| 摘要 |
PROBLEM TO BE SOLVED: To obtain a herbicide that has the high herbicidal action with retention of needed selectivity and the increase in the soil degradation by using readily available isophorone as a starting material in order to overcome the inconvenience of the known heteroaryloxy acetamide that this conventional herbicide can manifest a considerable level of the activity against a plurality of weeds, but shows unsatisfactory selectivity and undesirable persistency to the environment. SOLUTION: This invention provides a novel compound represented by formula I, wherein Het represents the nitrogen atom including a 5-or 6-membered heteroaromatic group which may be substituted or may be benzo-condensed; R1 is an alkyl, an alkoxyalkyl or cycloalkyl group; R2s are independently from each other alkyl or alkenyl groups; m is 0 or an integer of 1-6, provides herbicidal composition containing the novel compound as an active ingredient and the resultant herbicidal composition can be used in a variety of agricultural methods.
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