Insecticidal Activity of Novel Trihaloimidazole Derivatives against a Wild Colony of German Cockroaches(Blattella germanica)(Pesticide Chemistry)

概要

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Structure-activity relationships of novel 1-alkoxymethyl-2,4,5-trihaloimidazole compounds against a wild colony of German cockroaches resistant to pyrethroids (0-colony) are reported. Among them, 1-methoxymethyl-2-bromo-4,5-dichloroimidazole and 1-isopropoxymethyl-2-bromo-4,5-di-chloroimidazole were very effective by a filter paper contact method. The variation in insecticidal activity is shown to be related to the length and branching of the alkyl chain of the 1-substituents. Above all, 1-(4-bromobutoxymethyl)-2-bromo-4,5-dichloroimidazole and 1-(4-bromo/chlorobutoxy-methyl)-2,4,5-trichloroimidazole exhibited low acute oral toxicity to mice and good activity by a heating fumigant test, representing one of the practical applications. The trihaloimidazole derivatives had almost two-fold higher activity against 0-colony insects than against the susceptible strain.
社団法人日本農芸化学会の論文
1991-06-23