Pyridazine pesticides
AssigneeMay & Baker Limited
InventorsIan Philip Garland, Leslie Roy Hatton, William George Leeds, Edgar William Parnell
Life of this patent
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Abstract
Pyridazine derivatives of the formula: ##STR1## wherein R.sup.1 represents a fluorine, chlorine, bromine or iodine atom or an alkyl, alkoxy, alkylthio, alkylsulphonyl, nitro, trifluoromethyl, cyano, alkoxycarbonyl, carboxy, aminocarbonyl, amino, monoalkylamino or dialkylamino group, R.sup.2 represents a hydrogen atom or an alkyl group, R.sup.3 represents a hydrogen, fluorine, chlorine or bromine atom or an alkyl, methoxy, ethoxy or hydroxy group, or R.sup.2 and R.sup.3 together represent an oxygen atom or a hydroxyimino group, R.sup.4 represents a hydrogen atom or an alkyl group and n represents zero or an integer from 1 to 5 inclusive, are new compounds useful as herbicides.
Claims47
pyridazine of the formula:
- ##STR56## wherein R.sup.1 represents fluorine. chlorine, bromine or iodine, or an alkyl, alkoxy, alkylthio, alkylsulphonyl, nitro, trifluoromethyl, cyano, monoalkylamino or dialkylamino group, the said alkyl group and the alkyl moieties of said alkoxy, alkylthio, alkylsulphonyl, monoalkylamino and dialkylamino groups having from 1 to 6 carbon atoms, R.sup.2 represents hydrogen or an alkyl group of 1 to 6 carbon atoms, R.sup.3 represents hydrogen, fluorine, chlorine or bromine, or an alkyl group of 1 to 6 carbon atoms, or a methoxy, ethoxy or hydroxy group, R.sup.4 represents hydrogen or an alkyl group of 1 to 6 carbon atoms, and n represents zero or an integer from 1 to 3 inclusive, the R.sup.1 radicals being the same or different when n is greater than 1, and agriculturally-acceptable salts thereof.
Dependencies are inferred from the claim text.