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The insecticidal activities against houseflies (Musca domestica L.) and mustard beetles (Phaedon cochleariae Fab.) of the chrysanthemate bioresmethrin, and of 31 related 5‐benzyl‐3‐furylmethyl 2,2‐dimethylcyclopropanecarboxylates with alkenyl, alkadienyl or alkoxycarbonylalkenyl substituents at position 3 of the cyclopropane ring are compared to determine the relative influence of the isobutenyl sidechain (as in chrysanthemates) and of the other side chains. Several substituents, in particular (E)‐ or (Z)‐butadienyl or ‐pentadienyl, give considerably greater activity than isobutenyl but alkoxycarbonyl compounds are less potent.
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Elliott et al. (1976) studied this question.
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