| abstract |
Disclosed herein are cyanoketone derivatives of the following formula (1) <IMAGE> (1) such as 1-cyano-1-piperidinocarbonyl-3-[4-(2-chloro-4-trifluoromethylphenoxy)p henoxy]-2-butanone, 1-cyano-1-piperidinocarbonyl-3-[4-(3-chloro-5-trifluoromethyl-2-pyridy loxy)phenoxy]-2-butanone, 1-cyano-1-(N-methyl-N-dichlorophenyl)aminocarbonyl-3-[4-(2-quinoxalylo xy)phenoxy]-2-butanone, 1-cyano-1-(N,N-dibutyl)aminocarbonyl-3-[4-(3-chloro-5-trifluoromethyl- 2-pyridyloxy)phenoxy-2-butanone, and the like, which are characterized by excellent herbicidal activity and effectiveness against a variety of gramineous weeds. |