Pyrethroids and their use for controlling pests

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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514444, 514471, 549 60, 549330, 549483, 549488, 549491, 549496, 549497, 549500, 549501, A01N 5300, C07D30754

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active

048701009

ABSTRACT:
2-benzylfuryl compounds of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different substituents and are each hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkylthio, alkenyl or haloalkenyl, each of not more than 6 carbon atoms, n being 1, 2 or 3 where R.sup.3 is not hydrogen, and R.sup.4 and R.sup.5 are each hydrogen or alkyl of not more than 6 carbon atoms, R is --CHO or CHR.sup.6 OA, R.sup.6 is hydrogen, cyano, alkyl, alkenyl, haloalkenyl or alkynyl, each of not more than 6 carbon atoms, or carboxamide, and A is either hydrogen or a radical of an acid typical for pyrethroids, with the proviso that R.sup.2 is not hydrogen, chlorine, bromine, methyl or methoxy when R.sup.1 is hydrogen or methyl and R.sup.3 and A are each hydrogen, and furthermore with the proviso that R.sup.1 and R.sup.2 are not methyl when A is a radical of tetramethylcyclopropanecarboxylic acid, and finally with the proviso that R.sup.2 is not methyl, chlorine, bromine or methoxy and R.sup.1 and R.sup.3 are not hydrogen when A is a radical of chrysanthemumic acid, their preparation and their use as intermediates for crop protection agents or as crop protection agents.

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M. Elliott, A. Farnham, N. Janes and P. Needham, "Insecticidal Activity of the Pyrethrins and Related Compounds, III. Methyl-Alkenyl-, and Benzylfurfuryl and -3-furylmethyl Chrysanthemates," Pestic Sci., 5 (1974), 491-496.
M. Elliott, N. Janes and B. Pearson, "The Pyrethrins and Related Compounds XIII, Insecticidal Methyl-Alkenyl and Benzyl-Substituted Furfuryl and Furylmethyl Chrysanthemates", Pestic. Sci., 2 (1971), 243-248.

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