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    • 9. 发明授权
    • Pyridine derivatives and their use for controlling undesirable plant
growth
    • 吡啶衍生物及其用于控制​​不希望的植物生长的用途
    • US5262387A
    • 1993-11-16
    • US783310
    • 1991-11-20
    • Gerhard HamprechtNorbert GoetzBruno WuerzerKarl-Otto Westphalen
    • Gerhard HamprechtNorbert GoetzBruno WuerzerKarl-Otto Westphalen
    • A01N43/40A01N43/90C07D213/81C07D213/82C07D471/04
    • C07D213/81A01N43/40A01N43/90C07D213/82C07D471/04
    • Pyridine derivatives of the formulae ##STR1## wherein W, X, Y and Z are each C--R.sup.4, N or N.fwdarw.O, with the proviso that the ring contains only one heteroatom, and the substituents R.sup.1, R.sup.2 and R.sup.3 have the following meanings:R.sup.1 is alkoxy, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, or substituted or unsubstituted alkynyl,R.sup.2 is hydrogen,R.sup.3 is formyl, 4,5-dihydrooxazol-2-yl or --CO--A--R.sup.5 or --CO--NR.sup.6.sup.R.sup.7, whereR.sup.4 is halogen, nitro, cyano, substituted or unsubstituted alkyl, substituted or unsubstituted benzyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, alkoxy, alkylthio, haloalkoxy, haloalkylthio, alkenyloxy, alkynyloxy, alkylsulfinyl, alkylsulfonyl, haloalkylsulfonyl, substituted or unsubstituted phenoxy or phenylthio, a substituted or unsubstituted 5- or 6-membered heterocyclic radical having one or two heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, or is substituted or unsubstituted phenyl,A is oxygen or sulfur,R.sup.5 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted benzyl, cycloalkyl, substituted or unsubstituted phenyl,one equivalent of a cation or the radical --N.dbd.CR.sup.8 R.sup.9 andR.sup.6 and R.sup.7 are hydrogen or alkyl or together denote a methylene chain having 4 or 5 members,their agriculturally utilizable salts, and their use for controlling unwanted plant growth.
    • 其中W,X,Y和Z各自为C-R 4,N或N-> O的吡啶衍生物,条件是环仅含有一个杂原子,并且取代基R 1,R 2和 R3具有以下含义:R 1是烷氧基,取代或未取代的烷基,取代或未取代的环烷基,取代或未取代的烯基,或取代或未取代的炔基,R 2是氢,R 3是甲酰基,4,5-二氢恶唑-2-基或 - CO-A-R5或-CO-NR6R7,其中R4是卤素,硝基,氰基,取代或未取代的烷基,取代或未取代的苄基,取代或未取代的环烷基,取代或未取代的烯基,取代或未取代的炔基,烷氧基,烷硫基,卤代烷氧基 卤代烷硫基,烯氧基,炔氧基,烷基亚磺酰基,烷基磺酰基,卤代烷基磺酰基,取代或未取代的苯氧基或苯硫基,取代或未取代的具有一个或两个选自基团的杂原子的5-或6-元杂环基 氧,硫和氮的取代基,或者是取代或未取代的苯基,A是氧或硫,R5是氢,取代或未取代的烷基,取代或未取代的苄基,环烷基,取代或未取代的苯基,1当量的阳离子或基团 -N = CR8R9,R6和R7是氢或烷基或一起表示具有4或5个成员的亚甲基链,它们的农业上可利用的盐,以及它们用于控制不想要的植物生长的用途。