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134 条记录 (耗时 0.028 秒)

    3,4,-dihydro-2H-pyrans
    15.
    发明授权
    3,4,-dihydro-2H-pyrans 失效
    3,4， - 二氢-2H-吡喃

    公开(公告)号：US4845247A

    公开(公告)日：1989-07-04

    申请号：US76612

    申请日：1987-07-23

    申请人： Wolfgang Spiegler ,  Norbert Goetz ,  Manfred Sauerwald ,  Toni Dockner ,  Rolf Fischer

    发明人： Wolfgang Spiegler ,  Norbert Goetz ,  Manfred Sauerwald ,  Toni Dockner ,  Rolf Fischer

    IPC分类号： C07D309/22 ,  C07D309/28 ,  C07D309/32

    CPC分类号： C07D309/32 ,  C07D309/22 ,  C07D309/28

    摘要： 3,4-dihydro-2H-pyrans I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each H or C.sub.1 -C.sub.6 -alkyl and R.sup.3 is not C.sub.2 -C.sub.4 -alkyl when A is COOR.sup.5 and A is COOR.sup.5, .dbd.CHOR.sup.5, in which R.sup.5 is C.sub.1 -C.sub.4 -alkyl, or CH.sub.2 OR.sup.6, in which R.sup.6 is C.sub.1 -C.sub.4 -alkyl or is benzyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, alkoxy or halogen, or is formyl, C.sub.2 -C.sub.4 -alkylcarbonyl or benzoyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, alkoxy or halogen, are prepared by eliminating an alcohol from a 2-alkoxytetrahydropyran II ##STR2## where R.sup.7 is C.sub.1 -C.sub.18 -alkyl and A' is COOR.sup.5, CH(OR.sup.5).sub.2 or CH.sub.2 OR.sup.6, in which R.sup.5 and R.sup.6 have the meanings stated for I, the elimination being carried out by passing II, in the liquid or gaseous state, into a high boiling mineral oil at above the boiling point of the resulting dihydropyran I, removing I in gaseous form, replenishisng the high boiling mineral oil when it becomes enriched with byproducts, and removing the said mineral oil enriched with byproducts.

    摘要翻译： 3,4-二氢-2H-吡喃酮其中R 1，R 2，R 3和R 4各自是H或C 1 -C 6烷基，当A是COOR 5 + L时，R 3不是C 2 -C 4 - 烷基，A是 COOR 5 = CHOR 5，其中R 5是C 1 -C 4 - 烷基或CH 2 OR 6，其中R 6是C 1 -C 4烷基或是未被取代或被C 1 -C 4 - 烷基，烷氧基或卤素取代的苄基，或是甲酰基， 未取代或被C 1 -C 4 - 烷基，烷氧基或卤素取代的C 2 -C 4 - 烷基羰基或苯甲酰基通过从2-烷氧基四氢吡喃II中除去醇来制备，其中R 7是C 1 -C 18烷基和A' 是COOR 5，CH（OR 5）2或CH 2 OR 6，其中R 5和R 6具有I所述的含义，通过使II在液体或气态下进行的消除在高于沸点的高沸点矿物油中进行 的所得二氢吡喃I，除去气体形式的I，当富含副产物时补充高沸点矿物油，并除去富含副产物的所述矿物油。

    Pyridine derivatives and their use for controlling undesirable plant growth
    17.
    发明授权
    Pyridine derivatives and their use for controlling undesirable plant growth 失效
    吡啶衍生物及其用于控制​​不希望的植物生长的用途

    公开(公告)号：US5262387A

    公开(公告)日：1993-11-16

    申请号：US783310

    申请日：1991-11-20

    申请人： Gerhard Hamprecht ,  Norbert Goetz ,  Bruno Wuerzer ,  Karl-Otto Westphalen

    发明人： Gerhard Hamprecht ,  Norbert Goetz ,  Bruno Wuerzer ,  Karl-Otto Westphalen

    IPC分类号： A01N43/40 ,  A01N43/90 ,  C07D213/81 ,  C07D213/82 ,  C07D471/04

    CPC分类号： C07D213/81 ,  A01N43/40 ,  A01N43/90 ,  C07D213/82 ,  C07D471/04

    摘要： 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.

    摘要翻译： 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。