利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.016 秒)

    Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl acid
    2.
    发明授权
    Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl acid 失效
    制备4'-羟基联苯-4-羧酸的方法

    公开(公告)号：US4755617A

    公开(公告)日：1988-07-05

    申请号：US31709

    申请日：1987-03-30

    申请人： Tohru Miura ,  Teruyuki Nagata ,  Hideki Mizuta

    发明人： Tohru Miura ,  Teruyuki Nagata ,  Hideki Mizuta

    IPC分类号： C07C65/105 ,  C07C51/347 ,  C07C51/377 ,  C07C65/15

    CPC分类号： C07C51/347 ,  C07C51/377

    摘要： A process for the preparation of 4'-hydroxybiphenyl-4-carboxylic acid by reacting a cyclohexanone-4-carboxylic acid compound with phenol in the presence of an acid catalyst, and then subjecting the resulting 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid compound to decomposition and dehydrogenation reactions in the presence of a base and a dehydrogenation catalyst. The aforesaid cyclohexanone-4-carboxylic acid compound is obtained by catalytically hydrogenating a 4-hydroxybenzoic acid compound in a secondary alcohol or tertiary alcohol solvent, and the reaction mixture thus obtained is directly used for the reaction with phenol.

    摘要翻译： 通过环己酮-4-羧酸化合物与苯酚在酸催化剂存在下反应制备4'-羟基联苯-4-羧酸的方法，然后将所得的4,4'-双（4-羟基苯基） 环己烷羧酸化合物在碱和脱氢催化剂存在下进行分解和脱氢反应。 上述环己酮-4-羧酸化合物是通过在仲醇或叔醇溶剂中催化氢化4-羟基苯甲酸化合物而获得的，所得反应混合物直接用于与苯酚反应。

    Process for producing 4-alkoxyanilines
    3.
    发明授权
    Process for producing 4-alkoxyanilines 失效
    4-烷氧基苯胺的制备方法

    公开(公告)号：US4625062A

    公开(公告)日：1986-11-25

    申请号：US675225

    申请日：1984-11-27

    申请人： Teruyuki Nagata ,  Akihiro Tamaki ,  Hiroki Ohnishi ,  Hideki Mizuta

    发明人： Teruyuki Nagata ,  Akihiro Tamaki ,  Hiroki Ohnishi ,  Hideki Mizuta

    IPC分类号： C07B61/00 ,  B01J23/00 ,  B01J23/38 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C85/11

    CPC分类号： C07C213/00

    摘要： 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.

    摘要翻译： 4-烷氧基苯胺在工业上有利地通过在贵金属催化剂存在下在含有低级脂族醇，硫酸和水或低级脂族羧酸或二者的混合溶剂中催化氢化硝基苯以诱导氢化和Bamberger- 类型重排反应。 混合溶剂每摩尔硝基苯含有至少10摩尔，优选30至60摩尔的低级脂族醇，1摩尔，优选2至7摩尔硫酸/摩尔硝基苯，2至30 重量％，优选3至10重量％的水，低级脂族羧酸或两者。

    1,3,6-trialkylhexahydro-1,3,6-triazocine-2-on and preparation process thereof
    6.
    发明授权
    1,3,6-trialkylhexahydro-1,3,6-triazocine-2-on and preparation process thereof 失效
    1,3,6-三烷基六氢-1,3,6-三唑辛-2-酮及其制备方法

    公开(公告)号：US5514793A

    公开(公告)日：1996-05-07

    申请号：US389934

    申请日：1995-02-17

    申请人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    发明人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    IPC分类号： C07D255/02

    CPC分类号： C07D255/02

    摘要： The present invention relates to 1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-on represented by the formula (1): ##STR1## wherein R is a C.sub.1 .about.C.sub.8 alkyl group and a preparation process of the compound comprising reacting N,N',N"-trialkyldiethylenetriamine represented by the formula (2): ##STR2## wherein R is a C.sub.1 .about.C.sub.8 alkyl group, with urea, phosgene or carbon dioxide.

    摘要翻译： 本发明涉及由式（1）表示的1,3,6-三烷基六氢-1,3,6-三氮杂辛-2-酮：其中R是C 1 -C 6 C 8烷基和制备 该方法包括使由式（2）表示的N，N'，N“ - 三烷基二亚乙基三胺：其中R是C 1 -C 6 C 8烷基，与尿素，光气或二氧化碳反应。

    Process for producing 1,3-dialkyl-2-imidazolidinone
    7.
    发明授权
    Process for producing 1,3-dialkyl-2-imidazolidinone 失效
    1,3-二烷基-2-咪唑啉酮的制备方法

    公开(公告)号：US5583256A

    公开(公告)日：1996-12-10

    申请号：US494735

    申请日：1995-06-26

    申请人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    发明人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    IPC分类号： C07C275/14 ,  C07D233/34

    CPC分类号： C07D233/34 ,  C07C275/14

    摘要： A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

    摘要翻译： 公开了一种新的双脲化合物，该化合物的制备方法和1,3-二烷基-2-咪唑烷酮的制备方法，本公开提供了1,3-二烷基-2-咪唑烷酮的新型制备方法，同时使得有效 利用缺乏大量使用的N，N'，N“ - 三烷基二乙基三胺，需要开发新的应用。

    Process for producing 1, 3-dialkyl-2-imidazolidinone
    8.
    发明授权
    Process for producing 1, 3-dialkyl-2-imidazolidinone 失效
    1,3-二烷基-2-咪唑啉酮的制备方法

    公开(公告)号：US4731453A

    公开(公告)日：1988-03-15

    申请号：US846564

    申请日：1986-03-31

    申请人： Teruyuki Nagata ,  Nobuyuki Kajimoto ,  Masaru Wada ,  Hideki Mizuta ,  Akihiro Tamaki

    发明人： Teruyuki Nagata ,  Nobuyuki Kajimoto ,  Masaru Wada ,  Hideki Mizuta ,  Akihiro Tamaki

    IPC分类号： C07D233/32

    CPC分类号： C07D233/32

    摘要： An improved process of producing 1, 3-dialkyl-2-imidazolidinones directly from N, N'-dialkylethylenediamine and urea with a high yield is provided, which process comprises reacting a N, N'-dialkylethylenediamine of the formula ##STR1## wherein R represents --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 or --C.sub.4 H.sub.9, with urea at 180.degree. C. or higher in the presence of a polar solvent, to obtain a 1, 3-dialkyl-2-imidazolidinone of the formula ##STR2## and preferably comprises carrying out the reaction at two stages, that is, the initial period reaction being carried out at 140.degree. C. or lower to from a 1, 1'-dialkyl-1 1'-dimethylenebisurea and successively the latter reaction being carried out at 180.degree. C. or higher.

    摘要翻译： 提供了一种直接由N，N'-二烷基乙二胺和尿素以高产率制备1,3-二烷基-2-咪唑啉酮的改进方法，该方法包括使式IMA的N，N'-二烷基乙二胺与R 表示-CH 3，-C 2 H 5，-C 3 H 7或-C 4 H 9，尿素在180℃以上，在极性溶剂的存在下，得到式“IMAGE”的1,3-二烷基-2-咪唑啉酮，优选 包括在两个阶段进行反应，即初始时间反应在140℃或更低温度下进行，从1,1'-二烷基-1,1'-二亚甲基二氢呋喃进行，并且后续反应在 180℃以上。

    High purity 1,3-dialkyl-2-imidazolidinone and preparation process of same
    9.
    发明授权
    High purity 1,3-dialkyl-2-imidazolidinone and preparation process of same 失效
    高纯度1,3-二烷基-2-咪唑啉酮及其制备方法

    公开(公告)号：US5872260A

    公开(公告)日：1999-02-16

    申请号：US897768

    申请日：1997-07-21

    申请人： Hideki Mizuta ,  Masazumi Takaoka ,  Teruyuki Nagata

    发明人： Hideki Mizuta ,  Masazumi Takaoka ,  Teruyuki Nagata

    IPC分类号： C07D233/32

    CPC分类号： C07D233/32

    摘要： In a process for reacting N,N'-dialkylethylenediamine with urea in an aprotic polar solvent to prepare 1,3-dialkyl-2-imidazolidinone, a process comprising progressing the reaction while continuously adding N,N'-dialkylethylnediamine and urea into the aprotic polar solvent. The process is a high-yield manufacturing process in industry capable of efficiently producing very high purity 1,3-dialkyl-2-imidazolidinone which contains less than 0.1% by weight of by-product 1,3-dialkyl-2-imidazolidinimine derived from the raw materials.

    摘要翻译： 在非质子极性溶剂中使N，N'-二烷基乙二胺与脲反应以制备1,3-二烷基-2-咪唑啉酮的方法，包括进行反应，同时连续加入N，N'-二烷基乙二胺和尿素至非质子传递 极性溶剂。 该方法是能够有效地生产非常高纯度的1,3-二烷基-2-咪唑啉酮的工业中的高产量制备方法，该1,3-二烷基-2-咪唑啉酮含有少于0.1％重量的副产物1,3-二烷基-2-咪唑啉亚胺衍生自 的原料。