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24 条记录 (耗时 0.017 秒)

    Process for the preparation of secondary of tertiary dialkyl dicarbonate
    1.
    发明授权
    Process for the preparation of secondary of tertiary dialkyl dicarbonate 失效
    制备二硫酸二辛酯二次酸的方法

    公开(公告)号：US5206407A

    公开(公告)日：1993-04-27

    申请号：US594155

    申请日：1990-10-09

    申请人： Jean Desmurs ,  Serge Ratton

    发明人： Jean Desmurs ,  Serge Ratton

    IPC分类号： C07C68/06

    CPC分类号： C07C68/06

    摘要： A process for the preparation of a secondary or tertiary dialkyl dicarbonate. An alkali metal salt of an alkyl pyrocarbonate is contacted with (CO).sub.n X.sub.2 wherein X is defined as a leaving group and n is an integer from 1 to 2, in the presence of a complexing agent.

    摘要翻译： 一种二碳酸二烷基酯或二烷基二碳酸二烷基酯的制备方法。 使碳酸烷基酯的碱金属盐与络合剂存在下与（CO）n X 2接触，其中X定义为离去基团，n为1至2的整数。

    Diazotization of aromatic amines
    7.
    发明授权
    Diazotization of aromatic amines 失效
    芳香胺的重氮化

    公开(公告)号：US4269767A

    公开(公告)日：1981-05-26

    申请号：US18024

    申请日：1979-03-06

    申请人： Serge Ratton

    发明人： Serge Ratton

    IPC分类号： C07C67/00 ,  C07C241/00 ,  C07C245/20 ,  C09B29/00 ,  C07C113/00

    CPC分类号： C09B29/00

    摘要： Aromatic amine salts are diazotized, in aqueous solution/suspension, utilizing a nitrogenous vaporous admixture as the diazotizing agent, said admixture comprising nitric oxide and nitrogen peroxide, with the content of NO therein being in substantial excess with respect to the NO.sub.2.The resulting solutions of aryldiazonium salts are useful in the preparation of aromatic azoamines.

    摘要翻译： 芳族胺盐在水溶液/悬浮液中，使用含氮蒸汽混合物作为重氮化试剂，所述混合物包含一氧化氮和过氧化氢，其中NO的含量相对于NO 2大致过量。 得到的芳基重氮盐溶液可用于制备芳族偶氮胺。

    Preparation of n-phenylbenzoquinone-imine and converting same into p-phenylenediamines
    8.
    发明授权
    Preparation of n-phenylbenzoquinone-imine and converting same into p-phenylenediamines 失效
    制备N-苯基苯醌 - 并将其转化为对苯二甲酸

    公开(公告)号：US5189218A

    公开(公告)日：1993-02-23

    申请号：US668637

    申请日：1991-03-13

    申请人： Jean-Roger Desmurs ,  Hubert Kempf ,  Serge Ratton ,  Dominique Stephan

    发明人： Jean-Roger Desmurs ,  Hubert Kempf ,  Serge Ratton ,  Dominique Stephan

    IPC分类号： B01J31/02 ,  C07B61/00 ,  C07C209/52 ,  C07C249/02 ,  C07C251/22

    CPC分类号： C07C209/52 ,  C07C249/02

    摘要： N-phenylbenzoquinone-imine is prepared by oxidizing N-(4-hydroxyphenyl)aniline in a liquid, at least partially organic reaction medium, in the presence of a basic compound and, advantageously, a catalytically effective amount of at least one manganese, copper, cobalt and/or nickel compound; this imine can be reacted with an aliphatic or cycloaliphatic amine to produce an N-phenyl-N'-cycloalkyl-para-phenylene-diamine and an N-phenyl-N'-cycloalkyl-2,5-cyclohexadiene-1,4-diimine, such 1,4-diimine itself being easily reduced to the corresponding p-phenylenediamine.

    摘要翻译： 通过在碱性化合物存在下，在液体，至少部分有机反应介质中氧化N-（4-羟基苯基）苯胺，有利地，催化有效量的至少一种锰，铜 ，钴和/或镍化合物; 该亚胺可与脂族或脂环族胺反应，生成N-苯基-N'-环烷基 - 对 - 亚苯基二胺和N-苯基-N'-环烷基-2,5-环己二烯-1,4-二亚胺 ，这种1,4-二亚胺本身容易还原成相应的对苯二胺。

    Continuous direct preparation of nitrophenols
    9.
    发明授权
    Continuous direct preparation of nitrophenols 失效
    连续直接制备硝基酚

    公开(公告)号：US5030769A

    公开(公告)日：1991-07-09

    申请号：US432498

    申请日：1989-11-07

    申请人： Michel Baudouin ,  Jean-Luc Bougeois ,  Serge Ratton ,  Jean-Pierre Lecouve

    发明人： Michel Baudouin ,  Jean-Luc Bougeois ,  Serge Ratton ,  Jean-Pierre Lecouve

    IPC分类号： C07C201/08 ,  C07C205/22

    CPC分类号： C07C201/08

    摘要： Nitrophenols, in an isomer ratio para-nitrophenol/ortho-nitrophenol of at least 55/45, are continuously and directly prepared in steady state, by (a) establishing, in a confined reaction zone, an aqueous reaction solution including from 5% to 40% by weight of nitric acid, from 5% to 40% by weight of nitrous acid relative thereto, and an amount of nitrophenols within the limits of the solubility thereof in such reaction solution, (b) continuously introducing and reacting phenol and nitric acid into and with such reaction solution, at a rate of about 0.5 to 2.0 moles of nitric acid per mole of phenol, (c) maintaining the temperature in such confined reaction zone at a value ranging from about 10.degree. to about 40.degree. C. during such reaction, and (d) continuously withdrawing from such confined reaction zone admixture of para-nitrophenol and ortho-nitrophenol, in an isomer ratio para-nitrophenol/ortho-nitrophenol of at least 55/45.

    摘要翻译： 至少55/45的异构体对硝基苯酚/邻硝基苯酚的硝基苯酚以稳定状态连续并直接制备，通过（a）在约束反应区中建立包含5％至 40重量％的硝酸，相对于其的亚硝酸的5〜40重量％，以及在该反应溶液中溶解度范围内的硝基酚的量，（b）连续引入和反应苯酚和硝酸 以每摩尔苯酚约0.5至2.0摩尔硝酸的速率进入和与该反应溶液反应，（c）将该限制反应区中的温度保持在约10℃至约40℃的温度范围内 这样的反应，和（d）以至少55/45的对硝基苯酚/邻硝基苯酚的异构体比例连续地从对硝基苯酚和邻硝基苯酚的限制反应区混合物中排出。

    Process for preparing organic compounds containing an alkoxyalkylidene group
    10.
    发明授权
    Process for preparing organic compounds containing an alkoxyalkylidene group 失效
    制备含有烷氧基亚烷基的有机化合物的方法

    公开(公告)号：US4738796A

    公开(公告)日：1988-04-19

    申请号：US748457

    申请日：1985-06-25

    申请人： Serge Ratton

    发明人： Serge Ratton

    IPC分类号： C07C67/62 ,  C07C67/343 ,  C07C69/734 ,  C09K15/20 ,  C07C69/73 ,  C09K15/32

    CPC分类号： C07C69/734

    摘要： Process for the heat stabilization of alkyl alkoxyalkylidenemalonates in the presence of Lewis acids, such as metal catalytic compounds employed as catalysts during the preparation of the alkyl alkoxyalkylidenemalonates by condensation of a suitable malonate with a suitable ortho ester. The condensation reaction mixture is heated in the presence of a stabilizing compound selected from the group consisting of 8-hydroxyquinolines and organic acid phosphates in an amount sufficient to stabilize the alkyl alkoxyalkylidenemalonates against thermal decomposition.

    摘要翻译： 在路易斯酸存在下，例如在通过合适的丙二酸酯与合适的原酸酯缩合制备烷基烷基亚氨基戊二酸酯期间用作催化剂的金属催化化合物的情况下，烷基烷氧基亚烷基亚氨基三酸酯的热稳定化方法。 在选自8-羟基喹啉和有机酸性磷酸盐的稳定化合物存在下，将该缩合反应混合物加热至足以使烷基烷氧基亚氨基三氨基甲酸酯稳定以防止热分解。