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28 条记录 (耗时 0.013 秒)

    Process for the preparation of cyclopropylamine
    2.
    发明授权
    Process for the preparation of cyclopropylamine 失效
    制备环丙胺的方法

    公开(公告)号：US6107522A

    公开(公告)日：2000-08-22

    申请号：US350289

    申请日：1999-07-09

    申请人： Wolfgang Kleemiss ,  Marcel Feld ,  Manfred Kaufhold

    发明人： Wolfgang Kleemiss ,  Marcel Feld ,  Manfred Kaufhold

    IPC分类号： C07C209/56 ,  C07B61/00 ,  C07C51/363 ,  C07C67/00 ,  C07C67/333 ,  C07C69/74 ,  C07C209/58 ,  C07C211/17 ,  C07C211/35 ,  C07C231/02 ,  C07C233/58 ,  C07L209/00

    CPC分类号： C07C231/02 ,  C07C209/58 ,  C07C51/363 ,  C07C67/00 ,  C07C2101/02

    摘要： Cyclopropylamine is prepared from butyrolactone by a process comprising:(a) reacting butyrolactone with hydrogen chloride, thereby yielding chlorobutyric acid, (b) esterifying said chlorobutyric acid with a primary or secondary alcohol having 4-8 carbon atoms, (c) cyclizing the ester with an alkali metal alcoholate of a primary alcohol having 1-3 carbon atoms to give a mixture of cyclopropanecarboxylic acid esters, (d) converting the cyclopropanecarboxylic acid ester mixture into cyclopropanecarboxylic acid amide by reacting the ester mixture with ammonia, and (e) reacting said cyclopropanecarboxylic acid amide with hypohalite ion in a basic medium, thereby forming cyclopropylamine.

    摘要翻译： 环丙胺由丁内酯制备，包括：（a）使丁内酯与氯化氢反应，从而产生氯代丁酸，（b）用具有4-8个碳原子的伯或仲醇酯化所述氯代丁酸，（c）使酯 与具有1-3个碳原子的伯醇的碱金属醇化物反应得到环丙烷羧酸酯的混合物，（d）通过使酯混合物与氨反应将环丙烷羧酸酯混合物转化为环丙烷羧酸酰胺，和（e）使 所述环丙烷羧酸酰胺与碱式介质中的次卤酸离子形成环丙胺。

    Process for the preparation of aminomalonic acid ester salts
    3.
    发明授权
    Process for the preparation of aminomalonic acid ester salts 失效
    氨基马来酸酯盐的制备方法

    公开(公告)号：US5847197A

    公开(公告)日：1998-12-08

    申请号：US868799

    申请日：1997-06-04

    申请人： Frank Bauer ,  Marcel Feld

    发明人： Frank Bauer ,  Marcel Feld

    IPC分类号： B01J23/44 ,  C07B61/00 ,  C07C227/04 ,  C07C227/06 ,  C07C227/40 ,  C07C229/24 ,  C07C229/00

    CPC分类号： C07C227/04

    摘要： The invention relates to a process for the preparation of aminomalonic acid esters and optionally their salts by the catalytic hydrogenation of a substituted malonic acid ester in an inert solvent, and optionally by the addition of an acid to the hydrogenation mixture. The process comprises carrying out the hydrogenation in the presence of a solid dehydrating agent and a solvent or solvent mixture in which the aminomalonic acid ester salt is substantially insoluble.

    摘要翻译： 本发明涉及通过在惰性溶剂中的取代的丙二酸酯的催化氢化以及任选通过向氢化混合物中加入酸来制备氨基马来酸酯和任选的其盐的方法。 该方法包括在固体脱水剂和其中氨基马来酸酯盐基本上不溶的溶剂或溶剂混合物的存在下进行氢化。

    Process for the preparation of 2-cyanoacetoxypropionic esters
    4.
    发明授权
    Process for the preparation of 2-cyanoacetoxypropionic esters 失效
    2-氰基乙酰氧基丙酸酯的制备方法

    公开(公告)号：US5412146A

    公开(公告)日：1995-05-02

    申请号：US253347

    申请日：1994-06-03

    申请人： Manfred Kaufhold ,  Marcel Feld

    发明人： Manfred Kaufhold ,  Marcel Feld

    IPC分类号： B01J31/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/19

    CPC分类号： C07C255/19 ,  C07C253/30

    摘要： For the preparation of 2-cyanoacetoxypropionic esters, a mixture of lactic ester and cyanoacetic ester is introduced, an alkali metal alcoholate is added as catalyst and the mixture is heated while the alcohol eliminated during the course of the reaction is distilled off. The course of the reaction is followed by means of gas chromatographic analysis and the reaction is terminated prior to eliminating the theoretical amount of alcohol by destroying the catalyst by acidification. The reaction mixture is worked up by distillation and the product easily separated from the reaction mass due to the substantial absence of high boiling components.

    摘要翻译： 为了制备2-氰基乙酰氧基丙酸酯，引入乳酸酯和氰基乙酸酯的混合物，加入碱金属醇化物作为催化剂，加热混合物，同时蒸馏除去反应过程中的醇。 反应过程之后是气相色谱分析，在通过酸化破坏催化剂消除理论量的醇之前终止反应。 通过蒸馏处理反应混合物，由于实质上不存在高沸点组分，产物容易与反应物质分离。

    Process for the preparation of aromatic monocarboxylic acids from toluene and substituted toluenes
    5.
    发明授权
    Process for the preparation of aromatic monocarboxylic acids from toluene and substituted toluenes 失效
    由甲苯和取代的甲苯制备芳族单羧酸的方法

    公开(公告)号：US4603220A

    公开(公告)日：1986-07-29

    申请号：US632261

    申请日：1984-07-18

    申请人： Marcel Feld

    发明人： Marcel Feld

    IPC分类号： B01J31/04 ,  C07B61/00 ,  C07C51/00 ,  C07C51/265 ,  C07C51/47 ,  C07C63/04 ,  C07C63/70 ,  C07C65/21 ,  C07C67/00 ,  C07C201/12 ,  C07C201/16 ,  C07C205/57

    CPC分类号： C07C201/12 ,  C07C201/16 ,  C07C51/265

    摘要： In a process for preparing aromatic monocarboxylic acids by oxidation of toluene or of toluenes substituted in the nucleus, the starting substances are reacted in the liquid phase with oxygen or with a gas containing oxygen, at a temperature of 80.degree.-180.degree. C. and a pressure of 5 to 50 bar in the presence of acetic acid as diluent and a soluble cobalt and/or manganese salt in combination with a bromide, and the aromatic monocarboxylic acids are then obtained by solid-liquid separation of the cooled reaction mixture.To reduce the dimensions of the oxidation reactor, for which particularly corrosion-resistant materials are necessary, and to isolate the target products in high yield and purity, as well as to reduce the technical complexity and cost of the treatment of the amounts of solvents that are yielded, relatively small amounts of acetic acid are used as solvents or diluents, namely at a ratio by weight of the alkyl aromatic being oxidized and acetic acid of 0.5:1 to 6:1. Not until the reaction has ended is the dilution, which is necessary for the isolation of the target product by solid-liquid separation of the cooled reaction mixture, performed by the addition of dilute aqueous acetic acid or of the washing filtrate from a preceding oxidation run. A typical example is the preparation of p-tert-butylbenzoic acid from p-tert-butyltoluene by the method described.

    摘要翻译： 在通过甲苯或核中取代的甲苯的氧化制备芳族单羧酸的方法中，起始物质在液相中与氧气或含氧气体在80-180℃的温度下反应， 在乙酸作为稀释剂存在下，压力为5至50巴，与溴化物结合使用可溶性钴和/或锰盐，然后通过冷却的反应混合物的固液分离获得芳族单羧酸。 为了减小需要特别耐腐蚀材料的氧化反应器的尺寸，并以高产率和纯度分离目标产物，以及降低处理溶剂量的技术复杂性和成本， 使用相对少量的乙酸作为溶剂或稀释剂，即以氧化的烷基芳族化合物的重量比为0.5:1至6:1的乙酸。 直到反应结束为止，稀释是通过冷却的反应混合物的固液分离来分离目标产物所必需的，其通过加入稀乙酸水溶液或从先前的氧化运行中洗涤滤液进行 。 典型的实例是通过所述方法从对叔丁基甲苯制备对叔丁基苯甲酸。

    Process for preparing cyclopropyl alkyl ketones and 4,5-dihydroalkylfurans
    7.
    发明授权
    Process for preparing cyclopropyl alkyl ketones and 4,5-dihydroalkylfurans 失效
    制备环丙基烷基酮和4,5-二氢烷基呋喃的方法

    公开(公告)号：US5629455A

    公开(公告)日：1997-05-13

    申请号：US589952

    申请日：1996-01-23

    申请人： Manfred Kaufhold ,  Marcel Feld

    发明人： Manfred Kaufhold ,  Marcel Feld

    IPC分类号： C07C45/59 ,  C07C45/67 ,  C07C49/293 ,  C07C49/317 ,  C07C49/792 ,  C07D307/28 ,  C07C45/54

    CPC分类号： C07D307/28 ,  C07C45/676

    摘要： The invention relates to a novel process for the simultaneous preparation of cyclopropyl alkyl ketones and 4,5-dihydroalkylfurans from 3-acyltetrahydrofuran-2-ones using a metal salt according to the diagram ##STR1## In the reaction, N-alkyllactams and/or N-acylmorpholines which are high-boiling and only slightly miscible with water are used. By charging the solvent, the metal salt and the 3-acyltetrahydrofuran-2-one in a molar excess with respect to the metal salt, heating the mixture to 160.degree. to 220.degree. C. and metering in further 3-acyl-tetrahydrofuran-2-one, the desired products are obtained in high yields. The metal salt can moreover be recovered in a simple manner by washing with water.

    摘要翻译： 本发明涉及一种根据图中使用金属盐从3-酰基四氢呋喃-2-酮同时制备环丙基烷基酮和4,5-二氢烷基呋喃的新方法。在反应中，N - 烷基内酰胺和/或N-酰基吗啉，它们是高沸点且仅与水轻微混溶。 通过将溶剂，金属盐和3-酰基四氢呋喃-2-酮相对于金属盐摩尔过量地加入，将混合物加热至160℃至220℃，并进一步计量3-酰基 - 四氢呋喃-2 - 一种，以高产率获得所需的产物。 此外，金属盐可以通过用水洗涤以简单的方式回收。

    Method of isolating cobalt and/or manganese as oxalates
    8.
    发明授权
    Method of isolating cobalt and/or manganese as oxalates 失效
    以草酸盐分离钴和/或锰的方法

    公开(公告)号：US4490298A

    公开(公告)日：1984-12-25

    申请号：US462862

    申请日：1983-02-01

    申请人： Marcel Feld

    发明人： Marcel Feld

    IPC分类号： C07C55/07 ,  C07C51/00 ,  C07C51/41 ,  C07C51/42 ,  C07C67/00 ,  C07F11/00 ,  C07F15/06

    CPC分类号： C07C51/412

    摘要： In a process for the isolation of cobalt and/or manganese in the form of precipitated, easily filtrable cobalt and/or manganese oxalates from acetic acid solutions or extracts, the solutions in question are treated with oxalic acid dimethyl or diethyl ester at temperatures of 50.degree. to 250.degree. C.

    摘要翻译： 在从乙酸溶液或提取物中分离沉淀的，易于过滤的钴和/或草酸锰的形式的钴和/或锰的方法中，所讨论的溶液用草酸二甲酯或二乙酯在50℃ DEG至250℃

    Method for the recovery of cobalt oxalate and/or manganese oxalate
    10.
    发明授权
    Method for the recovery of cobalt oxalate and/or manganese oxalate 失效
    回收草酸钴和/或草酸锰的方法

    公开(公告)号：US4488999A

    公开(公告)日：1984-12-18

    申请号：US462861

    申请日：1983-02-01

    申请人： Marcel Feld

    发明人： Marcel Feld

    IPC分类号： C07F13/00 ,  B01J31/40 ,  C07C51/41 ,  C07F5/06

    CPC分类号： B01J31/04 ,  B01J31/4015 ,  B01J31/403 ,  C07C51/412 ,  B01J2231/70 ,  Y02P20/584

    摘要： In a process for the recovery of cobalt oxalate and/or manganese oxalate, the solutions or extracts containing cobalt and/or manganese are treated with sodium, potassium or ammonium oxalate. To obtain an easily filtrable cobalt and/or manganese oxalate precipitate, the precipitation is performed at temperatures of 50.degree. to 160.degree. C. with 1 to 2 moles of solid alkali oxalate or ammonium oxalate. When sodium oxalate is used, the water content of the solutions or extracts is from 5 to 90% by weight, when potassium oxalate is used it is from 2 to 15% by weight, and when ammonium oxalate is used it is from 1 to 12% by weight.

    摘要翻译： 在草酸钴和/或草酸锰的回收方法中，含有钴和/或锰的溶液或提取物用草酸钠，钾或铵处理。 为了获得易于过滤的钴和/或草酸锰沉淀物，用1至2摩尔固体碱草酸盐或草酸铵在50至160℃的温度下进行沉淀。 当使用草酸钠时，当使用草酸钾时，溶液或提取物的水含量为5-90重量％，当使用草酸铵时为1至12重量％ 重量％。