Multi-substituted pyridyl sulfoximines and their use as insecticides

1. A compound of the formula (I)

wherein

X represents CN or NO 2 ;

Y represents halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy, C 1 -C 4 haloalkoxy, CN or NO 2 ;

Z represents halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 haloalkyl, or haloalkoxy;

m represents an integer from 1-3;

L represents a single bond;

R 1 represents C 1 -C 4 alkyl;

R 2 and R 3 independently represent hydrogen, halogen, or C 1 -C 4 alkyl;

n represents an integer from 0-3.

2. A compound of claim 1 wherein Z represents halogen and m represents 1.

3. A compound of claim 1 wherein X represents NO 2 or CN.

4. A compound of claim 1 wherein R 2 and R 3 independently represent hydrogen or C 1 -C 4 alkyl.

5. A compound of claim 1 wherein R 1 represents CH 3 , L represents a single bond, i.e., having the structure:

wherein n is an integer from 1-3, and X, Y, Z, R 2 , R 3 and m are as previously defined.

6. A compound of claim 1 wherein Y represents halogen or C 1 -C 2 alkyl.

7. A composition for controlling insects which comprises a compound of any one of claims 1 - 4 , and 5 - 6 in combination with a phytologically-acceptable carrier.