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    Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compounds
    2.
    发明授权
    Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compounds 失效
    用硫化合物和磷化合物生产4,6-二氯嘧啶的方法

    公开(公告)号：US06525198B1

    公开(公告)日：2003-02-25

    申请号：US10069089

    申请日：2002-02-07

    申请人： Franz-Josef Mais ,  Alexander Klausener ,  Günther Cramm ,  Guido Steffan

    发明人： Franz-Josef Mais ,  Alexander Klausener ,  Günther Cramm ,  Guido Steffan

    IPC分类号： C07D23930

    CPC分类号： C07D239/30

    摘要： The invention relates to a method for the preparation of 4,6-dichloropyrimidine by reacting 4-chloro-6-methoxypyrimidine with at least one sulphur-containing chlorinating agent selected from the group consisting of SCl2, SOCl2, and SO2Cl2 in the presence of at least one phosphorus compound having the formula R3P═Yn  (1), in which R represents C1-C10-alkyl or C6-C10-aryl, each of which may optionally be substituted by up to five identical or different substituents selected from the group consisting of fluorine, chlorine, bromine, C1-C4-alkyl, and C1-C4-alkoxy, Y represents oxygen or sulphur, and n represents zero or 1.

    摘要翻译： 本发明涉及通过使4-氯-6-甲氧基嘧啶与至少一种选自SCl 2，SOCl 2和SO 2 Cl 2的含硫氯化剂在存在下进行反应来制备4,6-二氯嘧啶的方法 至少一种具有式（I）的磷化合物，其中R表示C 1 -C 10 - 烷基或C 6 -C 10 - 芳基，其各自可任选被至多五个相同或不同的选自氟，氯，溴，C1- C 4 - 烷基和C 1 -C 4 - 烷氧基，Y表示氧或硫，并且n表示0或1。