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US 4,541,963 AGranted
4-Trifluoromethylphenylhydrazinomethylene-malononitriles
AssigneeMay & Baker Limited
InventorsLeslie R. Hatton, Edgar W. Parnell, David A. Roberts
Life of this patent
Estimating the term…
Abstract
New N-phenylpyrazole derivatives of the formula: ##STR1## (wherein R.sup.12 represents a chlorine atom, R.sup.13 represents a hydrogen, fluorine or chlorine atom, R.sup.14 represents a hydrogen or fluorine atom and R.sup.15 represents a hydrogen, fluorine or chlorine atom, with the proviso that when R.sup.14 represents a fluorine atom, R.sup.15 represents a fluorine or chlorine atom, or R.sup.12, R.sup.13 and R.sup.15 each represents a fluorine atom and R.sup.14 represents a hydrogen or fluorine atom) possess useful herbicidal properties.
Claims1
Compounds of the general formula:
- ##STR9## wherein R.sup.12 represents a chlorine atom, R.sup.13 represents a hydrogen, fluorine or chlorine atom, R.sup.14 represents a hydrogen or fluorine atom and R.sup.15 represents a hydrogen, fluorine or chlorine atom, with the proviso that when R.sup.14 represents a fluorine atom, R.sup.15 represents a fluorine or chlorine atom, or R.sup.12, R.sup.13 and R.sup.15 each represent a fluorine atom and R.sup.14 represents a hydrogen or fluorine atom.
Dependencies are inferred from the claim text.