Herbicidal phenoxypropionic acid n-alkyl-n-2-fluorophenyl...

A - Human Necessities – 01 – N

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A01N 43/76 (2006.01) C07C 233/07 (2006.01) C07C 235/16 (2006.01) C07C 309/04 (2006.01) C07C 309/28 (2006.01) C07C 309/66 (2006.01) C07C 309/73 (2006.01) C07D 263/58 (2006.01)

Patent

CA 2338685

The present invention relates to novel herbicidal phenoxypropionic acid N- alkyl-N-2-fluorophenyl amides represented in formula (1), a method for preparing thereof, their use to control barnyard grass produced from rice and composition as suitable herbicides. In said formula, R is methyl or ethyl group; X is hydrogen, halogen, cyano, C1~C6 alkyl, C1~C6 alkoxy, C1~C3 haloalkyl substituted with 1 to 3 of halogen atom(s), C1~C3 haloalkoxy substituted with 1 to 3 of halogen atom(s), C2~C4 alkoxyalkoxy, phenoxy, benzyloxy, C2~C6 alkenyl, C2~C6 alkinyl, C2~C6 alkenyloxy, C2~C6 alkinyloxy, or phenyl group; Y is hydrogen or fluoro; n is an integer of 1 or 2 and when n is 2, X can be in a combination of other substituents.

L'invention concerne des nouveaux amides n-alkyle-N-2-fluorophényliques d'acide phénoxypropionique herbicides, représentés par la formule (1), leur procédé de préparation, leur utilisation pour lutter contre les pieds-de-coq produits par le riz et des compositions convenant en tant qu'herbicides. Dans ladite formule (1), R représente un groupe méthyle ou éthyle; X représente hydrogène, halogène, cyano, alkyle C1-C6, alcoxy C1-C6, haloalkyle C1-C3 substitué par 1 à 3 atomes d'halogène, haloalcoxy C1-C3 substitué par 1 à 3 atomes d'halogène, alcoxyalcoxy C2-C4, phénoxy, benzyloxy, alcényle C2-C6, alcinyle C2-C6, alcényloxy C2-C6, alcinyloxy C2-C6 ou un groupe phényle. Y représente hydrogène ou fluoro; n vaut 1 ou 2 et lorsque n vaut 2, X peut figurer dans une combinaison d'autres substituants.

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