COOalkyl and/or CN,

Benzimidazolylpyridazinones

New benzimidazolylpyridazinones of the formula I ##STR1## in which R.sup.1 is a styryl or mononuclear of binuclear heteroaryl radial which contains 1-4 heteroatoms, each of which is unsubstituted or singly or multiply substituted by alkyl, alkoxy, alkylthio, halogen, OH, SH, amino, alkylamino, dialkylamino, acylamino having 1-8 C atoms, nitro, COOH, COOalkyl and/or CN,

Thiadiazinones of the formula I ##STR1## wherein A is --CHR.sup.4 --CHR.sup.5 --, --CH.sub.2 --CR.sup.4 R.sup.5 --, --CR.sup.4 R.sup.5 --CH.sub.2 --, --CHR.sup.4 --CHR.sup.5 --CH.sub.2 --, --CHR.sup.4 --CH.sub.2 --CHR.sup.5 --, --CH.sub.2 --CHR.sup.4 --CHR.sup.5 --, --CR.sup.4 R.sup.5 --CH.sub.2 CH.sub.2 --, --CH.sub.2 --CR.sup.4 R.sup.5 --CH.sub.2 -- or --CH.sub.2 CH.sub.2 --CR.sup.4 R.sup.5 --,

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Jaime Piulats