A PROCESS FOR THE PREPARATION OF CYCLOPROPANE CARBOXYLIC ACIDS
    7.
    发明公开
    A PROCESS FOR THE PREPARATION OF CYCLOPROPANE CARBOXYLIC ACIDS 有权
    PRODUCING环丙烷酸的方法

    公开(公告)号:EP1056709A1

    公开(公告)日:2000-12-06

    申请号:EP99903593.4

    申请日:1999-02-15

    IPC分类号: C07C61/35

    CPC分类号: C07C51/377 C07C61/35

    摘要: Preparation of cyclopropane carboxylic acids usable as intermediates and of formula (II), wherein R1 represents halogen, preferably Cl or Br, or haloalkyl, preferably CF3, and X2 represents halogen, preferably Cl or Br, where R1 and X2 may be the same or different, and wherein the configuration of (II) is predominantly Z for R1 = CF3 and X2 = Cl; by reacting, in the presence of a catalyst, a compound of formula (I), wherein R1 and X2 are as defined, and X1 represents halogen, preferably Cl or Br, where R1, X1 and X2 may be the same or different, with a compound which is a hydrogen donor.