Cyanobenzenesulfenyl halide and process for preparation of 3-substituted benzisothiazole using it
申请人:SUMITOMO SEIKA CHEMICALS CO., LTD.
公开号:EP0741129A2
公开(公告)日:1996-11-06
A 2-cyanobenzenesulphenyl compound is represented by the general formula (I):
wherein X represents Cl or Br and can be used for the preparation of 3-substituted benzisothiazole by reaction of the compound (I) with a piperazine compound. The compound (I) can be prepared by halogenating a 2-cyanophenylthio derivative of the formula (II):
wherein R represents H, alkali metal, 2-cyanophenylthio or C1-4 alkyl.
一种 2-氰基苯基联苯化合物由通式 (I) 表示:
其中 X 代表 Cl 或 Br,可用于通过化合物(I)与哌嗪化合物反应制备 3-取代的苯并异噻唑。化合物 (I) 可以通过卤化式 (II) 的 2-氰基苯硫基衍生物来制备:
其中 R 代表 H、碱金属、2-氰基苯硫基或 C1-4 烷基。