VERFAHREN ZUR HERSTELLUNG VON THIOCHLORFORMIATEN

    公开(公告)号:EP1007510A1

    公开(公告)日:2000-06-14

    申请号:EP98948890.3

    申请日:1998-08-28

    CPC classification number: C07C329/02

    Abstract: The invention relates to a method for producing thiochloroformates by reacting thiols with phosgene in the presence of a catalyst. According to the inventive method, the catalyst used is a urea or cyclic thio-urea which can exist in the form of salts obtained by reaction with halogen acids or phosgene.

    Abstract translation: 本发明涉及通过硫醇与光气在催化剂存在下反应制备硫代氯甲酸酯的方法。 根据本发明的方法,使用的催化剂是脲或环状硫代脲,其可以以与卤素酸或光气反应获得的盐的形式存在。

    VERFAHREN ZUR REINIGUNG VON CARBONSÄURECHLORIDEN
    32.
    发明授权
    VERFAHREN ZUR REINIGUNG VON CARBONSÄURECHLORIDEN 有权
    清理方法碳酰氯

    公开(公告)号:EP1212273B1

    公开(公告)日:2005-02-02

    申请号:EP00972657.1

    申请日:2000-08-31

    CPC classification number: C07C51/64 C07C53/42

    Abstract: The invention relates to a method for purifying acid chlorides which have been produced by converting carboxylic acids with carbon oxychloride or thionyl chloride in the presence of a catalyst adduct. The acid chlorides are treated with a hydro halide of carboxylic acid amides of general formula (I), wherein R1 stands for hydrogen or C¿1?- to C3-alkyl; R?2 and R3¿, independently from one another, mean C¿1?- to C4-alkyl or R?2 and R3¿ together mean a C¿4?- or C5-alkylene chain. The thus purified acid chloride is isolated by separation said acid chloride from the carboxylic acid amide hydro halide-phase.

Patent Agency Ranking