| abstract |
A compound of formula (I): wherein R 1 is pyrid-4-yl optionally substituted by one to four substituents independently selected from halogen, C 1-3 alkyl or C 1-3 haloalkyl; R 2 is hydrogen, halogen, C 1-4 haloalkyl or C 1-4 haloalkoxy; R 3 is trifluoromethyl, difluoromethyl or difluoromethoxy and R 4 is hydrogen, fluoro or chloro, or R 3 is fluoro, chloro or bromo and R 4 is fluoro, chloro or trifluoromethyl; and R 5 is hydrogen or halogen; or salts or N-oxides thereof. Furthermore, the present invention relates to intermediates used to prepare compounds of formula (I), to methods of using them to combat and control insect, acarine, mollusc and nematode pests and to insecticidal, acaricidal, molluscicidal and nematicidal compositions comprising them. |