4-fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl-...

Details 4-fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl-... 4-fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl-...

C - Chemistry, Metallurgy

07

C

260/479.8

C07C 69/743 (2006.01) A01N 53/00 (2006.01) C07C 61/35 (2006.01)

Patent

CA 1156254

-36- 4-Fluoro-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl- cyclopropanecarboxylates, a process for their preparation snd their use in pest-combating agents A B S T R A C T 4-Fluorù-3-phenoxy-benzyl 3-alken-1-yl-2,2-dimethyl- cyclopropanecarboxylates have the general formula (I) Image wherein R represents alkyl or alkenyl, R represents hydrogen or alkyl, with the proviso that R and R1 are different, and R2 represents hydrogen, cyano or alkyl, alkenyl or alkynyl having in each case up to 4 carbon atoms, and are obtained if 3-alken-1-yl-2,2-dimethyl-cyclo- propanecarboxylic acids of the general formula Image (II) wherein R and R1 have the meaning given above, or reactive derivatives of these acids, are reacted with 4-fluoro-3-phenoxy-benzyl alcohols of the general formula (III), Image Le A 20 910 wherein R2 has the meaning given above, or with reactive derivatives of these alcohols, if appropriate in the presence of an acid acceptor and/or catalyst, and if appropriate using a diluent. The compounds of the formula (I) have a high pesticidal activity, especially against insects or acarids. Le A 20 910

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