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US 4,289,903 AGranted
Para-phenylalkoxy phenylurea and thiourea compounds and herbicidal use thereof
AssigneeAmerican Cyanamid Company
InventorsDavid M. Spatz, Barrington Cross
Life of this patent
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Abstract
There are provided certain p-phenylalkoxy phenylurea and thiourea compounds useful for the control of undesirable plants in the presence of agronomic crops and to methods for the preparation of said phenylalkoxy phenylurea and thiourea compounds.
Claims18
A compound of the formula:
- ##STR60## wherein X is selected from the group consisting of O,S, and SO.sub.2 ;
- Q is O;
- R.sub.1 is H or CHO;
- R.sub.2 is H or C.sub.1 -C.sub.4 alkyl;
- W is selected from the group consisting of H, halogen, C.sub.1 -C.sub.4 alkyl, CF.sub.3, OCH.sub.3, and NO.sub.2 ;
- R.sub.3 is selected from the group consisting of H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkyl monosubstituted with either C.sub.1 -C.sub.3 alkoxy or halogen, C.sub.3 -C.sub.5 alkenyl, C.sub.3 -C.sub.5 alkynyl and CHO;
- A represents C.sub.2 -C.sub.3 alkyl;
- Y is selected from the group consisting of H, halogen, C.sub.1 -C.sub.4 alkyl, OCH.sub.3 and CF.sub.3 ;
- Z represents H, halogen, C.sub.1 -C.sub.4 alkyl, or C.sub.1 -C.sub.4 alkoxy.
6 more elements
A compound of the formula:
- ##STR61## wherein X is O;
- Q is S;
- R.sub.1 is H;
- R.sub.2 is H or C.sub.1 -C.sub.4 alkyl;
- R.sub.3 is C.sub.1 -C.sub.4 alkyl;
- A is C.sub.2 -C.sub.3 alkyl;
- Y or Z is H or halogen;
- and W is H or halogen.
5 more elements
The compound according to claim 1, 3-[3-chloro-4-(phenethyloxy)-phenyl]-1,1-diethylurea.
Dependencies are inferred from the claim text.