发明授权
- 专利标题： Process for producing 2-alkyl-4-halo-5-formylimidazoles
- 专利标题（中）： 2-烷基-4-卤代-5-甲酰基咪唑的制备方法
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申请号： US999134申请日： 1992-12-31
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公开(公告)号： US5319094A公开(公告)日： 1994-06-07
- 发明人: Takehiko Kakimoto , Toshimi Ogawa
- 申请人： Takehiko Kakimoto , Toshimi Ogawa
- 申请人地址： JPX Osaka
- 专利权人： Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人： Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX3-187117 19910423
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07D233/64 ; C07D233/68
摘要：
This invention provides a process for producing 2-alkyl-4-halo-5-formylimidazoles which includes halogenating 2-alkyl-5-formylimidazoles with a N-halosuccinimides in the presence of dioxane or mixture of dioxane and ethylene glycol monomethylether as solvent and in the presence of alkali metal hydrogen carbonate as catalyst, which are readily available, with good yield.
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