中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

49 records (took 0.011 seconds)

    Supported copper catalyst, process for its preparation and process for the preparation of N-alkylated aromatic amines using this copper catalyst
    2.
    发明授权
    Supported copper catalyst, process for its preparation and process for the preparation of N-alkylated aromatic amines using this copper catalyst 失效
    支持铜催化剂，其制备方法及使用该铜催化剂制备N-烷基化芳族氨基酸的方法

    公开(公告)号：US5097071A

    公开(公告)日：1992-03-17

    申请号：US585590

    申请日：1990-09-20

    Applicant: Otto Immel ,  Hans-Helmut Schwarz ,  Rudolf Braden

    Inventor： Otto Immel ,  Hans-Helmut Schwarz ,  Rudolf Braden

    IPC: B01J23/889 ,  C07B61/00 ,  C07C209/18 ,  C07C209/36 ,  C07C211/48

    CPC classification number: B01J23/8892 ,  C07C209/18 ,  C07C209/36

    Abstract: The novel copper catalyst on an Al.sub.2 O.sub.3 -containing carrier which is impregnated with compounds of manganese and of one or more rare earth metals, having a Cu content of 0.1-5% by weight, a total content of compounds of manganese and of the rare earth metal or metals of 0.05 to 8% by weight, calculated as metals, is described, the weight ratio of rare earth metal(s) to manganese being 5:1-1:5, calculated as metal, and all percentages being relative to the total weight of the catalyst. Such catalyst is prepared by first impregnating the carrier with compounds of manganese and of the rare earth metal or metals, then fixing the copper salt on the impregnated carrier and activating the catalyst in a preferred manner by treatment with H.sub.2 at 150.degree. to 350.degree. C. Such a catalyst is suitable, for example, for the N-alkylation of aromatic amines with alkanols, where the aromatic amines can be prepared from the parent nitro compounds in an alkylation reactor with simultaneous addition of H.sub.2.

    Abstract translation: 在含有Al 2 O 3的载体上的新型铜催化剂，其浸渍有锰和一种或多种稀土金属的化合物，其Cu含量为0.1-5重量％，锰和稀土化合物的总含量 以金属计算为0.05〜8重量％的金属或金属，稀土金属与锰的重量比为5:1-1:5，以金属计算，所有百分比均相对于 催化剂的总重量。 这种催化剂是通过首先用锰和稀土金属或金属的化合物浸渍载体，然后将铜盐固定在浸渍的载体上并以优选的方式通过在150-350℃下用H 2处理来活化催化剂来制备的。 这种催化剂适用于芳族胺与链烷醇的N-烷基化，其中芳族胺可以在烷基化反应器中由母体硝基化合物制备，同时加入H 2。

    Aminomethyl cyclododecanes, a process for their production and their use as corrosion inhibitors
    4.
    发明授权
    Aminomethyl cyclododecanes, a process for their production and their use as corrosion inhibitors 失效
    氨基甲基环十二烷，它们的生产工艺及其用作腐蚀抑制剂

    公开(公告)号：US4251462A

    公开(公告)日：1981-02-17

    申请号：US69700

    申请日：1979-08-27

    Applicant: Rudolf Braden ,  Kuno Wagner

    Inventor： Rudolf Braden ,  Kuno Wagner

    IPC: B01J31/00 ,  C07C45/00 ,  C07C45/50 ,  C07C67/00 ,  C07C209/00 ,  C07C209/26 ,  C07C211/17 ,  C08G18/10 ,  C08G59/50 ,  C08J9/00 ,  C10L1/22 ,  C10L1/222 ,  C10L10/08 ,  C10M133/06 ,  C10N30/12 ,  C10N40/04 ,  C10N70/00 ,  C23F11/14 ,  C07C83/00

    CPC classification number: C10M133/06 ,  C07C45/50 ,  C08G18/10 ,  C08G59/5026 ,  C08J9/0028 ,  C10L1/2222 ,  C10M2215/04 ,  C10M2215/26

    Abstract: The instant invention is directed to aminomethyl cyclododecanes selected from the group consisting of aminomethyl cyclododecanes, bis-(aminomethyl)-cyclododecanes, tris-(aminomethyl)-cyclododecanes and mixtures thereof. The invention is also directed to a process for producing aminomethyl cyclododecanes, bis-(aminomethyl)-cyclododecanes, tris-(aminomethyl)-cyclododecanes, and mixtures thereof comprising reacting cyclododeca-1,5,9-triene with carbon monoxide and hydrogen in the presence of a rhodium-containing catalyst at temperatures of from 80.degree. to 180.degree. C. and under pressures of from 30 to 900 bars, separating the catalyst off from the hydroformylation product and treating the hydroformylation products with hydrogen at from 50.degree. to 150.degree. C. in the presence of ammonia and a hydrogenation catalyst, optionally after separating by distillation into the individual components.

    Abstract translation: 本发明涉及选自氨基甲基环十二烷，双 - （氨基甲基） - 环十二烷，三 - （氨基甲基） - 环十二烷及其混合物的氨基甲基环十二烷。 本发明还涉及一种生产氨基甲基环十二烷，双（（氨基甲基） - 环十二烷，三 - （氨基甲基） - 环十二烷及其混合物的方法，包括使环十二碳-1,5,9-三烯与一氧化碳和氢在 在80至180℃的温度和30至900巴的压力下存在含铑催化剂，将催化剂从加氢甲酰化产物中分离出来，并用50至150℃的氢处理加氢甲酰化产物 在氨和氢化催化剂的存在下，任选地在通过蒸馏分离成各个组分之后。

    Coumaranedione-3-monoximes
    7.
    发明授权
    Coumaranedione-3-monoximes 失效
    香豆酮-3单肟

    公开(公告)号：US3993666A

    公开(公告)日：1976-11-23

    申请号：US495550

    申请日：1974-08-08

    Applicant: Hermann Oediger ,  Rudolf Braden

    Inventor： Hermann Oediger ,  Rudolf Braden

    IPC: C07D307/83 ,  C07D493/00

    CPC classification number: C07D307/83

    Abstract: Coumaranedione-3-monoximes which may be substituted in the benzene ring by halo or alkyl. The compounds are obtained by treating the corresponding 2-hydroxyphenylacetic acid lactone with nitrous acid or with an ester, salt or chloride of nitrous acid in an acid medium. The coumaranedione-3-monoxime thus obtained is an intermediate which undergoes hydrogenation in the presence of a suitable acid anhydride to afford the corresponding 3-amidocoumaranone, which compound, upon hydrolysis in the presence of dilute acid, affords the corresponding .alpha.-amino-2-hydroxyphenylacetic acid. That product is also an intermediate which has utility in the synthesis of antibiotics, including cephalosporin and penicillin derivatives.

    Abstract translation: 可以在苯环中被卤素或烷基取代的甘油二酮-3-单肟。 该化合物通过在酸性介质中用亚硝酸或亚硝酸的酯，盐或氯化物处理相应的2-羟基苯基乙酸内酯而获得。 由此获得的香豆素二酮-3-肟是在合适的酸酐存在下进行氢化得到相应的3-氨基香豆素的中间体，该化合物在稀酸存在下水解时，得到相应的α-氨基-2 - 羟基苯乙酸。 该产品也是在抗生素合成中具有用途的中间体，包括头孢菌素和青霉素衍生物。

Patent Agency Ranking