Fungicide mixtures based on pyridine carboxamides

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C514S336000, C514S345000, C514S355000, C514S376000, C514S391000, C514S421000

Reexamination Certificate

active

06365608

ABSTRACT:

The present invention relates to fungicidal mixtures for controlling harmful fungi, which mixtures comprise amide compounds of the formula I
A—CO—NR
1
R
2
  (I)
in which
A is an aryl group or an aromatic or non-aromatic, 5- or 6-membered heterocycle which has from 1 to 3 hetero atoms selected from O, N and S;
where the aryl group or the heterocycle may or may not have 1, 2 or 3 substituents which are selected, independently of one another, from alkyl, halogen, CHF
2
, CF
3
, alkoxy, haloalkoxy, alkylthio, alkylsulfynyl and alkylsulfonyl;
R
1
is a hydrogen atom;
R
2
is a phenyl or cycloalkyl group which may or may not have 1, 2 or 3 substituents which are selected from alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkyloxy, cycloalkenyloxy, phenyl and halogen, where the aliphatic and cycloaliphatic radicals may be partially or fully halogenated and/or the cycloaliphatic radicals may be substituted by from 1 to 3 alkyl groups and where the phenyl group may have from 1 to 5 halogen atoms and/or from 1 to 3 substituents which are selected, independently of one another, from alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio and haloalkylthio, and where the amidic phenyl group may or may not be condensed with a saturated 5-membered ring which may or may not be substituted by one or more alkyl groups and/or may have a hetero atom selected from O and S, and
b) fungicides of the group of the dicarboximides and/or
c) a pyrimidine derivative of the formula III,
 in which R is methyl, propyn-1-yl or cyclopropyl, and/or
d) at least one active ingredient of the formula IV or V,
 and/or
e) a phthalimide derivative selected from the group consisting of the compounds VIa, VIb and VII
 and/or
f) a dinitroaniline of the formula VIII
 and/or
g) an arylsulfamide of the formula IX a or IXb
in a synergistically effective amount.
WO 97/08952 describes fungicidal mixtures which, in addition to compounds of the formula I, also comprise fenazaquin as further components. These are described as being very effective against Botrytis.
The amide compounds of the formula I are known per se and are described in the literature (EP-A 545 099).
Fungicides from the group of the dicarboximides are known to the person skilled in the art and are commercially available.
Also known are the pyrimidine derivatives III, their preparation and their activity against harmful fungi [R=methyl: DD-A 151 404 (common name: pyrimethanil); R=1-propynyl: EP-A 224 339 (common name: mepanipyrim); R=cyclopropyl: EP-A 310 550].
The compound IV is known from K. Gehmann, R. Nyfeler, A. J. Leadbeater, D. Nevill and D. Sozzi, Proceedings of the Brighton Crop Protection Conference, Pests and Diseases 1990, Vol. 2, p. 399 (common name: fludioxinil) and is commercially available from Novartis.
The compound V is known from D. Nevill, R. Nyfeler, D. Sozzi, Proceedings of the Brighton Crop Protection Conference, Pests and Diseases 1988, Vol. 1, p. 65 (common name: fenpiclonil).
U.S. Pat. Nos. 2,553,770; 2,553,771; 2,553,776 describe the compounds VIa (common name: captan) and VII (common name: folpet), their preparation and their activity against harmful fungi. The compound VIb (common name: captafol) is described in Phytopathology 52(1962), 52, 754.
Likewise, the compound VIII, its preparation and its use (CAS RN 79622-59-6, common name: fluazinam) are described in the literature.
The compounds IXa and IXb are known under the common names dichlofluanid and tolylfluanid, respectively, and are described in the German patent 1193498.
It is an object of the present invention to provide mixtures which have an improved activity against harmful fungi combined with a reduced total amount of active ingredients applied (synergistic mixtures), with a view to reducing the application rates and to improving the activity spectrum of the known compounds.
We have found that this object is achieved by the mixtures defined at the outset. Moreover, we have found that better control of harmful fungi is possible by applying the compounds I and the compounds II to VIII simultaneously, that is either together or separately, or by applying the compounds I and the compounds II to VIII in succession than when the compounds I or II to VIII are applied on their own.
The mixtures according to the invention have synergistic action and are therefore particularly suitable for controlling harmful fungi, in particular of Botrytis species.
In the context of the present invention, halogen is fluorine, chlorine, bromine and iodine and is in particular fluorine, chlorine and bromine.
The term “alkyl” includes straight-chain and branched alkyl groups. These are preferably straight-chain or branched C
1
-C
12
-alkyl and in particular C
1
-C
6
-alkyl groups. Examples of alkyl groups are alkyl such as, in particular, methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,2-dimethylpropyl, 1,1-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,3-dimethylbutyl, 1,1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 1,1,2-trimethylpropyl, 1,2,2-trimethylpropyl, 1-ethylbutyl, 2-ethylbutyl, 1-ethyl-2-methylpropyl, n-heptyl, 1-methylhexyl, 1-ethylpentyl, 2-ethylpentyl, 1-propylbutyl, octyl, decyl, dodecyl.
Haloalkyl is an alkyl group as defined above which is partially or fully halogenated by one or more halogen atoms, in particular by fluorine and chlorine. Preferably, there are from 1 to 3 halogen atoms present, and the difluoromethyl or the trifluoromethyl group is particularly preferred.
The above statements for the alkyl group and the haloalkyl group apply in a corresponding manner to the alkyl and haloalkyl groups in alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulfynyl and alkylsulfonyl.
The alkenyl group includes straight-chain and branched alkenyl groups. These are preferably straight-chain or branched C
3
-C
12
-alkenyl groups and in particular C
3
-C
6
-alkenyl groups. Examples of alkenyl groups are 2-propenyl, 2-butenyl, 3-butenyl, 1-methyl-2-propenyl, 2-methyl-2-propenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-methyl-2-butenyl, 2-methyl-2-butenyl, 3-methyl-2-butenyl, 1-methyl-3-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, 1,1-dimethyl-2-propenyl, 1,2-dimethyl-2-propenyl, 1-ethyl-2-propenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 1-methyl-2-pentenyl, 2-methyl-2-pentenyl, 3-methyl-2-pentenyl, 4-methyl-2-pentenyl, 1-methyl-3-pentenyl, 2-methyl-3-pentenyl, 3-methyl-3-pentenyl, 4-methyl-3-pentenyl, 1-methyl-4-pentenyl, 2-methyl-4-pentenyl, 3-methyl-4-pentenyl, 4-methyl-4-pentenyl, 1,1-dimethyl-2-butenyl, 1,1-dimethyl-3-butenyl, 1,2-dimethyl-2-butenyl, 1,2-dimethyl-3-butenyl, 1,3-dimethyl-2-butenyl, 1,3-dimethyl-3-butenyl, 2,2-dimethyl-3-butenyl, 2,3-dimethyl-2-butenyl, 2,3-dimethyl-3-butenyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl, 2-ethyl-2-butenyl, 2-ethyl-3-butenyl, 1,1,2-trimethyl-2-propenyl, 1-ethyl-1-methyl-2-propenyl and 1-ethyl-2-methyl-2-propenyl, in particular 2-propenyl, 2-butenyl, 3-methyl-2-butenyl and 3-methyl-2-pentenyl.
The alkenyl group may be partially or fully halogenated by one or more halogen atoms, in particular by fluorine or chlorine. The alkenyl group preferably has from 1 to 3 halogen atoms.
The alkynyl group includes straight-chain and branched alkynyl groups. These are preferably straight-chain and branched C
3
-C
12
-alkynyl groups and in particular C
3
-C
6
-alkynyl groups. Examples of alkynyl groups are 2-propynyl, 2-butynyl, 3-butynyl, 1-methyl-2-propynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 1-methyl-3-butynyl, 2-methyl-3-butynyl, 1-methyl-2-butynyl, 1,1-dimethyl-2-propynyl, 1-ethyl-2-propynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 1-methyl-4-pentynyl, 2-methyl-3-pentynyl, 2-methyl-4-pentynyl, 3-methyl-4-pentynyl, 4-methyl-2-pentynyl, 1,2-dimethyl-2-butynyl, 1,1-dimethyl-3-butyn

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