Abstract
IT appears that any modification in the pentadienyl side-chain of the pyrethrin molecules induces a profound depression in the insecticidal activity1. Although the distribution of the double bonds in the side-chain of pyrethrolone is not yet fully established2, there seems to be little doubt that there is either a terminal = CHCH3 grouping or—less probably—the = CH2 group. Allyl phenols have been found to possess insecticidal properties3, and it appeared of interest to compare the toxicity in fly sprays of corresponding derivatives of the isomeric phenols eugenol (which contains the allyl grouping) and iso-eugenol (containing the propenyl grouping).
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References
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Harvill, E. K., and Arthur, J. M., Contrib. Boyce Thompson Inst., 13, (2), 79 (1943).
Haller, H. L., LaForge, F. B., and Sullivan, W. N., J. Econ. Ent., 35, 247 (1942). Cf. Parkin, A. E., and Green, A. A., Nature, 154, 16 (1944).
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WEST, T. Toxicity to Flies of Derivatives of Eugenol and Cis- and Trans- lsoeugenol. Nature 154, 488 (1944). https://doi.org/10.1038/154488a0
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DOI: https://doi.org/10.1038/154488a0
