Herbicidal tetrahydro(thio)pyran-2,4-dione derivatives
    6.
    发明授权
    Herbicidal tetrahydro(thio)pyran-2,4-dione derivatives 失效
    除草四氢(硫)吡喃-2,4-二酮衍生物

    公开(公告)号:US4842638A

    公开(公告)日:1989-06-27

    申请号:US142911

    申请日:1988-01-12

    摘要: Tetrahydro(thio)pyran-2,4-dione derivatives of the formula ##STR1## where R.sup.1 is hydrogen, a cation, alkylcarbonyl, C.sub.2 -C.sub.10 -alkenylcarbonyl, or benzoyl which is unsubstituted or substituted by alkyl, R.sup.2 is alkyl, R.sup.3 is a non-aromatic, unsubstituted or alkyl-substituted heterocyclic compound of 5 to 7 ring members and having at most one double bond in the heterocyclic ring, X is oxygen or sulfur, and Z is oxygen or the radical NO--R.sup.4, R.sup.4 denoting alkyl, alkenyl, alkynyl, haloalkyl, hal oalkenyl, alkoxyalkyl or the radical CH.sub.2 --R.sup.5, where R.sup.5 is a he terocyclic compound of 5 ring members and containing from 1 to 3 hetero-atoms and from 0 to 2 double bonds and bearing either no substituents or one or two substituents selected from the group consisting of alkyl, alkoxy, halogen, trifluoromethyl, alkoxymethyl, alkylthiomethyl and vinyl, or R.sup.5 is phenyl which is unsubstituted or bears from one to three substituents selected from the group consisting of alkyl, alkoxy, halogen, trifluoromethyl, nitro and dialkylamino, and their use for combating unwanted plant growth and for regulating plant growth.

    摘要翻译: 其中R 1是氢,阳离子,烷基羰基,C 2 -C 10 - 链烯基羰基或未被烷基取代的苯甲酰基的式(I)的四氢(硫代)吡喃-2,4-二酮衍生物, R 3为5〜7个环成员的非芳香族,未取代或烷基取代的杂环化合物,并且在杂环中至多有一个双键,X为氧或硫,Z为氧或自由基NO-R4, R4表示烷基,烯基,炔基,卤代烷基,卤代烯基,烷氧基烷基或自由基CH2-R5,其中R5是5个环成员的萜类化合物,并含有1至3个杂原子和0至2个双键和带有 无取代基或选自烷基,烷氧基,卤素,三氟甲基,烷氧基甲基,烷硫基甲基和乙烯基的一个或两个取代基,或R 5为未被取代的或具有一至三个选自下列基团的取代基的苯基:烷基, 烷氧基,卤素,三氟甲基,n itro和二烷基氨基,以及它们用于抵抗不想要的植物生长和调节植物生长的用途。