| abstract |
Novel 2-(2,2-difluorocyclopropyl)-acetic acid derivatives of formula i wherein a is oxygen or -nr1- b is c2-c6alkylene, d id oxygen, sulfur or -o-ch2-, e is phenyl;phenyl substituted by from one to three substituents selected from the group halogen, c1-c4alkyl, c1-c3haloalkyl and c1-c4alkoxy; a five-membered aromatic heterocycle having from one tothree hetero atoms selected from the group nitrogen,oxygen and sulfur, a five-membered aromatic heterocycle having from one to three hetero atoms selected from the group nitrogen, oxygen and sulfur that is substituted by one or two substituents selected from the group halogen, c1-c4alkyl and c1-c3-haloalkyl; a six-membered aromatic heterocycle having from one to three nitrogen atoms; or a six-membered aromatic heterocycle having from one to three nitrogen atoms that is substituted by one or two substituted by one ot two substituents selected from the group halogen, c1-c4alkyl and c1-c3 haloalkyl, l is halogen or methyl, n is 0, 1 or 2 and r1 is hydrogen, c1-c4alkyl, phenylthio or tolythio, can be used as pesticides. Especially insects and arachnids can be controlled. |