Abstract
Pyrethroids gained increasing economic importance due to the photostability of permethric acid, fenvaleric acid and 3-phenoxybenzylalcohol. The importance of this finding was emphasized by the increase of activity by an α-cyano group [545]. This effect is commercially exploited with the esters of 3-phenoxybenzaldehyde cyanhydrine cycloprothrin, cyhalothrin, cypermethrin, cypothrin, deltamethrin, fenpropathrin fenvalerate, flucythrinate, fluvalinate and phenothrin. The synthesis of 3-phenoxytoluene 274, known for a long time [546], follows the classical Ullmann-reaction (Reaction scheme 198) from m-cresol-sodium salt and chlorobenzene in the presence of copper compounds [547–551].
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© 1990 Springer-Verlag Berlin Heidelberg
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Naumann, K. (1990). Synthesis of Important Pyrethroid Alcohols. In: Haug, G., Hoffmann, H. (eds) Synthetic Pyrethroid Insecticides: Chemistry and Patents. Chemistry of Plant Protection, vol 5. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-74852-3_2
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DOI: https://doi.org/10.1007/978-3-642-74852-3_2
Publisher Name: Springer, Berlin, Heidelberg
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