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22 条记录 (耗时 0.033 秒)

    Process for the preparation of &agr;-diketones from ketols or ketals from ketols
    12.
    发明授权
    Process for the preparation of &agr;-diketones from ketols or ketals from ketols 失效
    从酮基酮或酮缩酮制备α-二酮的方法

    公开(公告)号：US06316676B1

    公开(公告)日：2001-11-13

    申请号：US09794075

    申请日：2001-02-28

    申请人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    发明人： Werner Aquila ,  Jörg Botzem ,  Melanie Brunner ,  Hartwig Fuchs ,  Wolfgang Krause ,  Klaus Pandl ,  Ulrich Schäfer-Lüderssen

    IPC分类号： C07C4529

    CPC分类号： C07C45/39 ,  C07C45/515 ,  C07C49/12 ,  C07C49/175 ,  C07C49/517

    摘要： The process for the preparation of carbonyl compounds of the formula I where R1 and R2 are a hydrocarbon radical, or R1 and R2 together are an unsubstituted or substituted alkylene group, and X is ═O or two alkoxy groups, comprises oxidizing alcohols of the formula II  where R1 to R2 and X are as defined above, with oxygen in the gaseous phase a) at temperatures of from 270 to 600° C. on silver coated catalysts which comprise an abrasion-resistant coating of metallic silver on a core of inert support material, or b) at temperatures of from 450 to 750° C. on silver crystals and/or copper crystals having a particle size of from 0.1 to 2.5 mm for a residence time of at most 0.1 second. Also claimed is an advantageous overall process for the preparation of &agr;-diketones, preferably diacetal, from the corresponding ketone, in particular methyl ethyl ketone, via the carbonyl compounds of the formula I where X is two alkoxy groups.

    摘要翻译： 制备式I其中R 1和R 2的羰基化合物的方法是烃基，或者R 1和R 2一起是未取代或取代的亚烷基，并且X是= O或两个烷氧基，包括将式II的氧化醇，其中R 1 在含有惰性载体材料芯上的金属银的耐磨涂层的银涂覆的催化剂上，在温度为270-600℃的温度下，R2和X如上定义，在气相中为氧） 在450至750℃的温度下，在银晶体和/或具有0.1至2.5mm的粒度的铜晶体上，停留时间至多为0.1秒。还要求保护的是制备α 二酮，优选二缩醛，通过其中X是两个烷氧基的式I的羰基化合物从相应的酮，特别是甲基乙基酮中获得。

    Method for producing M-substituted phenylalkanols by means of isomerization
    13.
    发明授权
    Method for producing M-substituted phenylalkanols by means of isomerization 失效
    通过异构化制备M取代的苯基链烷醇的方法

    公开(公告)号：US08686193B2

    公开(公告)日：2014-04-01

    申请号：US13503488

    申请日：2010-10-19

    申请人： Andreas Lanver ,  Klaus Ebel ,  Karl Beck ,  Ralf Pelzer ,  Jörg Botzem ,  Ulrich Griesbach

    发明人： Andreas Lanver ,  Klaus Ebel ,  Karl Beck ,  Ralf Pelzer ,  Jörg Botzem ,  Ulrich Griesbach

    IPC分类号： C07C45/51 ,  C07C29/56 ,  C07C47/22 ,  A61K8/18

    CPC分类号： C07C29/56 ,  C07C45/29 ,  C11B9/0061 ,  C07C33/20 ,  C07C47/228

    摘要： The invention relates to a process for the preparation of m-substituted phenylalkanols of the formula (I) in which R1 is C1-C5-alkyl and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein a p-substituted phenylalkanol of the formula (II) in which R1, R2, R3, R4 and R5 having the meanings given under formula (I), is isomerized in the presence of a Friedel-Crafts catalyst to give an m-substituted phenylalkanol of the formula (I). From the m-substituted phenylalkanols of the formula (I) it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which are known as fragrances and aroma chemicals.

    摘要翻译： 本发明涉及一种制备式（I）的间位取代的苯基烷醇的方法，其中R 1为C 1 -C 5 - 烷基且R 2，R 3，R 4和R 5彼此独立地为氢或甲基，其中a 式（II）的对取代的苯基链烷醇，其中具有式（I）给出的含义的R 1，R 2，R 3，R 4和R 5在Friedel-Crafts催化剂存在下异构化得到m-取代的苯基烷醇 式（I）。 从式（I）的间位取代的苯基烷醇可以通过氧化或脱氢形成作为有价值的产物，相应的醛被称为香料和芳香化学品。

    METHOD FOR PRODUCING 2-SUBSTITUTED TETRAHYDROPYRANOLS
    14.
    发明申请
    METHOD FOR PRODUCING 2-SUBSTITUTED TETRAHYDROPYRANOLS 有权
    生产2-取代的四氢呋喃的方法

    公开(公告)号：US20120059177A1

    公开(公告)日：2012-03-08

    申请号：US13321417

    申请日：2010-05-11

    申请人： Gabriele Gralla ,  Ralf Pelzer ,  Klaus Ebel ,  Ulrich Griesbach ,  Jörg Botzem

    发明人： Gabriele Gralla ,  Ralf Pelzer ,  Klaus Ebel ,  Ulrich Griesbach ,  Jörg Botzem

    IPC分类号： C07D309/10

    CPC分类号： C07D309/12

    摘要： The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.

    摘要翻译： 本发明涉及通过使3-甲基丁-3-烯-1-醇（异戊二烯）与相应的醛在强酸性阳离子交换剂存在下反应制备2-取代的4-羟基-4-甲基四氢吡喃醇的方法 。 具体地说，本发明涉及通过异戊二烯与异戊醛反应制备2-异丁基-4-羟基-4-甲基四氢吡喃的相应方法。

    Preparation of diacetals of glyoxal
    15.
    发明授权
    Preparation of diacetals of glyoxal 失效
    乙二醛二缩醛的制备

    公开(公告)号：US06713656B2

    公开(公告)日：2004-03-30

    申请号：US10262980

    申请日：2002-10-03

    申请人： Gunnar Heydrich ,  Nicola Christiane Aust ,  Hermann Pütter ,  Andreas Fischer ,  Jörg Botzem

    发明人： Gunnar Heydrich ,  Nicola Christiane Aust ,  Hermann Pütter ,  Andreas Fischer ,  Jörg Botzem

    IPC分类号： C07C4330

    CPC分类号： C07C41/56 ,  C07C43/303 ,  C07C47/198

    摘要： A process is described for preparing diacetals of glyoxal by reacting from 40 to 75% by weight aqueous glyoxal with monohydric alcohols in the presence of an acid catalyst, which comprises leaving a liquid mixture which, at the beginning of the reaction, comprises alcohol and glyoxal in a molar ratio of at least 15:1 and also water in a concentration of not more than 8% by weight in contact with the acid catalyst until concentration in the reaction mixture of the diacetal formed reaches at least 70% of the equilibrium concentration without more than 5% by weight of the alcohol used having already been distilled off.

    摘要翻译： 描述了一种通过在酸催化剂的存在下使40至75重量％的乙二醛与一元醇反应来制备乙二醛的二缩醛的方法，其包括在反应开始时包含醇和乙二醛的液体混合物 至少15:1的摩尔比和与酸催化剂接触的浓度不超过8重量％的水，直到形成的二缩醛的反应混合物中的浓度达到平衡浓度的至少70％而没有 超过5％（重量）所用的醇已被蒸馏掉。

    Process for preparing M- or P-substituted phenylalkanols by alkylation
    16.
    发明授权
    Process for preparing M- or P-substituted phenylalkanols by alkylation 有权
    通过烷基化制备M-或P-取代的苯基链烷醇的方法

    公开(公告)号：US08692025B2

    公开(公告)日：2014-04-08

    申请号：US13503515

    申请日：2010-10-14

    申请人： Andreas Lanver ,  Klaus Ebel ,  Karl Beck ,  Ralf Pelzer ,  Jörg Botzem ,  Ulrich Griesbach

    发明人： Andreas Lanver ,  Klaus Ebel ,  Karl Beck ,  Ralf Pelzer ,  Jörg Botzem ,  Ulrich Griesbach

    IPC分类号： C07C45/29 ,  C07C29/32

    CPC分类号： C07C29/32 ,  C07C29/56 ,  C07C45/29 ,  C07C33/20 ,  C07C47/228

    摘要： The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which R1 is bonded to the phenyl ring in the m- or p-position and is C1-C5-alkyl, and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R2, R3, R4 and R5 have the meanings given under formula (I) is alkylated together with a C1-C5-alkyl halide of the formula (III) R1-Hal  (III), in which R1 has the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol. From the m- or p-alkyl-substituted phenylalkanols of the formula (I), it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which play an interesting role as fragrances and aroma chemicals.

    摘要翻译： 本发明涉及一种制备式（I）的间 - 或对 - 取代的苯烷醇的方法，其中R 1与m-或p-位上的苯环键合并且是C1-C5-烷基，R2 R 3，R 4和R 5彼此独立地为氢或甲基，其中R 2，R 3，R 4和R 5具有式（I）所示含义的式（II）的未取代的苯基烷醇与 其中R 1具有式（I）所示含义，Hal为卤素的式（III）R1-Hal（Ⅲ）的C1-C5烷基卤化物，在Friedel-Crafts催化剂存在下，得到m- 或式（I）的对烷基取代的苯基链烷醇，然后将反应混合物处理并分离所需的式（I）的间 - 或对 - 烷基取代的苯基烷醇，另一个形成的副产物 返回到反应混合物中，并将它们在Friedel-Crafts催化剂存在下异构化，得到所需的间 - 或对 - 烷基取代的苯基 kanol 从式（I）的间 - 或对 - 烷基取代的苯烷醇，可以通过氧化或脱氢形成作为有价值的产物，相应的醛作为香料和香气化学品起着重要的作用。

    Method for producing 2-substituted tetrahydropyranols
    18.
    发明授权
    Method for producing 2-substituted tetrahydropyranols 有权
    2-取代四氢吡喃醇的制备方法

    公开(公告)号：US08618315B2

    公开(公告)日：2013-12-31

    申请号：US13321417

    申请日：2010-05-11

    申请人： Gabriele Gralla ,  Ralf Pelzer ,  Klaus Ebel ,  Ulrich Griesbach ,  Jörg Botzem

    发明人： Gabriele Gralla ,  Ralf Pelzer ,  Klaus Ebel ,  Ulrich Griesbach ,  Jörg Botzem

    IPC分类号： C07D309/10

    CPC分类号： C07D309/12

    摘要： The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.

    摘要翻译： 本发明涉及通过使3-甲基丁-3-烯-1-醇（异戊二烯）与相应的醛在强酸性阳离子交换剂存在下反应制备2-取代的4-羟基-4-甲基四氢吡喃醇的方法 。 具体地说，本发明涉及通过异戊二烯与异戊醛反应制备2-异丁基-4-羟基-4-甲基四氢吡喃的相应方法。