Paper
Synthesis and herbicidal activity of geometrical isomers of methyl [[[1-[5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrophenyl]-2-methoxyethylidene]amino]oxy]acetate (AKH-7088).
Published Mar 1, 1990 · Yoshiharu Hayashi, H. Kouji
Journal of Agricultural and Food Chemistry
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Abstract
The E and Z geometrical isomers of methyl [[[1-[5-[2-chloro-4-(trifluoromethy)phenoxy]-2-nitrophenyl]- 2-methoxyethylidene]amino]oxy]acetate (Code No. AKH-7088) were separately synthesized, and their molecular conformations were determined by two-dimensional NMR spectroscopy. Greenhouse testing showed no significant difference between the herbicidal effects of the two isomers on broadleaf weeds such as velvetleaf, cocklebur, and morningglory in soybeans, in postemergent applications of 0.035-0.28 kg/ha. Mixtures of the two isomers in various proportions exhibited practically the same biological effects as those of each isomer alone. Soybeans exhibited excellent tolerance to the isomers and their mixtures.
Both E and Z geometrical isomers of AKH-7088 show no significant difference in herbicidal effects on broadleaf weeds in soybeans, and their mixtures show excellent soybean tolerance.
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