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    Tetraalkylfluoroformamidinium trifluoroacetate and preparation process of same
    6.
    发明授权
    Tetraalkylfluoroformamidinium trifluoroacetate and preparation process of same 失效
    三氟乙酸四烷基氟甲脒及其制备方法

    公开(公告)号：US06222046B1

    公开(公告)日：2001-04-24

    申请号：US09370213

    申请日：1999-08-09

    申请人： Hidetoshi Hayashi ,  Hiroshi Sonoda ,  Kenichi Goto ,  Kouki Fukumura ,  Junko Naruse ,  Teruyuki Nagata

    发明人： Hidetoshi Hayashi ,  Hiroshi Sonoda ,  Kenichi Goto ,  Kouki Fukumura ,  Junko Naruse ,  Teruyuki Nagata

    IPC分类号： C07D23902

    CPC分类号： C07D233/28 ,  C07C67/08 ,  Y02P20/582 ,  C07C69/63

    摘要： The invention has disclosed a trifluoroacetoxylation agent and a preparation process of the agent, which is safe and ease to handle, very useful in industry, and represented by the formula (1); wherein R1 to R4 are a substituted or unsubstituted, saturated or unsaturated alkyl group or a substituted or unsubstituted aryl group and can be the same or different, R1 and R2 or R3 and R4 can bond to form a ring containing a nitrogen atom or a nitrogen atom and other hetero atoms, and R1 and R3 can bond to form a ring containing a nitrogen atom or a nitrogen atom and other hetero atoms.

    摘要翻译： 本发明公开了一种三氯乙酰氧基化剂及其制备方法，其安全性和易于处理，在工业上非常有用，并且由式（1）表示：其中R 1至R 4为取代或未取代的饱和或不饱和的 烷基或取代或未取代的芳基并且可以相同或不同，R 1和R 2或R 3和R 4可以键合形成含有氮原子或氮原子和其它杂原子的环，并且R 1和R 3可键合到 形成含有氮原子或氮原子和其它杂原子的环。

    Process for preparing high-purity aniline
    9.
    发明授权
    Process for preparing high-purity aniline 失效
    制备高纯度苯胺的方法

    公开(公告)号：US5616806A

    公开(公告)日：1997-04-01

    申请号：US760771

    申请日：1991-09-17

    申请人： Teruyuki Nagata ,  Katsuji Watanabe ,  Yoshitsugu Kono ,  Akihiro Tamaki ,  Takashi Kobayashi

    发明人： Teruyuki Nagata ,  Katsuji Watanabe ,  Yoshitsugu Kono ,  Akihiro Tamaki ,  Takashi Kobayashi

    IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J31/28 ,  C07B61/00 ,  C07C209/32 ,  C07C209/36 ,  C07C211/46 ,  C07C209/22

    CPC分类号： C07C209/36

    摘要： A process for the continuous preparation of aniline by hydrogenating nitrobenzene with hydrogen is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, and carrying out reaction at a temperature of from 150.degree. to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less, wherein a zinc compound is added to the reaction system as a promotor and carbon monoxide is added to the hydrogen at a concentration of 1-500 ppm.

    摘要翻译： 公开了通过用氢气氢化硝基苯连续制备苯胺的方法，该方法包括以下步骤：在苯胺溶剂中悬浮钯或钯 - 铂的催化剂，所述催化剂沉积在具有至少100的吸油性的亲脂性碳上 并且在150-250℃的温度下进行反应，基本上不存在水，而在反应中形成的苯胺和水作为蒸气从反应产物中连续蒸馏出去，反应中硝基苯的浓度 溶液维持在0.01重量％以下，其中将锌化合物作为促进剂加入反应体系中，一氧化碳以1-500ppm的浓度加入到氢气中。