Process for preparation of naphthalene-2,6-dicarboxylic acid dialkali
metal salts
    1.
    发明授权
    Process for preparation of naphthalene-2,6-dicarboxylic acid dialkali metal salts 失效
    萘-2,6-二羧酸二碱金属盐的制备方法

    公开(公告)号:US4820868A

    公开(公告)日:1989-04-11

    申请号:US912957

    申请日:1986-09-29

    IPC分类号: C07C51/41 C07C51/353

    CPC分类号: C07C51/412

    摘要: Disclosed is a process for the preparation of a naphthalene-2,6-dicarboxylic acid dialkali metal salt which comprises heating an alkali metal salt of naphthoic acid and/or a dialkali metal salt of naphthalene-dicarboxylic acid under pressure with carbon dioxide gas in the presence of a catalyst, wherein an aprotic polycyclic aromatic compound having 2 or 3 rings is used as a reaction medium. Naphthalene-2,6-dicarboxylic acid dialkali metal salt can be obtained in high yield and selectivity with a good reproducibility of the reaction.

    摘要翻译: 公开了一种制备萘-2,6-二羧酸二碱金属盐的方法,其包括在压力下用二氧化碳气体加热萘甲酸的碱金属盐和/或萘二羧酸的二碱金属盐 存在催化剂,其中使用具有2或3个环的非质子性多环芳族化合物作为反应介质。 可以以高产率和选择性获得萘-2,6-二羧酸二碱金属盐,并具有良好的反应重复性。

    Process for preparing indan derivatives
    3.
    发明授权
    Process for preparing indan derivatives 失效
    制备茚满衍生物的方法

    公开(公告)号:US6057479A

    公开(公告)日:2000-05-02

    申请号:US91229

    申请日:1998-07-09

    摘要: This invention relates to a process for preparing indan derivatives and comprises a process for preparing cis-1-amino-2-indanol by treating (.+-.)indan-1,2-diol and/or its 2-formate derivative with specific microbes to give optically active 2-hydroxy-1-indanone, converting the optically active 2-hydroxy-1-indanone to its oxime, and treating the oxime with hydrogen or a hydrogen donor in the presence of a heterogeneous hydrogenation catalyst, a process for preparing optically active 2-hydroxy-1-indanone and/or optically active indan-1,2-diol by treating (.+-.)indan-1,2-diol and/or its 2-formate derivative with specific microbes, and a process for preparing cis-1-amino-2-indanol by treating the oxime of 2-hydroxy-1-indanone with hydrogen or a hydrogen donor in the presence of a heterogeneous hydrogenation catalyst.

    摘要翻译: PCT No.PCT / JP97 / 00040 Sec。 371日期:1998年7月9日 102(e)日期1998年7月9日PCT 1997年1月10日PCT PCT。 公开号WO97 / 25436 日期1997年7月17日本发明涉及一种制备茚满衍生物的方法,包括通过处理(+/-)茚满-1,2-二醇和/或其2- 甲酸酯衍生物与特定的微生物反应得到光学活性的2-羟基-1-茚满酮,将光学活性的2-羟基-1-二氢茚酮转化成其肟,并在异相氢化催化剂存在下用氢或氢供体处理肟 ,通过用(+/-)茚满-1,2-二醇和/或其2-甲酸酯衍生物处理具有特异性的方法制备光学活性2-羟基-1-茚满酮和/或光学活性茚满-1,2-二醇的方法 微生物和通过在异相氢化催化剂存在下用氢或氢供体处理2-羟基-1-二氢茚酮的肟而制备顺式-1-氨基-2-茚醇的方法。

    Process for preparing 2,6-naphthalene-dicarboxylic acid
    8.
    发明授权
    Process for preparing 2,6-naphthalene-dicarboxylic acid 失效
    2,6-萘二羧酸的制备方法

    公开(公告)号:US5175354A

    公开(公告)日:1992-12-29

    申请号:US678425

    申请日:1991-04-01

    IPC分类号: C07C51/41

    CPC分类号: C07C51/416

    摘要: The process of this invention for preparing 2,6-naphthalene-dicarboxylic acid comprises a reaction step (Step A) wherein 2,6-naphthalene-dicarboxylic acid potassium salts consisting of 2,6-naphthalene-dicarboxylic acid dipotassium salt and/or 2,6-naphthalene-dicarboxylic acid monopotassium salt are allowed to react with benzene-carboxylic acids in the presence of water to yield 2,6-naphthalene-dicarboxylic acid and benzene-carboxylic acid potassium salts and a separation step (Step B) wherein the crystallized 2,6-naphthalene-dicarboxylic acid is separated from the benzene-carboxylic acid potassium salts dissolved in the aqueous solution and provides 2,6-naphthalene-dicarboxylic acid, useful as raw material for polymers, at low cost on a commerical scale with recycle of potassium.

    摘要翻译: 本发明制备2,6-萘二羧酸的方法包括反应步骤(步骤A),其中由2,6-萘二甲酸二钾盐和/或2组成的2,6-萘二羧酸钾盐 ,6-萘 - 二羧酸单钾盐在水存在下与苯羧酸反应,得到2,6-萘二甲酸和苯 - 羧酸钾盐和分离步骤(步骤B),其中 将结晶的2,6-萘二甲酸与溶于水溶液中的苯 - 羧酸钾盐分离,以商业规模低成本提供可用作聚合物原料的2,6-萘二羧酸, 回收钾。

    Alpha-thio-alpha-aryl-substituted alkanonitrile and process for
preparing alpha-aryl-substituted alkanonitrile therefrom
    9.
    发明授权
    Alpha-thio-alpha-aryl-substituted alkanonitrile and process for preparing alpha-aryl-substituted alkanonitrile therefrom 失效
    α-硫代-α-芳基取代的链烷腈及其制备α-芳基取代的链烷腈的方法

    公开(公告)号:US4340740A

    公开(公告)日:1982-07-20

    申请号:US169193

    申请日:1980-07-15

    摘要: An alpha-thio-alpha-aryl-substituted alkanonitrile of the general formula ##STR1## wherein Ar represents an aromatic group, R represents a hydrogen atom or an alkyl group, R.sup.1 represents an alkyl group or an aromatic group, and Y represents an oxygen atom or a carbonyl group. The above compound can be prepared by reacting an alpha-aryl-substituted-alpha-thio-acetonitrile of the general formula ##STR2## wherein Ar, Y and R.sup.1 are as defined above, with an alkylating agent in the presence of a strong base. This compound is useful as an intermediate for producing an alpha-aryl-substituted alkane-carboxylic acid of the general formula ##STR3## wherein Ar, Y and R.sup.1 are as defined above.

    摘要翻译: 其中Ar表示芳族基团,R表示氢原子或烷基,R1表示烷基或芳基,Y表示氧原子的通式为“IMAGE”的α-硫代-α-芳基取代的链烷腈 原子或羰基。 上述化合物可以通过在强碱存在下使烷基化剂与通式为“IMAGE”的α-芳基取代的α-硫代 - 乙腈反应来制备,其中Ar,Y和R 1如上定义。 该化合物可用作制备通式为“IMAGE”的α-芳基取代的烷烃 - 羧酸的中间体,其中Ar,Y和R 1如上定义。