发明授权
US4962199A Pyridazines by magnesium halide catalyzed cyclization 失效
哒嗪通过卤化镁催化环化

  • 专利标题: Pyridazines by magnesium halide catalyzed cyclization
  • 专利标题(中): 哒嗪通过卤化镁催化环化
  • 申请号: US473140
    申请日: 1990-02-01
  • 公开(公告)号: US4962199A
    公开(公告)日: 1990-10-09
  • 发明人: Gopi Yalamanchili
  • 申请人: Gopi Yalamanchili
  • 申请人地址: MO St. Louis
  • 专利权人: Monsanto Company
  • 当前专利权人: Monsanto Company
  • 当前专利权人地址: MO St. Louis
  • 主分类号: C07D237/24
  • IPC分类号: C07D237/24
Pyridazines by magnesium halide catalyzed cyclization
摘要:
The present invention relates to a process for making substituted 4-oxo-1,4-dihydropyridazines by reacting a 2-phenylhyrazono-3-oxoglutarate with an organic acid halide in the presence of magnesium halide.
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