公开(公告)号：US5322946A

公开(公告)日：1994-06-21

申请号：US2420

申请日：1993-01-08

申请人： Masato Takagi ,  Yoshihiro Naruse ,  Akinori Matsuura ,  Kyohko Kobayashi

发明人： Masato Takagi ,  Yoshihiro Naruse ,  Akinori Matsuura ,  Kyohko Kobayashi

IPC分类号： C07C37/04 ,  C07D215/20

CPC分类号： C07C37/04

摘要： An industrially useful process for the production of an aromatic hydroxy compound which comprises reacting an aromatic sulfonic acid alkali metal salt and/or an aromatic sulfonic acid with an alkali metal hydroxide in the presence of a surface active agent, wherein the reaction is effected by uniformly dispersing these-materials in a reaction medium selected from aliphatic, alicyclic and aromatic hydrocarbons. By employing this process, the product can be obtained with high purity, high yield and high selectivity using a minimum amount of the alkali metal hydroxide.

摘要翻译： 一种用于生产芳族羟基化合物的工业上有用的方法，其包括在表面活性剂存在下使芳族磺酸碱金属盐和/或芳族磺酸与碱金属氢氧化物反应，其中反应通过均匀 将这些材料分散在选自脂族，脂环族和芳族烃的反应介质中。 通过使用该方法，可以使用最少量的碱金属氢氧化物以高纯度，高产率和高选择性获得产物。

公开(公告)号：US5276234A

公开(公告)日：1994-01-04

申请号：US757224

申请日：1991-09-10

申请人： Tatsuya Nobusawa ,  Toshihide Suzuki ,  Akinori Matsuura

发明人： Tatsuya Nobusawa ,  Toshihide Suzuki ,  Akinori Matsuura

IPC分类号： B01J29/08 ,  C07C5/27 ,  C07C5/367 ,  C07C15/16

CPC分类号： B01J29/084 ,  C07C5/2737 ,  C07C2529/08

摘要： The invention provides a process for producing 2-methylnaphthalene by isomerization of 1-methylnaphthalene in which a Y zeolite having a unit cell constant of less than or equal to 24.37 .ANG. (10.sup.-10 m) is used as an isomerization catalyst.Since the isomerization is effected by the use of the inventive heterogeneous solid catalyst which has a long catalyst life, 2-methylnaphthalene is produced from 1-methylnaphthalene efficiently with less cost and handling steps for regeneration or exchange of the catalyst.

摘要翻译： 本发明提供一种使用1-甲基萘异构化生产2-甲基萘的方法，其中使用单元电池常数小于或等于24.37（10-10μm）的Y沸石作为异构化催化剂。 由于通过使用具有长催化剂寿命的本发明的异构固体催化剂来实现异构化，因此2-甲基萘由1-甲基萘有效地以较低的成本和催化剂的再生或更换的处理步骤有效地生产。

公开(公告)号：US5229001A

公开(公告)日：1993-07-20

申请号：US689454

申请日：1991-04-22

申请人： Shin Tanaka ,  Akinori Matsuura ,  Shintaro Furusaki

发明人： Shin Tanaka ,  Akinori Matsuura ,  Shintaro Furusaki

IPC分类号： C07D209/06

CPC分类号： C07D209/06

摘要： The invention provides a process for the extraction of indoles which comprises the steps of firstly extracting indoles from an indoles containing mixture with formamide or a formamide-containing solution and subsequently contacting the extract with at least one organic solvent selected from the group consisting of ethers, aromatic hydrocarbons and halogenated hydrocarbons to recover indoles with the organic solvent. This process is applicable to an industrial scale extraction of indoles, because the extraction solvent system has a high extraction selectivity of indoles, is required in a small amount with almost no losses through the extraction and recovery steps and can be used repeatedly.

公开(公告)号：US5124477A

公开(公告)日：1992-06-23

申请号：US448333

申请日：1989-12-11

申请人： Toshinobu Suzuki ,  Makiko Ijiri ,  Hitoshi Saima ,  Tadahiro Wakui ,  Tokio Iizuka ,  Akinori Matsuura

发明人： Toshinobu Suzuki ,  Makiko Ijiri ,  Hitoshi Saima ,  Tadahiro Wakui ,  Tokio Iizuka ,  Akinori Matsuura

IPC分类号： C07C51/15

CPC分类号： C07C51/15

摘要： The improved process for preparing para-hydroxybenzoic acid comprises reacting potassium phenol with carbon dioxide in an inert reaction medium or without using a reaction medium in the presence of at least one compound selected from the group consisting of the compounds represented by the following general formula I or II: ##STR1## at a reaction temperature of 230.degree.-450.degree. C. and at a carbon dioxide pressure ranging from atmospheric pressure to 6 kg/cm.sup.2 (G). The process may comprise two stages and the first-stage reaction described above is followed by the second stage in which the reaction is further continued with the pressure of carbon dioxide in the system being reduced and/or the reaction temperature being elevated within the range specified above.Also, phenol may be used as the starting material instead of potassium phenolate.