发明授权
- 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
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申请号: US41270173申请日: 1973-11-05
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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
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.