Poison baits containing N-phenyl or N-pyridyl pyrazoles for cont

Details Poison baits containing N-phenyl or N-pyridyl pyrazoles for cont Poison baits containing N-phenyl or N-pyridyl pyrazoles for cont

1998-08-24

1999-10-26

Kight, John

Drug, bio-affecting and body treating compositions

Baits, attractants, or lures

5462754, 5462761, 5483674, 5483707, 5483717, A01N 2500, C07D 3144

Patent

active

059723300

DESCRIPTION:

BRIEF SUMMARY
The invention relates to poisoned baits for controlling harmful insects.
The invention hopes to make available to users poisoned baits for combating harmful insects, which have excellent attractant and baiting properties and are highly effective against various insects which it is desired to control by using poisoned baits.
The invention relates to poisoned baits which can be used for controlling harmful parasites, in particular insects, and which are composed of an agent that gels upon hydration and comprise, as active material, a 1-arylpyrazole derivative of general formula (I): ##STR1##
in which:
R.sub.1 represents a CN or methyl radical or a halogen atom;
R.sub.2 represents S(O).sub.n R.sub.3 or a 4,5-dicyanoimidazol-2-yl or haloalkyl radical
R.sub.3 represents an alkyl or haloalkyl radical;
R.sub.4 represents hydrogen, a halogen atom or a radical selected from amongst the following radicals: NR.sub.5 R.sub.6, S(O).sub.m R.sub.7, C(O)R.sub.7, C(O)OR.sub.7, alkyl, haloalkyl, OR.sub.8 and N.dbd.C(R.sub.9) (R.sub.10);
R.sub.5 R.sub.6 independently of one another represent a hydrogen atom or an alkyl, haloalkyl, C(O)alkyl, alkoxycarbonyl or S(O).sub.r CF.sub.3 radical; or else R.sub.5 and R.sub.6 together can form a divalent alkylene radical which can be interrupted by one or more divalent hetero atoms such as oxygen or sulphur;
R.sub.7 represents an alkyl or haloalkyl radical;
R.sub.8 represents an alkyl or haloalkyl radical or a hydrogen atom;
R.sub.9 represents an alkyl radical or a hydrogen atom;
R.sub.10 represents a phenyl or heteroaryl radical which can optionally be unsubstituted or substituted by one or more halogen atoms or a radical selected from amongst the following radicals: --OH, --O-alkyl, --S-alkyl, cyano and alkyl;
R.sub.11 and R.sub.12 independently of one another represent hydrogen, a halogen atom or a CN or NO.sub.2 radical,
R.sub.13 represents a halogen atom or a haloalkyl, haloalkoxy, S(O).sub.q CF.sub.3 or SF.sub.5 radical;
X represents a trivalent nitrogen atom or a C--R.sub.12 radical, the three other valencies of the carbon atom forming part of the aromatic nucleus;
m, n and q independently of one another represent an integer equalling 0, one or two;
with the proviso that, if R.sub.1 represents a methyl radical, then either R.sub.3 represents a haloalkyl radical, R.sub.4 represents NH.sub.2, R.sub.11 represents Cl, R.sub.13 represents CF.sub.3 and X represents N; or R.sub.2 represents a 4,5-dicyanoimidazoly 2-Yl radical, R.sub.4 represents Cl, R.sub.11 represents Cl, R.sub.13 represents CF.sub.3 and X represents .dbd.C--Cl.
The alkyl radicals generally contain from 1 to 6 carbon atoms.
A preferred group of the 1-arylpyrazoles according to the invention is that in which:
R.sub.1 represents CN; R.sub.3 represents a haloalkyl radical; R.sub.4 represents NH.sub.2 ; X represents C--R.sub.12 ;
R.sub.11 and R.sub.12 independently of one another represent a halogen atom; and
R.sub.13 represents a haloalkyl radical.
A particularly preferred compound is 5-amino-1-(2,6-dichloro-4-(trifluoromethylphenyl)-4-trifluoromethylsulphin yl-3-cyanopyrazole, which is termed "compound (A)" in the description hereinbelow. Compound (A) can be prepared by the processes described in European Patent Application A-0295117.
The compounds of general formula (I) can be prepared by known processes, for example those described in International Patent Applications Nos. WO 87/3781, 93/6089 and 94/21606 as well as in European Patent Applications 295117, 403300, 385809 or 679650, German Patent Application 19511269 and U.S. Pat. Nos. 5,232,940 and 5,236,938 or by other processes known to those in the art which are skilled in chemical synthesis, in particular through the publications in Chemical Abstract and in the literature to which these works refer. The compositions comprising the compounds of general formula (I) can also be prepared by prior-art methods or by similar methods.
The following products may be used, for example, as gelling agent according to the invention: Gellan gum, carrageenan gum, agar agar, gelati

REFERENCES:
patent: 5236938 (1993-08-01), Huang et al.
patent: 5360910 (1994-11-01), Huang et al.
patent: 5547974 (1996-08-01), Hatton et al.
patent: 5567429 (1996-10-01), Senbo
patent: 5614182 (1997-03-01), Davidson et al.

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