Method for the Production of N-Substituted (3-Dihalomethyl-1-Methyl-Pyrazole-4-yl) Carboxamides
申请人:Zierke Thomas
公开号:US20100174094A1
公开(公告)日:2010-07-08
The present invention relates to a process for preparing N-substituted (3-dihalomethylpyrazol-4-yl)carboxamides of the formula (I)
in which R
1
is optionally substituted phenyl or C
3
-C
7
-cycloalkyl, R
1a
is hydrogen or fluorine, or R
1a
together with R
1
is optionally substituted C
3
-C
5
-alkanediyl or C
5
-C
7
-cycloalkanediyl, R
2
is C
1
-C
6
-alkyl, C
2
-C
6
-alkenyl, C
2
-C
6
-alkynyl or C
1
-C
4
-alkoxy-C
1
-C
2
-alkyl, X is F or Cl and n is 0, 1, 2 or 3; which comprises
A) providing a compound of the formula (II)
in which X is F or Cl, Y is Cl or Br and R
2
has one of the meanings given above and
B) reacting a compound of the formula (II) with carbon monoxide and a compound of the formula (III)
in which R
1
, R
1a
and n have one of the meanings given above; in the presence of a palladium catalyst;
to intermediates used for the preparation according to the process according to the invention, and also to processes for their preparation.
PYRIDINECARBOXAMIDES, USEFUL-PLANT-PROTECTING COMPOSITION COMPRISING THEM AND PROCESSES FOR THEIR PREPARTION AND THEIR USE
申请人:Ziemer Frank
公开号:US20080269059A1
公开(公告)日:2008-10-30
Compounds of the formula (I), or salts thereof,
in which R
1
to R
4
are as defined in formula (I) of claim
1
are suitable as useful-plant-protecting agents for reducing or preventing harmful effects of agrochemicals on the useful plants and their method of preparation are described.
According to the invention, compounds of the general formula (I) or salts thereof (pyridine-2-oxy-3-carboxamides),
in which R
1
is a (C
1
-C
4
)-haloalkyl radical can be employed as safeners, i.e. as agents for preventing or reducing phytotoxic effects of pesticides, preferably herbicides, on useful plants.
PYRIDINECARBOXAMIDES, USEFUL-PLANT-PROTECTING COMPOSITION COMPRISING THEM AND PROCESSES FOR THEIR PREPARATION AND THEIR USE
申请人:ZIEMER Frank
公开号:US20120252670A1
公开(公告)日:2012-10-04
Compounds of the formula (I), or salts thereof,
in which R
1
to R
4
are as defined in formula (I) of claim
1
are suitable as useful-plant-protecting agents for reducing or preventing harmful effects of agrochemicals on the useful plants and their method of preparation are described.
Pyridoncarboxamide, diese enthaltende nutzpflanzenschützende Mittel und Verfahren zu ihrer Herstellung und deren Verwendung
申请人:Bayer CropScience AG
公开号:EP1987717A1
公开(公告)日:2008-11-05
Verbindungen der Formel (I), oder deren Salzen,
worin R1 bis R4 wie in Formel (I) von Anspruch 1 definiert sind,
eigen sich als nutzpflanzenschützende Mittel zum Reduzieren oder Verhindern von Schadwirkungen von Agrochemikalien an den Nutzpflanzen.
Einige der Verbindungen der Formel (I) oder deren Salze sind neu (vgl. Anspruch 9) und können nach dem Verfahren von Anspruch 10 hergestellt werden.