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US 3,941,881 AGranted
Novel 3 or 5-aminopyrazolium salts and fungicidal use thereof
AssigneeAmerican Cyanamid Company
InventorsBarrington Cross, Bryant Leonidas Walworth
Life of this patent
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Abstract
There are provided certain novel 1,2-dimethyl pyrazolium compounds having nitrogen containing substituents in the 3 or 5 position, and to both a method for controlling plant pathogenic fungi with said compounds and a method for protecting plants from an attack by fungi by applying to the foliage of plants a fungicidally effective amount of said compound.
Claims6
A method for the control of plant pathogenic fungi which comprises the step of:
- contacting said pathogenic fungi with a fungicidally effective amount of a compound having the formula:
- ##SPC5##
- where R is 4-pyridyl or a member represented by the formula:
- --NR.sub.1 R.sub.2
- and wherein R.sub.1 and R.sub.2 are each a member selected from the group consisting of hydrogen, alkyl C.sub.1 -C.sub.6, cycloalkyl C.sub.3 -C.sub.6, benzyl, phenyl, 2,3-xylyl or radical:
- ##SPC6##
- where R.sub.3 is hydrogen or methyl;
- X is an anion having a charge of from 1 to 3 and is selected from the group consisting of chloride, bromide, iodide, acetate, sulfate, hydrogen sulfate, methyl sulfate, benzene sulfonate, p-toluene sulfonate, nitrate, phosphate, carbonate and perchlorate, tetrafluoroborate;
- and m is an integer selected from 1 to 3.
6 more elements
Dependencies are inferred from the claim text.