| abstract |
Perhaloalkylvinylcyclopropanecarboxylates having the general formulan are disclosed wherein one of Y and Z is a perhaloalkyl group having 1 to 4 carbon atoms and the other is hydrogen, halogen, lower alkyl, phenyl, phenyhhio or benzyl, with the proviso that Y and Z may be combined to form a perhalocy- dopentylidene group; R is halogen, hydroxy, lower alkoxy or -OR' in which R' represents an alcohol residue which forms an insecticidal ester when combined with chrysanthemic acid or a 3 - ( 2 , 2 - d i h a l o v i n y l ) - 2 , 2 - dimethylcyclopropanecarboxylic acid; R 7 is hydrogen, lower alkylcarbonyl, lower alkoxycarbonyl or cyano with the proviso that when R is -OR 1 , R 7 is hydrogen. The insecticidal efficacy and preparation of the compounds and intermediates therefor are described and exemplified. |