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    62.
    发明专利
    未知

    公开(公告)号：DK330582A

    公开(公告)日：1983-01-26

    申请号：DK330582

    申请日：1982-07-23

    Applicant: BASF AG

    Inventor： EICKEN K ,  PLATH P ,  WUERZER B

    IPC: A01N43/56 ,  C07D231/38 ,  C07D

    Abstract: 5-Amino-1-phenyl-pyrazole-4-carboxylic acid derivatives of the formula where R1, R2, R3 and A have the meanings given in the description, are used for controlling undesirable plant growth.

    PROCESS FOR OBTAINING PYRRAZOLE COMPOUNDS OF VERY HIGH PURITY
    63.
    发明专利
    PROCESS FOR OBTAINING PYRRAZOLE COMPOUNDS OF VERY HIGH PURITY 未知

    公开(公告)号：YU279479A

    公开(公告)日：1983-01-21

    申请号：YU279479

    申请日：1979-11-14

    Applicant: BASF AG

    Inventor： LINART F ,  EICKEN K ,  GIRGENSOHN B ,  RICHARZ W

    IPC: C07D231/12 ,  C07D231/14 ,  C07D231/18 ,  C07D231/20 ,  C07D521/00 ,  C07D231/22

    Abstract: 1. A process for the preparation of substantially pure pyrazole compounds of the general formula see diagramm : EP0012216,P9,F1 where R is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**1 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**2 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, or R**2 together with R is an ortholinked alkylene chain of up to 6 carbon atoms which is unsubstituted or substituted by alkyl of up to 4 carbon atoms, X is chlorine or bromine, and R**3 and R**4 are identical or different and each is hydrogen, alkyl, alkoxy, alkylthio, carbalkoxy or perfluoroalkyl, in each case of up to 4 carbon atoms, or halogen, phenyl, cyano or carboxyl, from the corresponding crude products, characterized in that the crude products are treated with 30 to 90% by weight aqueous solutions of strong acids, thereafter the aqueous solution is separated off and diluted with water, and the pure product which hereupon precipitates is separated from the aqueous fluid.

    PREPARATION OF SUBSTANTIALLY PURE PYRAZOLE COMPOUNDS
    69.
    发明专利
    PREPARATION OF SUBSTANTIALLY PURE PYRAZOLE COMPOUNDS 未知

    公开(公告)号：ZA796137B

    公开(公告)日：1980-11-26

    申请号：ZA796137

    申请日：1979-11-14

    Applicant: BASF AG

    Inventor： LINHART F ,  GIRGENSOHN B ,  RICHARZ W ,  EICKEN K

    IPC: C07D231/12 ,  C07D231/14 ,  C07D231/18 ,  C07D231/20 ,  C07D521/00 ,  C07D

    Abstract: 1. A process for the preparation of substantially pure pyrazole compounds of the general formula see diagramm : EP0012216,P9,F1 where R is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**1 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**2 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, or R**2 together with R is an ortholinked alkylene chain of up to 6 carbon atoms which is unsubstituted or substituted by alkyl of up to 4 carbon atoms, X is chlorine or bromine, and R**3 and R**4 are identical or different and each is hydrogen, alkyl, alkoxy, alkylthio, carbalkoxy or perfluoroalkyl, in each case of up to 4 carbon atoms, or halogen, phenyl, cyano or carboxyl, from the corresponding crude products, characterized in that the crude products are treated with 30 to 90% by weight aqueous solutions of strong acids, thereafter the aqueous solution is separated off and diluted with water, and the pure product which hereupon precipitates is separated from the aqueous fluid.

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