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。