38.
    发明专利
    未知

    公开(公告)号:DK131460B

    公开(公告)日:1975-07-21

    申请号:DK417571

    申请日:1971-08-25

    Applicant: HOECHST AG

    Abstract: 1347076 Halocarboxylic acid anilides FARBWERKE HOECHST AG 18 Aug 1971 [26 Aug 1970] 38759/71 Heading C2C [Also in Division A5] The invention comprises halocarboxylic acid anilides of the formula wherein X 1 and X 2 each represents F, Cl or Br; X 3 represents H, Cl, F, Br or the group CHCl 2 ; Hal represents indentical or different halogen atoms, n 1 is 0, 1, 2 or 3, n 2 is 0, 1, or 2, n 3 is 0, 1 or 2 and the sum of n 1 +n 2 +n 3 is an integer from HO 4 . They may be obtained by reacting an appropriately substituted aniline (a) with a corresponding halocarboxylic acid halide in the presence of a tertiary base or (b) in the presence of H 2 SO 4 with a corresponding halocarboxylic anhydride or halocarboxylic acid. Compounds containing a nitro group may be obtained by nitrating the corresponding non-nitro-substituted compound with KNO 3 or HNO 3 in H 2 SO 4 . Examples are given for the production of the compounds. They are useful as herbicides for combating unwanted plant growth and as such may be used in conjunction with a carrier, other herbicides or fertilizers.

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