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US 4,057,415 AGranted
Nitroisothiazolylureas as herbicides
AssigneeFMC Corporation
InventorArthur Albert Ramsey
Life of this patent
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Abstract
A new class of herbicidal compounds consisting of 1-alkyl- and 1,1-dialkyl-3-(3-substituted-4-nitro-5-iso-thiazolyl)ureas in which the 3-substituent consists of alkyl, alkoxy, alkylamino, alkylthio, alkylsulfinyl, and alkylsulfonyl exhibits preemergence and postemergence herbicidal activity, controlling effectively the growth of a wide spectrum of grassy and broad-leaved plant species. The synthesis of a representative member of this class is described in detail, and its utility is exemplified.
Claims4
A substituted isothiazolylurea of the formula:
- ##STR3## in which R.sub.1 is straight or branched alkyl of 1 to 4 carbons;
- R.sub.2 is alkyl of 1 to 4 carbons;
- R.sub.3 is hydrogen or alkyl of 1 to 4 carbons.
Dependencies are inferred from the claim text.