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    PROCESS FOR PREPARING SACCHARINE
    4.
    发明专利
    PROCESS FOR PREPARING SACCHARINE 未知

    公开(公告)号：HU183697B

    公开(公告)日：1984-05-28

    申请号：HU349481

    申请日：1981-11-23

    Applicant: BASF AG

    Inventor： TONNE PETER ,  JAEDICKE HAGEN

    IPC: C07D275/06 ,  C07D257/06

    Abstract: A process for the preparation of saccharin by reacting an aqueous hydrochloric acid solution of o-methoxycarbonylbenzenediazonium chloride with sulfur dioxide, wherein (a) the aqueous diazonium salt solution is reacted with sulfur dioxide at from 0 DEG to 100 DEG C. in the presence of a water-immiscible or only partially water-miscible inert organic solvent, (b) in order to decompose the diazonium salt, the reaction mixture is treated simultaneously or subsequently with a diazonium salt decomposition catalyst, (c) the aqueous organic reaction mixture, or the organic phase obtained after removing the aqueous phase, is treated with an oxidizing agent at from 0 DEG to 100 DEG C.

    PROCESS FOR PREPARING 1,2-BENZISOTHIAZOLONE DERIVATIVES
    5.
    发明专利
    PROCESS FOR PREPARING 1,2-BENZISOTHIAZOLONE DERIVATIVES 未知

    公开(公告)号：HUT39735A

    公开(公告)日：1986-10-29

    申请号：HU8686

    申请日：1986-01-09

    Applicant: BASF AG

    Inventor： TONNE PETER ,  JAEDICKE HAGEN

    IPC: C07D275/04 ,  C07D277/66

    Abstract: 1,2-Benzisothiazolones and their alkali metal salts are prepared by reacting 2,2'-dithiodibenzamides in the presence of oxygen or oxygen donors in an aqueous alkaline medium to which a water-soluble organic solvent may be added and, if desired, freeing the benzisothiazolones from the alkali metal salts with acid.

    PREPARATION OF AROMATIC SULFOHALIDES
    6.
    发明专利
    PREPARATION OF AROMATIC SULFOHALIDES 未知

    公开(公告)号：CA1177848A

    公开(公告)日：1984-11-13

    申请号：CA390258

    申请日：1981-11-17

    Applicant: BASF AG

    Inventor： TONNE PETER ,  JAEDICKE HAGEN

    IPC: C07B61/00 ,  B01J27/00 ,  B01J27/10 ,  B01J31/00 ,  B01J31/02 ,  C07C67/00 ,  C07C301/00 ,  C07C303/02 ,  C07C309/86 ,  C07D215/36 ,  C07C143/70

    Abstract: A process for the preparation of aromatic sulfohalides by reacting an aqueous solution t containing a hydrogen halide, of an aromatic diazonium halide with sulfur dioxide, wherein a) the aqueous solution, containing the hydrogen halide, of a diazonium salt which is derived from the corresponding aromatic amine and the halogen of the desired sulfohalide is reacted with sulfur dioxide in the presence of an organic solvent which is immiscible or only partially miscible with water, is substantially inert to aqueous acids and SO2 and has adequate solvent power for SO2 and for the sulphochloride formed, b) the diazonium salt is decomposed, simultaneously or subsequently, by means of a catalyst for diazonium salt decomposition and c) the resulting reaction mixture, or the organic phase thereof after removal of the aqueous phase, is treated with an oxidizing agent.

    7.
    发明专利
    未知

    公开(公告)号：MX5762E

    公开(公告)日：1984-06-28

    申请号：MX976581

    申请日：1981-11-17

    Applicant: BASF AG

    Inventor： TONNE PETER ,  JAEDICKE HAGEN

    IPC: C07D275/06

    Abstract: A process for the preparation of saccharin by reacting an aqueous hydrochloric acid solution of o-methoxycarbonylbenzenediazonium chloride with sulfur dioxide, wherein (a) the aqueous diazonium salt solution is reacted with sulfur dioxide at from 0 DEG to 100 DEG C. in the presence of a water-immiscible or only partially water-miscible inert organic solvent, (b) in order to decompose the diazonium salt, the reaction mixture is treated simultaneously or subsequently with a diazonium salt decomposition catalyst, (c) the aqueous organic reaction mixture, or the organic phase obtained after removing the aqueous phase, is treated with an oxidizing agent at from 0 DEG to 100 DEG C.

    8.
    发明专利
    未知

    公开(公告)号：DK24083A

    公开(公告)日：1983-07-23

    申请号：DK24083

    申请日：1983-01-21

    Applicant: BASF AG

    Inventor： JAEDICKE HAGEN ,  TONNE PETER

    IPC: C07C319/14 ,  C07C20060101 ,  C07C67/00 ,  C07C313/00 ,  C07C319/24 ,  C07C323/62 ,  C07C323/66 ,  C07C

    Abstract: o,o'-Dithiodibenzoic acids are prepared by a process wherein a diazotized anthranilic acid or anthranilate is reacted with sulfur dioxide in the presence of an acid, water and a copper salt, and if desired in the presence of an alkali metal iodide, in a 1st stage at from 20 DEG to 50 DEG C. and then in a 2nd stage at from 80 DEG to 100 DEG C. The o,o'-dithiodibenzoic acids obtainable by the process of the invention are useful starting materials for the preparation of crop protection agents, dyes and drugs.

    PROCESS FOR PRODUCTION OF 1,2-BENSIZTIASOLONES
    10.
    发明专利
    PROCESS FOR PRODUCTION OF 1,2-BENSIZTIASOLONES 未知

    公开(公告)号：HU198029B

    公开(公告)日：1989-07-28

    申请号：HU8686

    申请日：1986-01-09

    Applicant: BASF AG

    Inventor： TONNE PETER ,  JAEDICKE HAGEN

    IPC: C07D275/04

    Abstract: 1,2-Benzisothiazolones and their alkali metal salts are prepared by reacting 2,2'-dithiodibenzamides in the presence of oxygen or oxygen donors in an aqueous alkaline medium to which a water-soluble organic solvent may be added and, if desired, freeing the benzisothiazolones from the alkali metal salts with acid.

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