2-ALKYL-3-(HETERO)ARYL-8-AZABICYCLO[3.2.1]ALKANES AS PESTICIDES

A compound of formula (I) where A is a bidentate group of formula -CH2-X-CH2- (wherein X is methylene, sulphur or oxygen), X'C=CY or X'WC-CYZ (wherein X', W, Y and Z are, independently, hydrogen, hydroxy, R C(O)O, alkoxy, trialkylsilyloxy, cyano or halogen, or X' and W or Y and Z together with the carbon to which they are attached form a carbonyl group); Ar is optionally substituted aryl or optionally substituted heteroaryl; R is hydrogen, cyano, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkenyl, optionally substituted alkynyl, R CO, sulphonyl, CS2R or R X'' (where X'' represents oxygen or a group NR ), provided that when R is optionally substituted alkenyl or optionally substituted alkynyl, said group does not have an unsaturated carbon atom bonding directly to the ring nitrogen of formula (I); R is hydrogen, cyano, hydroxy, optionally substituted alkyl, optionally substituted alkoxy, amino, nitro, isocyanato, optionally substituted heteroaryl, amidoximido, HN=C(R ), R R C=N, R CO, R CONH, optionally substituted alkenyl or optionally substituted alkynyl; R is C1-2 alkyl; R is hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted alkoxy, optionally substituted alkenyloxy, optionally substituted aryloxy or NH2; R , R , R and R are, independently, hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkenyl, optionally substituted alkynyl, alkoxycarbonyl or CO2H; R is hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted alkoxy, optionally substituted alkenyloxy or optionally substituted aryloxy; R is hydrogen, optionally substituted alkyl or optionally substituted alkenyl; R is hydrogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted alkoxy, optionally substituted alkenyloxy, optionally substituted aryloxy or NH2; or an acid addition salt, quaternary ammonium salt or N-oxide derived therefrom, processes for preparing these compounds, compositions comprising them and methods of using them to combat or control insects, acarines, nematodes or molluscs. L'invention concerne un composé de formule (I) dans laquelle A représente un groupe bidenté de formule -CH2-X-CH2 (où X représente méthylène, soufre ou oxygène ), X'C=CY ou X'WC-CYZ (où X', W et Z représentent, indépendamment, hydrogène, hydroxy, R C(O)O, a