Insecticidal n-substituted (6-halooalkylpyridin-3-yl)-alkyl sulfoximines

A compound of the formula (I)

• wherein
• X represents COOR4;
• L represents a single bond or R1, S and L taken together represents a 4-, 5- or 6-membered ring;
• R1 represents (C1-C4) alkyl;
• R2 and R3 independently represent hydrogen, (C1-C4) alkyl, fluoro, chloro or bromo;
• n is an integer from 0-3;
• Y represents (C1-C4) haloalkyl;
• and
• R4 represents (C1-C3) alkyl.