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    Process for producing 2-alkyl-4-halo-5-formylimidazoles
    1.
    发明授权
    Process for producing 2-alkyl-4-halo-5-formylimidazoles 失效
    2-烷基-4-卤代-5-甲酰基咪唑的制备方法

    公开(公告)号：US5319094A

    公开(公告)日：1994-06-07

    申请号：US999134

    申请日：1992-12-31

    申请人： Takehiko Kakimoto ,  Toshimi Ogawa

    发明人： Takehiko Kakimoto ,  Toshimi Ogawa

    IPC分类号： B01J31/02 ,  C07B61/00 ,  C07D233/64 ,  C07D233/68

    CPC分类号： 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.

    摘要翻译： 本发明提供了2-烷基-4-卤代-5-甲酰基咪唑的制备方法，其包括在二恶烷或二恶烷和乙二醇单甲醚的混合物作为溶剂的存在下将N-卤代琥珀酰亚胺卤化为2-烷基-5-甲酰基咪唑， 碱金属碳酸氢盐作为催化剂的存在，其容易获得，产率良好。

    Process for production of 2-substituted-4-hydromethylimidazole compounds
    2.
    发明授权
    Process for production of 2-substituted-4-hydromethylimidazole compounds 失效
    2-取代-4-羟基乙基咪唑化合物的制备方法

    公开(公告)号：US5266704A

    公开(公告)日：1993-11-30

    申请号：US940380

    申请日：1992-09-03

    申请人： Takehiko Kakimoto ,  Toshima Ogawa

    发明人： Takehiko Kakimoto ,  Toshima Ogawa

    IPC分类号： C07D233/64 ,  C07D233/54 ,  C07D233/60

    CPC分类号： C07D233/64

    摘要： The invention provides a process for producing a 2-substituted-4-hydroxymethylimidazole easily and in good yield by means of simple equipment. This process comprises reacting hydroxymethylglyoxal, a monoaldehyde and ammonia in a sequence such that said monoaldehyde and ammonia are first reacted with each other and hydroxymethylglyoxal is then introduced into the reaction system for further reaction.

    摘要翻译： 本发明提供了通过简单的设备容易且以良好的产率制备2-取代-4-羟甲基咪唑的方法。 该方法包括使羟甲基乙二醛，单醛和氨按照使得所述单醛和氨首先反应的顺序反应，然后将羟甲基乙二醛引入反应体系进一步反应。