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    Use of isomerically pure or highly isomer-enriched cis- or trans-(2-isobutyl-4-methyl-tetrahydropyran-4-yl)acetate
    6.
    发明授权
    Use of isomerically pure or highly isomer-enriched cis- or trans-(2-isobutyl-4-methyl-tetrahydropyran-4-yl)acetate 有权

    公开(公告)号：US10160931B2

    公开(公告)日：2018-12-25

    申请号：US15514101

    申请日：2015-09-25

    Applicant: BASF SE

    Inventor： Timon Stork ,  Stefan Rüdenauer ,  Margarethe Klos ,  Ralf Pelzer ,  Wolfgang Krause

    IPC: C11B9/00 ,  C07D309/10 ,  A23L27/20

    Abstract: The present invention relates to the use of isomerically pure or highly isomerically enriched cis- or trans-(2-isobutyl-4-methyltetrahydropyran-4-yl) acetate for use as aroma chemicals. The invention further relates to a process for the preparation of isomerically pure or highly isomerically enriched cis- or trans-(2-isobutyl-4-methyltetrahydropyran-4-yl) acetate and the products obtainable by this process. The invention further relates to a fragrance or aroma substance composition which comprises isomerically pure or highly isomerically enriched cis- or trans-(2-isobutyl-4-methyltetra-hydropyran-4-yl) acetate, a method for imparting, and/or boosting an odor or taste of a product, and also perfumed or aromatized products which comprise isomerically pure or highly isomerically enriched cis- or trans-(2-isobutyl-4-methyltetrahydropyran-4-yl) acetate.

    Process for the preparation of 2 substituted tetrahydropyranols
    7.
    发明授权
    Process for the preparation of 2 substituted tetrahydropyranols 有权
    制备2取代四氢吡喃醇的方法

    公开(公告)号：US09428481B2

    公开(公告)日：2016-08-30

    申请号：US14242956

    申请日：2014-04-02

    Applicant: BASF SE

    Inventor： Gabriele Gralla ,  Ralf Pelzer

    IPC: C07D309/10

    CPC classification number: C07D309/10 ,  Y02P20/582

    Abstract: The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding alkenealdehydes in the presence of a strongly acidic ion exchanger with subsequent hydrogenation. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with prenal, with subsequent hydrogenation.

    Abstract translation: 本发明涉及通过在强酸性离子交换剂存在下使3-甲基丁-3-烯-1-醇（异戊二醇）与相应的烯醛反应来制备2-取代的4-羟基-4-甲基四氢吡喃的方法 随后进行氢化。 具体地，本发明涉及通过使异戊二烯与前体反应制备2-异丁基-4-羟基-4-甲基四氢吡喃的相应方法，随后进行氢化。

    Bi- and tricyclic compounds for use as aroma chemicals
    9.
    发明授权
    Bi- and tricyclic compounds for use as aroma chemicals 有权

    公开(公告)号：US12234206B2

    公开(公告)日：2025-02-25

    申请号：US17414666

    申请日：2019-12-17

    Applicant: BASF SE ,  P2 Science Inc.

    Inventor： Ralf Pelzer ,  Yonghua Yang ,  Patrick Foley

    IPC: C07C49/323 ,  C07C49/553

    Abstract: The present invention relates to bi- and tricyclic compounds of the general formula (I) (I) wherein the dashed lines independently of each other represent a single or a double bond, X represents a group of the formulae X1 to X3 wherein the asterisk denotes the point of attachment to the rest of the molecule, R1a and R1b, independently of each other, are selected from hydrogen or methyl, or R1a together with R1b form a methylene or ethylene group, R2, R3a, R3b, R4, R5a and R5b, independently of each other, are selected from hydrogen or methyl, R6 is selected from hydrogen, methyl or ethyl, and R7 is methyl or ethyl, to a method of preparing said compounds, to the use of a bi- or tricyclic compounds or of mixtures of two or more bi- and tricyclic compounds or of a stereoisomer thereof or of a mixture of two or more stereoisomers thereof as aroma chemicals; to the use of a bi- or tricyclic compound for modifying the scent character of a fragranced composition; to an aroma chemical composition containing a bi- or tricyclic compound or a mixture of two or more bi- and tricyclic compounds or of a stereoisomer thereof or of a mixture of two or more stereoisomers thereof; and to a method of preparing a fragranced composition or for modifying the scent character of a fragranced composition, comprising incorporating a bi- or tricyclic compound or a mixture of two or more bi- and tricyclic compounds or of a stereoisomer thereof or of a mixture of two or more stereoisomers thereof into said composition.

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