Agricultural fungicidal compositions containing 6-(substituted phenyl)-pyridazinones and said pyridazinones
AssigneeSankyo Company, Limited
InventorsTeruomi Jojima, Yukiyoshi Takahi
Life of this patent
Estimating the term…
Abstract
Agricultural fungicidal compositions containing as an active ingredient one or more of 6-(substitutedphenyl)-3(2H)-pyridazinone compounds, salts thereof and 6-(substituted-phenyl)-4,5-dihydro-3(2H)-pyridazinone compounds, as well as new pyridazinone compounds having fungicidal activities.
Claims24
An agricultural fungicidal composition which comprises as an active ingredient a compound having the formula ##STR37## wherein R.sub.1 is hydrogen atom, hydroxy group, a group of the formula -O-CO-R.sub.5 in which R.sub.5 is an alkyl group of 1 - 5 carbon atoms or a group of the formula -O-SO.sub.2 -R.sub.6 in which R.sub.6 is a phenyl group optionally substituted with a halogen atom or an alkyl group of 1 - 3 carbon atoms;
- R.sub.2 and R.sub.4 may be the same or different and each represents halogen atom or one of R.sub.2 and R.sub.4 is a halogen atom and the other is hydrogen atom;
- R.sub.3 is hydrogen atom, an alkyl group of 1 - 6 carbon atoms, an alkoxy group of 1 - 6 carbon atoms, an alkenyloxy group of 3 - 5 carbon atoms, an alkynyloxy group of 3 - 4 carbon atoms, amino group, hydroxy group, a halogen atom, a group of the formula -O-CO-R.sub.5 in which R.sub.5 is as defined above or a group of the formula -O-SO.sub.2 -R.sub.6 in which R.sub.6 is as defined above;
- and
- A is a group -CH.sub.2 -CH.sub.2 - or -CH.dbd.CH- or a salt thereof where A is the group -CH.dbd.CH-
- and an agriculturally acceptable carrier.
A method for combatting pathogenic fungi in plants, seeds and soils which comprises applying to said subjects a fungicidal amount of a compound having the formula ##STR38## wherein R.sub.1 is hydrogen atom, hydroxy group, a group of the formula -O-CO-R.sub.5 in which R.sub.5 is an alkyl group of 1 - 5 carbon atoms or a group of the formula -O-SO.sub.2 -R.sub.6 in which R.sub.6 is a phenyl group optionally substituted with halogen or an alkyl group of 1 - 3 carbon atoms;
- R.sub.2 and R.sub.4 may be the same or different and each represents a halogen atom or one of R.sub.2 and R.sub.4 is a halogen atom and the other is hydrogen atom;
- R.sub.3 is hydrogen atom, an alkyl group of 1 - 6 carbon atoms, an alkoxy group of 1 - 6 carbon atoms, an alkenyloxy group of 3 - 5 carbon atoms, an alkynyloxy group of 3 - 4 carbon atoms, amino group, hydroxy group, a halogen atom, a group of the formula -O-CO-R.sub.5 in which R.sub.5 is as defined above or a group of the formula -O-SO.sub.2 -R.sub.6 in which R.sub.6 is as defined above;
- and
- A is a group -CH.sub.2 -CH.sub.2 - or -CH.dbd.CH- or a salt thereof where A is the group -CH.dbd.CH-.
6-(3,5-Dibromo-4-aminophenyl)-3(2H)pyridazinone.
6-(3,5-Dichloro-4-methylphenyl)-3(2H)pyridazinone methylisocyanate.
6-(3-Bromo-4-methylphenyl)-3(2H)pyridazinone.
6-(3-Chloro-4-isopropylphenyl)-3(2H)pyridazinone.
6-(3,5-Dichloro-4-methylphenyl)-3(2H)pyridazinone.
6-(3,5-Dibromo-4-methylphenyl)-3(2H)pyridazinone.
6-(3,5-Dichloro-4-ethylphenyl)-3(2H)pyridazinone.
6-(3,5-Dibromo-4-chloro-2-hydroxyphenyl)-3(2H)pyridazinone.
6-(3,5-Dibromo-4-methyl-2-hydroxyphenyl)-3(2H)pyridazinone.
6-(3-Bromo-5-chloro-4-methyl-2-hydroxyphenyl)-3(2H)pyridazinone.
6-(3-Bromo-5-chloro-4-methylphenyl)-3(2H)pyridazinone.
6-(3-Bromophenyl)-3(2H)pyridazinone.
6-(3,5-Dichloro-4-methoxyphenyl)-3(2H)pyridazinone.
Dependencies are inferred from the claim text.