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Synthesis and Herbicidal Activity of Novel N-Allyloxy/Propargyloxy Aryloxyphenoxy Propionamide Derivatives |
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| Authors: | LIU Qixing HUANG Mingzhi LIU Aiping HU Aixi LEI Manxiang REN Yeguo HUANG Lu |
| Affiliation: | 1. College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China; 2. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410007, P. R. China; 3. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China |
| Abstract: | A series of novel N-allyloxy/propargyloxy aryloxyphenoxy propionamide compounds was designed and prepared. The structures of the synthesized compounds were confirmed by means of 1H NMR, 13C NMR, LC-MS, elemental analysis and IR. The bioassay results indicate that when against Digitaria sanguinalis and Echinochloa crus-galli, (R)-N-(propargyloxy)-2-{4-[(6-chloroquinoxalin-2-yl)oxy]phenoxy}propanamide(1m)(IC50=6.8 and 6.5 g/hm2, respectively) and (R)-N-(allyloxy)-2-{4-[(6-chloroquinoxalin-2-yl)oxy]phenoxy}propanamide(1r)(IC50=7.4 and 6.0 g/hm2, respectively) are much more effective than commercial aryloxyphenoxypropionic ester herbicide clodinafop-propargyl(IC50=46.5 and 14.6 g/hm2, respectively). The results of crop selectivity show that compounds 1m and 1r are safe to soybean, rape and cotton and can be used as herbicides for soybean, rape and cotton crop. |
| Keywords: | Aryloxyphenoxy propionamide Allyloxy Propargyloxy Herbicidal activity Crop selectivity |
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