1-Polyfluoroalkoxyphenyl-4-substituted-5-halopyridazones-6 and herbicidal uses thereof
AssigneeBASF SE
InventorsAdolf Fischer, deceased, Hanspeter Hansen, Wolfgang Rohr
Life of this patent
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Abstract
1-Polyfluoroalkoxyphenyl-4-substituted-5-halopyridazones-6 in which the 4-substituent is amino, monoalkylamino, dialkylamino (1 to 3 carbon atoms per alkyl) or lower alkoxy, chloroacetamido, CH.sub.3 COOCH.sub.2 --CO--NH-- or trimethylenimino and herbicidal uses thereof to control growth of unwanted plants among crop plants, especially cotton.
Claims5
A substituted pyridazone selected from the group consisting of
- 1-(m-tetrafluoroethoxyphenyl)-4-amino-5-chloropyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-amino-5-bromopyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methylamino-5-chloropyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methylamino-5-bromopyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-dimethylamino-5-chloropyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-dimethylamino-5-bromopyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methoxy-5-chloropyridazone-6 and
- 1-(m-tetrafluoroethoxyphenyl)-4-methoxy-5-bromopyridazone-6.
A substituted pyridazone of the formula ##STR93## wherein Hal is bromo or chloro, R.sup.1 is difluoromethyl and R is methoxy, dimethylamino or methylamino.
A process for controlling the growth of unwanted plants among cotton plants wherein the locus of the plants is treated with a phytotoxic amount of a substituted pyridazone selected from the group consisting of
- 1-(m-tetrafluoroethoxyphenyl)-4-amino-5-chloropyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-amino-5-bromopyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methylamino-5-chloropyridaone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methylamino-5-bromopyridaone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-dimethylamino-5-chloropyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-dimethylamino-5-bromopyridazone-6,
- 1-(m-tetrafluoroethoxyphenyl)-4-methoxy-5-chloropyridazone-6 and
- 1-(m-tetrafluoroethoxyphenyl)-4-methoxy-5-bromopyridazone-6.
Dependencies are inferred from the claim text.