| abstract |
Novel esters in all possible isomeric forms of the formula ##STR1## wherein R is selected from the group consisting of (a) optionally unsaturated alkyl of 1 to 8 carbon atoms and optionally unsaturated cycloalkyl or cycloalkyl-alkyl of 3 to 8 carbon atoms optionally substituted with at least one member of the group consisting of halogen, ##STR2## aryl optionally substituted with at least one member of the group consisting of --OH, alkoxy of 1 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms, halogen, ##STR3## R' is alkyl of 1 to 8 carbon atoms, R" and R"' are individually selected from the group consisting of hydrogen and alkyl of 1 to 8 carbon atoms, AlK 1 , AlK 2 and AlK 3 are individually alkyl of 1 to 18 carbon atoms (b) aryl of 6 to 14 carbon atoms optionally substituted with at least one substituent selected from the group consisting of --OH, alkoxy of 1 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms, halogen, --OCF 3 , --CF 3 and --SCF 3 and (c) heterocycle optionally substituted with at least one member of the group consisting of --OH, alkoxy of 1 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms, halogen, --CF 3 , --OCF 3 and --SCF 3 , B is selected from the group consisting of optionally unsaturated alkyl of 1 to 18 carbon atoms, optionally unsaturated cycloalkyl of 3 to 18 carbon atoms and the remainder of an alcohol used in synthesis of pyrethrinoid esters, X is halogen and the ethylenic double bond may have Z or E geometry having parasitic activity, especially insecticidal acaricidal and nematocidal activity. |