发明授权
US3882140A Salts of 2,4,5-trisubstituted imidazoles and their preparation 失效
2,4,5-三取代咪唑的盐及其制备

  • 专利标题: Salts of 2,4,5-trisubstituted imidazoles and their preparation
  • 专利标题(中): 2,4,5-三取代咪唑的盐及其制备
  • 申请号: US41270173
    申请日: 1973-11-05
  • 公开(公告)号: US3882140A
    公开(公告)日: 1975-05-06
  • 发明人: WEBSTER OWEN WRIGHT
  • 申请人: DU PONT
  • 专利权人: Du Pont
  • 当前专利权人: Du Pont
  • 优先权: US41270173 1973-11-05; US24219972 1972-04-07
  • 主分类号: C07D233/90
  • IPC分类号: C07D233/90 C07D49/36
Salts of 2,4,5-trisubstituted imidazoles and their preparation
摘要:
Pyrolysis of 2-diazo-4,5-dicyano-2H-imidazole in the presence of certain halohydrocarbons yields 1-hydrocarbon substituted-2-halo4,5-dicyanoimidazoles. Pyrolysis of the same starting material in the presence of hydrocarbons, certain other halohydrocarbons, or certain Group I metal salts, yields 2-substituted-4,5-dicyanoimidazoles.
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