FOERFARANDE FOER FRAMSTAELLNING AV NYA CYLOPROPANKARBOXYLSYRAESTRAR MED EN POLYHALOGENSUBSTITUENT, ANVAENDBARA FOER BEKAEMPNING AV PARASITER HOS VARMBLODIGA DJUR

摘要

Novel cyclopropane carboxylic acid esters of the formula I wherein X1 is selected from the group consisting of hydrogen, fluorine, chlorine and bromine, X2 is selected from the group consisting of fluorine, chlorine and bromine, X3 is selected from the group consisting of chlorine, bromine and iodine and R is selected from the group consisting of and benzyl optionally substituted with at least one member of the group consisting of alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 6 carbon atoms, alkenyloxy of 2 to 6 carbon atoms, alkadienyl of 4 to 8 carbon atoms, methylenedioxy, benzyl and halogens, R1 is selected from the group consisting of hydrogen and methyl, R2 is selected from the group consisting of monocyclic aryl and -CH2-C 3BOND CH,R3 is an aliphatic of 2 to 6 carbon atoms having at least one double bond, R4 is selected from the group consisting of hydrogen, -CN and -C 3BOND CH, R5 is selected from the group consisting of chlorine and methyl, n is 0, 1 or 2, R6, R7, R8 and R9 are individually selected from the group consisting of hydrogen, chlorine and methyl and S/I indicates that the ring may be aromatic, dihydro or tetrahydro having pesticidal properties, and a process for their preparation.