Catalyst for catalytic oxidation use
    54.
    发明授权
    Catalyst for catalytic oxidation use 有权
    用于催化氧化的催化剂

    公开(公告)号:US6133184A

    公开(公告)日:2000-10-17

    申请号:US165134

    申请日:1998-10-02

    摘要: A carrier containing silicon carbide, inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide carries at least one oxide selected from the group consisting of a vanadium oxide and a molybdenum oxide as catalytically active component. An inexpensive catalyst for catalytic oxidation use can be thus offered that does not change its properties over a period of time, that boasts stable catalytic activity over a period of time, and that is suitable for, e.g., manufacture of an acid anhydride and a nitrile compound by conducting a catalytic gas-phase oxidation reaction (partial oxidation reaction) on a hydrocarbon.

    摘要翻译: 含有碳化硅,无机结合成分和选自氧化铌,氧化锑和氧化钨中的至少一种氧化物的载体含有至少一种选自氧化钒和钼的氧化物 氧化物作为催化活性成分。 因此可提供廉价的用于催化氧化的催化剂,其在一段时间内不改变其性质,其在一段时间内具有稳定的催化活性,并且适于例如制备酸酐和腈 化合物通过在烃上进行催化气相氧化反应(部分氧化反应)。

    Process for preparing 2-cyanobiphenyl compound
    57.
    发明授权
    Process for preparing 2-cyanobiphenyl compound 失效
    2-氰基联苯化合物的制备方法

    公开(公告)号:US5998652A

    公开(公告)日:1999-12-07

    申请号:US009823

    申请日:1998-01-20

    CPC分类号: C07C253/30

    摘要: A process for preparing a 2-cyanobiphenyl compound represented by the formula (II): ##STR1## wherein R.sup.1 is an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or hydrogen atom, from a phenylmagnesium chloride compound represented by the formula (I): ##STR2## wherein R.sup.1 is as defined above. According to the process, a 2-cyanobiphenyl compound represented by the formula (II) can be economically, simply, industrially and advantageously prepared.

    摘要翻译: 一种由式(II)表示的2-氰基联苯化合物的制备方法,其中R 1是具有1至6个碳原子的烷基,具有1至6个碳原子的烷氧基或氢原子,由代表的苯基氯化镁化合物 由式(I)表示:其中R1如上所定义。 根据该方法,由式(II)表示的2-氰基联苯化合物可以在经济上简单地在工业上有利地制备。

    Removal of an impurity from a mixture with a codistillant
    58.
    发明授权
    Removal of an impurity from a mixture with a codistillant 失效
    从混合物中除去杂质

    公开(公告)号:US5977397A

    公开(公告)日:1999-11-02

    申请号:US291457

    申请日:1999-04-14

    申请人: Ronald Spohn

    发明人: Ronald Spohn

    CPC分类号: C07C253/34

    摘要: Disclosed is a method of removing an acid halide, anhydride, or ester impurity from a mixture with a desired product with which it codistills. At least about a stoichiometric amount of a primary or secondary amine having a boiling point at least 10.degree. C. higher or lower than the boiling point of said desired product is added to the mixture. The desired product is not an acid halide, anhydride, or ester and does not react with the amine. The amine forms a reaction product with the impurity that has a boiling point at least 10.degree. C. higher or lower than the boiling point of the desired product. The mixture is distilled to isolate the desired product.

    摘要翻译: 公开了从与其分离的所需产物的混合物中除去酰卤,酸酐或酯杂质的方法。 将至少约化学计量的沸点高于或低于所需产物沸点的至少10℃的伯胺或仲胺加到混合物中。 所需产物不是酰卤,酸酐或酯,并且不与胺反应。 胺与杂质的反应产物形成的沸点比所需产物的沸点高至少低10℃。 将混合物蒸馏以分离所需产物。

    Process for preparing biaryl compounds
    59.
    发明授权
    Process for preparing biaryl compounds 失效
    联芳基化合物的制备方法

    公开(公告)号:US5922898A

    公开(公告)日:1999-07-13

    申请号:US966335

    申请日:1997-11-07

    摘要: The present invention provides a process for preparing biaryl compounds comprising reacting an arylmetal reagent selected from arylmagnesium reagents and aryllithium reagents with an arylhalide in the presence of a catalyst system comprising a catalyst selected from nickel catalysts and palladium catalysts and a cocatalyst selected from zinc cocatalysts and cadmium cocatalysts. The present invention specifically provides a process for the preparation of 2-(4'-methylphenyl)benzonitrile comprising reacting a 4-methylphenylmagnesium reagent with a 2-halobenzonitrile in the presence of a catalyst system comprising a catalyst selected from nickel catalysts and palladium catalysts and a zinc cocatalyst.

    摘要翻译: 本发明提供了一种制备联芳基化合物的方法,包括在包含选自镍催化剂和钯催化剂的催化剂和选自锌助催化剂和助催化剂的助催化剂的催化剂体系存在下使选自芳基镁试剂和芳基锂试剂的芳基金属试剂与芳基卤反应, 镉助催化剂 本发明具体提供了制备2-(4'-甲基苯基)苄腈的方法,包括在包含选自镍催化剂和钯催化剂的催化剂的催化剂体系存在下使4-甲基苯基镁试剂与2-卤代苄腈反应, 锌助催化剂。

    Process for preparing 4'-methyl-2-cyanobiphenyl
    60.
    发明授权
    Process for preparing 4'-methyl-2-cyanobiphenyl 失效
    制备4'-甲基-2-氰基联苯的方法

    公开(公告)号:US5892094A

    公开(公告)日:1999-04-06

    申请号:US996341

    申请日:1997-12-22

    CPC分类号: C07C253/30

    摘要: Process for preparing 4'-methyl-2-cyanobiphenyl, comprising, catalytically hydrogenating at least one brominated cyanobiphenyl compound selected from 4'-dibromomethyl-2-cyanobiphenyl and 4'-bromomethyl-2-cyanobiphenyl; and process for regenerating 4'-methyl-2-cyanobiphenyl, comprising, catalytically hydrogenating at least one brominated cyanobiphenyl compound selected from 4'-dibromomethyl-2-cyanobiphenyl and 4'-bromomethyl-2-cyanobiphenyl, contained in a filtrate prepared by brominating 4'-methyl-2-cyanobiphenyl in a solvent; crystallizing 4'-bromomethyl-2-cyanobiphenyl from the resulting reaction mixture; and removing the resulting crystals from the reaction mixture by filtration. 4'-Methyl-2-cyanobiphenyl can be used as starting materials for 4'-bromomethyl-2-cyanobiphenyl.

    摘要翻译: 制备4'-甲基-2-氰基联苯的方法,包括催化氢化至少一种选自4'-二溴甲基-2-氰基联苯和4'-溴甲基-2-氰基联苯的溴代氰基联苯化合物; 以及用于再生4'-甲基-2-氰基联苯的方法,包括催化氢化选自4-溴 - 二溴甲基-2-氰基联苯和4'-溴甲基-2-氰基联苯中的至少一种溴化氰基联苯化合物,其包含在通过溴化制备的滤液中 4'-甲基-2-氰基联苯; 从所得反应混合物中结晶出4'-溴甲基-2-氰基联苯; 并通过过滤从反应混合物中除去所得晶体。 4'-甲基-2-氰基联苯可用作4'-溴甲基-2-氰基联苯的原料。