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32 条记录 (耗时 0.024 秒)

    Preparation of glyoxal
    21.
    发明授权
    Preparation of glyoxal 失效
    乙二醛的制备

    公开(公告)号：US4503261A

    公开(公告)日：1985-03-05

    申请号：US400690

    申请日：1982-07-22

    申请人： Wolfgang Sauer ,  Klaus Halbritter ,  Heinz Engelbach

    发明人： Wolfgang Sauer ,  Klaus Halbritter ,  Heinz Engelbach

    IPC分类号： C07C45/38

    CPC分类号： C07C45/38

    摘要： A process for the continuous preparation of glyoxal by oxidation of ethylene glycol, in which the ethylene glycol, oxygen and an inert gas are passed, at from 450.degree. to 800.degree. C., over a catalyst consisting of one or more layers of copper crystals and one or more layers of silver crystals, the copper and silver crystals having a particle size of from 0.1 to 2.5 mm.

    摘要翻译： 通过氧化乙二醇（其中乙二醇，氧气和惰性气体）在450℃至800℃下通过由一层或多层铜晶体组成的催化剂连续制备乙二醛的方法 和一层或多层银晶，铜和银晶体的粒径为0.1至2.5mm。

    Preparation of 5-(2,2-dihalovinyl)-4,4-dialkyl-tetrahydro-furan-2-ones
    22.
    发明授权
    Preparation of 5-(2,2-dihalovinyl)-4,4-dialkyl-tetrahydro-furan-2-ones 失效
    制备5-（2,2-二卤代乙烯基）-4,4-二烷基 - 四氢 - 呋喃-2-酮

    公开(公告)号：US4324725A

    公开(公告)日：1982-04-13

    申请号：US178177

    申请日：1980-08-14

    申请人： Rudolf Kropp ,  Martin Fischer ,  Klaus Halbritter

    发明人： Rudolf Kropp ,  Martin Fischer ,  Klaus Halbritter

    IPC分类号： C07D307/30 ,  C07D307/33 ,  C07D307/32

    CPC分类号： C07D307/33 ,  C07D307/30

    摘要： Preparation of 5-(2,2-dihalovinyl)-4,4-dialkyl-tetrahydro-furan-2-ones of the formula I ##STR1## where R.sup.1 and R.sup.2 are each alkyl of 1 to 4 carbon atoms and X is halogen, by reacting a carboxylic acid amide of the formula II ##STR2## where R.sup.3 and R.sup.4 are each alkyl of 1 to 4 carbon atoms, aralkyl of 7 to 9 carbon atoms or aryl of 6 to 10 carbon atoms, or together with the nitrogen form a 5-membered or 6-membered saturated ring which may contain a second hetero-atom, with a carbon tetrahalide of the formula IIICX.sub.4 (III)to give an iminium salt of the formula IV ##STR3## and then hydrolyzing the iminium salt; and novel iminium salts of the formula IV.

    摘要翻译： 制备式I（I）的5-（2,2-二卤代乙烯基）-4,4-二烷基 - 四氢 - 呋喃-2-酮，其中R 1和R 2各自是1至4个碳原子的烷基，X 是通过使式II的羧酰胺（II）反应，其中R 3和R 4各自为1至4个碳原子的烷基，7至9个碳原子的芳烷基或6至10个碳原子的芳基，或 与氮一起形成可含有第二杂原子的5元或6元饱和环与式III CX4（III）的四卤化碳反应，得到式IV的亚铵盐（IV） ），然后水解亚胺盐; 和式IV的新型亚胺盐。

    Preparation of 3,3-dimethyl-pent-4-enoic acid amides
    23.
    发明授权
    Preparation of 3,3-dimethyl-pent-4-enoic acid amides 失效
    制备3,3-二甲基 - 戊-4-烯酸酰胺

    公开(公告)号：US4302584A

    公开(公告)日：1981-11-24

    申请号：US175939

    申请日：1980-08-07

    申请人： Klaus Halbritter

    发明人： Klaus Halbritter

    IPC分类号： C07C231/00 ,  C07C67/00 ,  C07C231/14 ,  C07C233/09 ,  C07C233/12 ,  C07C102/00 ,  C07D295/10

    CPC分类号： C07C233/12

    摘要： A process for the preparation of 3,3-dimethyl-pent-3-enoic acid amides of the formula I ##STR1## where R.sup.1 and R.sup.2 may be identical or different and each is alkyl of 1 to 4 carbon atoms, or R.sup.1 and R.sup.2 together with the nitrogen on which they are present as substituents form a 5-membered or 6-membered saturated ring which may contain a further hetero-atom,wherein an acetamido-acetal or ketene-acetal-aminal is reacted with 3-methyl-but-2-en-1-ol at from 80.degree. to 220.degree. C., in the presence or absence of an inert organic solvent. The products are valuable intermediates for the preparation of insecticidal cyclopropanecarboxylic acid esters.

    摘要翻译： 制备式I的3,3-二甲基 - 戊-3-烯酸酰胺的方法，其中R 1和R 2可以相同或不同，并且各自为1至4个碳原子的烷基，或者R 1和 R2与它们作为取代基存在的氮一起形成可含有另外的杂原子的5元或6元饱和环，其中乙酰氨基 - 缩醛或乙烯酮缩醛 - 氨基与3-甲基 - 丁-2-烯-1-醇在80℃至220℃下，在惰性有机溶剂存在或不存在下进行。 该产品是制备杀虫环丙烷羧酸酯的有价值的中间体。

    Preparation of 4-methyl-5-[(2-aminoethyl)-thiomethyl]-imidazole dihydrochloride
    24.
    发明授权
    Preparation of 4-methyl-5-[(2-aminoethyl)-thiomethyl]-imidazole dihydrochloride 失效
    4-甲基-5 - [（2-氨基乙基）硫甲基] - 咪唑二盐酸盐的制备

    公开(公告)号：US4189592A

    公开(公告)日：1980-02-19

    申请号：US007005

    申请日：1979-01-26

    申请人： Klaus Halbritter

    发明人： Klaus Halbritter

    IPC分类号： C07D233/54 ,  C07D233/64

    CPC分类号： C07D233/64

    摘要： 4-Methyl-5-[(2-aminoethyl)-thiomethyl]-imidazole dihydrochloride is prepared in a single-step process by thiomethylating 4-methylimidazole. The product is an intermediate for other imidazole derivatives, especially the drug cimetidine.

    摘要翻译： 4-甲基-5 - [（2-氨基乙基） - 硫代甲基] - 咪唑二盐酸盐是通过4-甲基咪唑的甲基化进行的一步法制备的。 该产品是其他咪唑衍生物，特别是药物西咪替丁的中间体。

    Manufacture of .alpha.-naphthol
    25.
    发明授权
    Manufacture of .alpha.-naphthol 失效
    制造{60-萘酚

    公开(公告)号：US4171458A

    公开(公告)日：1979-10-16

    申请号：US876759

    申请日：1978-02-10

    申请人： Ludwig Schuster ,  Eckhard Hickmann ,  Klaus Halbritter

    发明人： Ludwig Schuster ,  Eckhard Hickmann ,  Klaus Halbritter

    IPC分类号： C07C37/055 ,  C07C37/76 ,  C07C39/14

    CPC分类号： C07C37/76 ,  C07C37/0555

    摘要： Process for the manufacture of .alpha.-naphthol by hydrolyzing .alpha.-naphthyl esters of aliphatic carboxylic acids in a distillation column by means of steam in counter-current at a particular temperature, and in a certain ratio, in the presence of naphtholsulfonic acids and/or sulfonic acids of naphthyl esters. The .alpha.-naphthol obtainable by the process of the invention is a valuable starting material for the manufacture of dyes, drugs and insecticides, e.g. .alpha.-naphthyl N-methylcarbamate.

    摘要翻译： 通过在特定温度下以一定比例的蒸汽在蒸馏塔中水解脂肪族羧酸的α-萘基酯，并在一定比例的存在下，在萘酚磺酸和/或 萘酯的磺酸。 通过本发明的方法可获得的α-萘酚是用于制备染料，药物和杀虫剂的有价值的起始材料，例如， α-萘基N-甲基氨基甲酸酯。

    Method for hydrogenating benzene polycarboxylic acids or derivatives thereof by using a catalyst containing macropores
    27.
    发明授权
    Method for hydrogenating benzene polycarboxylic acids or derivatives thereof by using a catalyst containing macropores 有权

    公开(公告)号：US06284917B1

    公开(公告)日：2001-09-04

    申请号：US09581843

    申请日：2000-06-19

    申请人： Melanie Brunner ,  Arnd Böttcher ,  Boris Breitscheidel ,  Klaus Halbritter ,  Jochem Henkelmann ,  Lucien Thil ,  Rolf Pinkos

    发明人： Melanie Brunner ,  Arnd Böttcher ,  Boris Breitscheidel ,  Klaus Halbritter ,  Jochem Henkelmann ,  Lucien Thil ,  Rolf Pinkos

    IPC分类号： C07C6974

    CPC分类号： C08K5/12 ,  C07C51/36 ,  C07C67/303 ,  C07C69/75 ,  C07C2601/14 ,  C07C61/09

    摘要： A process for hydrogenating a benzenepolycarboxylic acid or a derivative thereof or a mixture of two or more thereof by bringing the benzenepolycarboxylic acid or the derivative thereof or the mixture of two or more thereof into contact with a hydrogen-containing gas is carried out in the presence of a catalyst which comprises as active metal at least one metal of transition group VIII of the Periodic Table alone or together with at least one metal of transition group I or VII of the periodic table applied to a support which contains macropores with the proviso that if dimethyl terephthalate is hydrogenated, the hydrogenation using a catalyst which comprises as active metal ruthenium either alone or together with at least one metal of transition group I, VII or VIII of the Periodic Table applied to a support, where the support has a mean pore diameter of at least 50 nm and a BET surface area of at most 30 m2/g and the amount of the active metal is from 0.01 to 30% by weight, based on the total weight of the catalyst, and the ratio of the surface areas of the active metal and the catalyst support is less than 0.05, and/or a catalyst which comprises as active metal ruthenium either alone or together with at least one metal of transition group I, VII or VIII of the Periodic Table in an amount of from 0.01 to 30% by weight, based on the total weight of the catalyst, applied to a support, where from 10 to 50% of the pore volume of the support is formed by macropores having a pore diameter in the range from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support is formed by mesopores having a pore diameter in the range from 2 to 50 nm, where the sum of the pore volumes adds up to 100%, is excluded, and novel hydrogenation products, obtainable by hydrogenating benzenepolycarboxylic acid (derivatives) as well as their use as plasticizers in plastics.