| abstract |
Cyclopropanecarboxylic acid esters represented by the formula, WHEREIN R1 represents hydrogen or methyl; R2 represents methyl, 2-methyl-1-propenyl or 2-methoxy-carbonyl-1-propenyl when R1 is hydrogen and R2 represents methyl when R1 is methyl; R3 represents hydrogen or methyl; and R4 represents a lower alkylene radical containing or not containing oxygen or sulfur atom in its carbon chain, the alkylene having up to four carbon atoms, which may be useful as insecticides having high insecticidal effects and low toxicity to mammals. |