Nitro-diphenyl ethers
    5.
    发明授权
    Nitro-diphenyl ethers 失效
    硝基二苯醚

    公开(公告)号:US4062896A

    公开(公告)日:1977-12-13

    申请号:US515316

    申请日:1974-10-16

    CPC分类号: C07C205/38

    摘要: Nitrodiphenyl ether derivatives of the general formula: ##STR1## wherein X stands for Cl, F, CH.sub.3 or CF.sub.3, n is an integer of 1-3 with the proviso that X may be the same or different when n is 2 or 3 but X.sub.n should not be 2,4-dichloro substituent,Are valuable as herbicides possessing an excellent herbicidal activity to a wide variety of undesirable weeds with an extremely low toxicity to useful crops. These nitrodiphenyl ether derivatives are prepared by hydroxyethylation of a compound of the above general formula except that a halogen atom is present in place of nitro group and subsequent halogenation of the .beta.-hydroxyethoxy group of the resulting compound.

    摘要翻译: 硝基二苯醚衍生物,其通式如下:其中X代表Cl,F,CH3或CF3,n为1-3的整数,条件是当n为2或3时X可以相同或不同,但Xn 不应该是2,4-二氯取代基,作为除草剂可以作为除草剂具有优异的除草剂活性,适用于具有非常低的毒性的无毒可食用的有用的作物。 这些硝基二苯醚衍生物通过上述通式的化合物的羟乙基化制备,除了卤素原子代替硝基,随后卤化所得化合物的β-羟基乙氧基。

    Diphenyl ethers
    8.
    发明授权
    Diphenyl ethers 失效
    二苯醚

    公开(公告)号:US4385189A

    公开(公告)日:1983-05-24

    申请号:US227667

    申请日:1981-01-23

    摘要: Novel diphenyl ether compounds of the general formula: ##STR1## wherein X represents a hydrogen atom or a nitro group, process for preparing the same and diphenyl ethers of the general formula: ##STR2## wherein R represents a hydrogen atom, or substituted or unsubstituted alkyl group, alkenyl group or alkynyl group, and Y represents an oxygen atom, a sulfur atom, or the group ##STR3## wherein R' is defined as R above by reacting 2-chloro-4-trifluoromethylphenyl-3,4-dinitrophenyl ether with a compound of the general formula:RYH (III)wherein R and Y have the same meanings as defined above, respectively. The latter diphenyl ether compounds of the general formula (II) are useful as herbicides.

    摘要翻译: 新的二苯醚化合物,其通式如下:其中X代表氢原子或硝基,其中X代表氢原子或硝基,其制备方法和通式如下的二苯醚:其中R代表氢 原子或取代或未取代的烷基,烯基或炔基,Y表示氧原子,硫原子或基团,其中R'定义为上述R,2-氯-4-三氟甲基苯基 - 3,4-二硝基苯基醚与下列通式的化合物RYH(III),其中R和Y分别具有与上述相同的含义。 后一种通式(II)的二苯醚化合物可用作除草剂。