Method for controlling harmful plants in rice with
2-benzoyl-1,3-cyclohexanedione derivatives
    115.
    发明授权
    Method for controlling harmful plants in rice with 2-benzoyl-1,3-cyclohexanedione derivatives 失效
    用2-苯甲酰基-1,3-环己二酮衍生物控制水稻有害植物的方法

    公开(公告)号:US5318947A

    公开(公告)日:1994-06-07

    申请号:US856170

    申请日:1992-06-09

    CPC classification number: A01N41/10 A01N35/06

    Abstract: Compounds of the formula I ##STR1## where R.sup.1 to R.sup.9 are as defined in claim 1 are known as herbicides. When these compounds are applied in traditionally used amounts, this often results in damage to crop plants in the crops, when it is desired to achieve sufficient action against weeds typically occurring therein. However, according to the invention it is possible to reduce the application rates to 0.001 to 0.5 kg of a.i./ha in rice growing, and the action obtained against important harmful plants in rice from the species Sagittaria, Cyperus and Scirpus Eleocharis is nevertheless sufficient.

    Abstract translation: PCT No.PCT / EP90 / 01721 Sec。 371日期:1992年6月9日 102(e)日期1992年6月9日PCT提交1990年10月12日PCT公布。 出版物WO91 / 05470 日本1991年5月2日。式I的化合物(I)其中R1至R9如权利要求1中所定义,作为除草剂是已知的。 当这些化合物以传统使用的量施用时,当期望通过其中通常发生的杂草达到足够的作用时,这通常导致作物对作物的损害。 然而,根据本发明,可以将水稻种植中的施用率降低至0.001至0.5kg的a.i./ha,而对于来自S the属(Sagittaria),莎草(Scperus)和Ele the属(Scirpus Eleocharis)的水稻中重要的有害植物所获得的作用仍然足够。

    Process for the preparation of pyrimidines
    119.
    发明授权
    Process for the preparation of pyrimidines 失效
    制备嘧啶的方法

    公开(公告)号:US4824949A

    公开(公告)日:1989-04-25

    申请号:US132483

    申请日:1987-12-14

    CPC classification number: C07D239/56 C07D239/52 C07D239/58

    Abstract: Process for the preparation of pyrimidines Pyrimidines of the formula I ##STR1## in which X and Y, independently of one another, denote oxygen or sulfur, R.sup.1 and R.sup.2, independently of one another, denote (C.sub.1 --C.sub.4) alkyl, (C.sub.1 --C.sub.4 -alkoxy)-C.sub.1 --C.sub.2 -alkyl or halo-C.sub.1 --C.sub.4 -alkyl, and R.sup.3 denotes C.sub.1 --C.sub.4 -alkyl, phenyl or phenoxy which may both be substituted by one, two or three radicals from the series comprising halogen, C.sub.1 --C.sub.4 -alkoxy and C.sub.1 --C.sub.4 -alkyl radicals, halo-C.sub.1 --C.sub.4 -alkyl or C.sub.1 --C.sub.4 -alkoxy, are obtained in a process in which propanediimidates of the formula II ##STR2## or salt thereof, are reacted with N-cyanoamides of the formula NC--NR.sup.4 --CO--R.sup.3 in which R.sup.4 denotes hydrogen or a cation, in an inert solvent. The compounds of the formula I are suitable as intermediates for the preparation of herbicidal sulfonylureas.

    Abstract translation: 制备嘧啶的方法式I的嘧啶其中X和Y彼此独立地表示氧或硫,R 1和R 2彼此独立地表示(C 1 -C 4)烷基,(C 1 -C 4)烷基 -C 1-4 - 烷氧基)-C 1 -C 2 - 烷基或卤代C 1 -C 4 - 烷基,R 3表示可以被一个,两个或三个基团取代的C 1 -C 4烷基,苯基或苯氧基,所述基团包括卤素, C 1 -C 4 - 烷氧基和C 1 -C 4 - 烷基,卤代-C 1 -C 4 - 烷基或C 1 -C 4 - 烷氧基是在下式的过程中获得的:其中式II II或其盐的丙二酰亚胺酯或其盐与 在惰性溶剂中,其中R 4表示氢或阳离子的式NC-NR4-CO-R3的N-氰酰胺。 式I的化合物适用作制备除草磺酰脲类的中间体。

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