R. Maguire
Jul 1, 1990
Citations
2
Influential Citations
41
Citations
Journal
Journal of Agricultural and Food Chemistry
Abstract
Chiral high-performance liquid chromatographic analyses have shown that deltamethrin [(S)-α-cyano-3-phenoxybenzyl(1R,3R)-cis-2,2-dimethyl-3-(2,2-dibromovinyl)cyclopropanecarboxylate] in natural water in the dark is subject to cis/trans isomerization yielding the α-S, 1S cis isomer 2'-deltamethrin, which is inactive against mice and insects. Sunlight irradiation of deltamethrin as a thin film, on potato leaves, in natural water and in hexane was, however, only a partial detoxification step. Although is produced the inactive 2'isomer as well as the inactive α-S, 1S trans isomer 4'-deltamethrin, it did produce in addition the α-S, 1R trans isomer 3-deltamethrin, which does retain some activity toward mice and insects, albeit less than the parent deltamethrin