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US 4,789,393 AGranted
Herbicidal pyridine sulfonamides
AssigneeE. I. Du Pont de Nemours and Company
InventorMary A. Hanagan
Life of this patent
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Abstract
N,N-dimethyl-2-(aminosulfonyl)-3-pyridine carboxamides are useful as agricultural chemicals. In particular, the compounds are useful as herbicides which show significant herbicidal activity on grasses and yet have the unexpected property of being safe to corn.
Claims36
A compound of the formula:
- ##STR22## wherein ##STR23## R is H or CH.sub.3 ;
- R.sub.1 is H or C.sub.1 -C.sub.3 alkyl;
- R.sub.2 is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.2 alkoxy;
- R.sub.3 is H, Cl, F, Br, CH.sub.3, CF.sub.3, OCH.sub.3 or OCF.sub.2 H;
- and
- X is CH.sub.3, CH.sub.2 F, CH.sub.2 CH.sub.3, OCH.sub.3, OCH.sub.2 CH.sub.3, Cl, or CH.sub.2 OCH.sub.3.
3 more elements
Dependencies are inferred from the claim text.