| 摘要 |
New compounds are described that fall within the general formula I
<CHEM>
wherein R<1> is hydrogen or a methoxy, ethoxy, propoxy, butoxy, tetrafluoroethoxy, methylthio, ethylthio, propylthio, fluoro, chloro, bromo, methyl, ethyl, or nitro group, and R<2> is hydrogen or a methyl group, or R<1> and R<2> together form a methylenedioxy group; and R<3> is hydrogen, or halogen or an esterifying group, as well as other derivatives of the acid. The esterifying group may be a lower alkyl group, or one of the following groups (a) to (f):-
(a) 3-phenoxybenzyl
(b) 2-benzyl-4-furylmethyl
(c) alpha -cyano-3-phenoxybenzyl
(d) 3,4-methylenedioxybenzyl
(e) alpha -ethynyl-3-phenoxybenzyl
(f) alpha -cyano-3-(4 min -chlorophenoxyl)-benzyl
and Y<1>, Y<2>, Y<3>, Y<4>, Y<5> and Y<6> are the same or different groups and each is hydrogen or a fluoro, bromo or chloro group, with the proviso that when R<1> is fluoro, chloro, bromo or methyl and R<2> is hydrogen, then one of Y<1> to Y<6> is other than hydrogen. Processes of making the compounds are described. The compounds in which R<3> is one of groups (a) to (f) are insecticides and insecticidal methods and compositions containing them are described.
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