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    Process for preparing M- or P-substituted phenylalkanols by alkylation
    1.
    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
    3.
    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。

    Fragrance Compositions Comprising Special Mixtures of Diastereomers of 2-Isobutyl-4-Methyl-Tetrahydro-2H-Pyran-4-OL
    4.
    发明申请
    Fragrance Compositions Comprising Special Mixtures of Diastereomers of 2-Isobutyl-4-Methyl-Tetrahydro-2H-Pyran-4-OL 审中-公开
    包含2-异丁基-4-甲基 - 四氢-2H-吡喃-4-醇的非对映异构体的特殊混合物的香料组合物

    公开(公告)号：US20130230476A1

    公开(公告)日：2013-09-05

    申请号：US13884503

    申请日：2011-11-08

    申请人： Ralf Pelzer ,  Wolfgang Krause ,  Karl Beck ,  Francis Bocris

    发明人： Ralf Pelzer ,  Wolfgang Krause ,  Karl Beck ,  Francis Bocris

    IPC分类号： C11B9/00

    CPC分类号： C11B9/008

    摘要： The present invention relates to a fragrance composition comprising a mixture of diastereomers of 2-isobutyl-4-methyl-tetrahydro-2H-pyran-4-ol, which comprises more than 95 wt. % of the optically inactive cis-racemate and less than 5 wt. % of the optically inactive trans-racemate. The present invention further relates to a method for producing a perfumed product or article as well as perfumed or aromatized articles comprising the fragrance compositions of the present invention.

    摘要翻译： 本发明涉及包含2-异丁基-4-甲基 - 四氢-2H-吡喃-4-醇的非对映异构体的混合物的香料组合物，其包含大于95wt。 ％的光学活性的顺式外消旋物和小于5wt。 ％的光学无活性反式外消旋物。 本发明还涉及一种用于生产加香产品或制品的方法，以及包含本发明的香料组合物的加香或芳香化制品。