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    • 2. 发明公开
    • VERFAHREN ZUR HERSTELLUNG VON CHLORCARBONSÄURECHLORIDEN
    • VERFAHREN ZUR HERSTELLUNG VONCHLORCARBONSÄURECHLORIDEN
    • EP1259473A1
    • 2002-11-27
    • EP01919355.6
    • 2001-02-28
    • BASF AKTIENGESELLSCHAFT
    • STAMM, ArminKNEUPER, Heinz-JosefHENKELMANN, JochemWEBER, TheodorBUSCH, Ralph
    • C07C51/60C07C53/50
    • C07C51/60C07C53/50
    • The invention relates to a method for producing chlorocarboxylic acid chlorides of formula (I), wherein R?1 and R2¿, independently from one another, mean a hydrogen atom, an organic radical containing carbon, a halogen, a nitro or cyano group and Y means an alkylene chain having 1 to 10 carbon atoms in the chain which is unsubstituted or is substituted by organic radicals that contain carbon, by halogen, nitro and/or cyano groups, whereby the alkylene chain can be interrupted by an ether-, thioether-, tertiary amino- or keto group, whereby the organic radicals of Y and/or R1 and/or R2 can be connected to one another and thereby form a non-aromatic system, whereby said radicals contain carbon, by converting a lactone of formula (II), wherein R1, R2 and Y have the aforementioned meanings, using a hydrogen chloride and phosgene in the presence of a catalyst. Hydrogen chloride is added before and/or while phosgene is added. The hydrogen chloride is only introduced at a temperature of at least 60 °C. A pyridine compound is used as the catalyst.
    • 本发明涉及制备式(I)的氯代羧酸氯化物的方法,其中R 1和R 2彼此独立地表示氢原子,含碳的有机基团,卤素,硝基或氰基,和 Y表示在未被取代或被含有碳的有机基团取代的链中具有1至10个碳原子的亚烷基链,其通过卤素,硝基和/或氰基基团取代,其中亚烷基链可被醚 - ,硫醚 - 叔氨基或酮基,其中Y和/或R 1和/或R 2的有机基团可以彼此连接并由此形成非芳族体系,由此所述基团含有碳,通过将式 (II)的化合物,其中R1,R2和Y具有上述含义,在催化剂存在下使用氯化氢和光气。 氯化氢在加入光气之前和/或加入光气时加入。 氯化氢仅在至少60℃的温度下引入。 吡啶化合物用作催化剂。