OPTICALLY ACTIVE HERBICIDAL (R)-PHENOXYPROPIONIC ACID-N-METHYL-N-2-FLUOROPHENYL AMIDES

摘要

The present invention relates to optically active herbicidal (R)-phenoxypropionic acid N-methyl-N-2-fluorophenyl amide compounds represented in the following formula (1), a method for preparing thereof, their use to prevent generation of barnyard grass produced from rice and composition as suitable herbicides, (I) wherein X is hydrogen, halogen, hydroxy, NH2, CO2H, C1-C6 alkylamino substituted with 1 or 2 of C1-C3 alkyl, C1-C6 alkyl, C1-C6 alkoxy, C1-C3 haloalkyl, C1-C3 haloalkoxy, C2-C4 alkoxyalkoxy, C1-C4 alkylthonyl, C1-C4 alkylsulfonyl, C2-C6 alkenyl, C2-C6 alkinyl, C2-C6 alkenyloxy, C2-C6 alkinyloxy, C1-C3 alkoxycarbonyl, or C1-C3 alkylcarbonyl; is hydrogen or fluoro; and n is an integer of 0 to 2, wherein X can be a combination of other substituents when n is 2.