| abstract |
(57) [Summary] Formula I: Wherein R 1 and R 2 are each hydrogen, nitro, halogen, cyano, thiocyanato, hydroxyl, mercapto, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 alkylthio, C 1 -C 6 6 alkylsulfinyl, or C 1 -C 6 alkylsulfonyl {However, the last six substituents may be substituted and / or functionalized}; phenyl, phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl {However Wherein the last 5 substituents represent optionally substituted ；; Z is an unsubstituted or substituted 4-membered unsaturated chain, consisting of 3 carbons and 1 nitrogen, partially or fully saturated Represents a chain; Q represents an unsubstituted or substituted cyclohexane-1,3-dione ring bonded at the 2-position. ] The heteroaroyl derivative represented by these, and its agriculturally useful salt. A process for the production of these pyridine derivatives, the use of these derivatives or compositions containing them for controlling undesired plant growth. |