| 摘要 |
<p>Substituted styrylcyclopropanecarboxylic acid esters of the formula <IMAGE> in which R represents C1-4-alkyl or an alcohol radical customary in pyrethroids, R1 represents alkoxy or alkylthio, either of which is optionally substituted by halogen and R2 represents hydrogen or alkoxy, or R1 and R2 together represent optionally halogen-substituted alkylenedioxy, and R3 represents hydrogen or chlorine, exhibit arthropodicidal activity. A novel synthesis is shown involving reaction of <IMAGE> <IMAGE> in the presence of an alkali metal cyanide to produce an end product wherein R is an alpha -cyano-3-phenoxybenzyl ester. <IMAGE> is reacted with <IMAGE> in the presence of a base to produce certain novel intermediates.</p> |
