Optically active herbicidal (r)-phenoxypropionic acid-n-methyl-n-2-fluorop-henyl amides
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United States of America Patent
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Issued Date -
Feb 24, 2005
app pub date -
Oct 1, 2004
filing date -
Nov 1, 2001
priority date (Note) -
Abandoned
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Abstract
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, NH.sub.2, CO.sub.2H, C.sub.1-C.sub.6 alkylamino substituted with 1 or 2 of C.sub.1-C.sub.3 alkyl, C.sub.1-C.sub.6 alkyl, C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.3 haloalkyl, C.sub.1-C.sub.3 haloalkoxy, C.sub.2-C.sub.4 alkoxyalkoxy, C.sub.1-C.sub.4 alkylthonyl, C.sub.1-C.sub.4 alkylsulfonyl, C.sub.2-C.sub.6 alkenyl, C.sub.2-C.sub.6 alkinyl, C.sub.2-C.sub.6 alkenyloxy, C.sub.2-C.sub.6 alkinyloxy, C.sub.1-C.sub.3 alkoxycarbonyl, or C.sub.1-C.sub.3 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. 1
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