| 摘要 |
<p>NEW MATERIAL:A pyridyl-2-oxy-phenoxy-propionic acid amide derivative of formula I (X is H, Cl; R is H, Cl, methyl, methoxy). EXAMPLE:N-Cyano-N-phenyl-2-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy )-pheno xy]propinamide. USE:Herbicide: it shows good selectivity to beans, cotton, carrot, potato, beet, cabbage, mustard, mustard plant, ground nuts, radish, tobacco, tomato, cucumber, etc. It causes no chemical injury on application with usual concentration. PREPARATION:For example, a compound of formula II (Hal is halogen) is allowed to react with another compound of formula III to give the compound of formula I.</p> |
