Uniroyal Chemical Company, Inc.

Uniroyal Chemical Ltd./ltee

Uniroyal Chemical Limited

Ltee

Alan W Dalrymple

Paul T McDonald

Walter Gerhard Brouwer

Ethel Ellen Felauer

Dong Dao-Cong

Compounds having the structural formula ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 is C.sub.1 -C.sub.4 alkyl or haloalkyl, R.sub.3 and R.sub.4 are hydrogen or halogen, and R.sub.5 is hydrogen or COOR.sub.6 wherein R.sub.6 is C.sub.1 -C.sub.8 linear or branched alkyl, alkenyl, or alkynyl, and compositions comprising the compounds. The compounds and compositions are useful as herbicides, desiccants and defoliants.

3-arylthionouracils useful as herbicides, defoliants, and desiccants

The present invention is directed to a novel class of pyrimidinyl aryl ketone oximes having excellent herbicidal and insecticidal activity. The novel compounds are represented by the structures I, Ia and Ib shown immediately below. Herbicidal activity is particularly directed against 'weed-like' grasses and broadleaf weeds while the insecticidal properties are particularly active against rice planthoppers and aphids. ##STR1##

Pyrimidinyl aryl ketone oximes

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Lindale, TX, United States of America

Alan W Dalrymple