PROCESS FOR PREPARING KETONES, IN PARTICULAR MACROCYCLIC KETONES
    5.
    发明申请
    PROCESS FOR PREPARING KETONES, IN PARTICULAR MACROCYCLIC KETONES 有权
    用于制备克隆的方法,特别是大麻酮

    公开(公告)号:US20120088935A1

    公开(公告)日:2012-04-12

    申请号:US13269016

    申请日:2011-10-07

    IPC分类号: C07C45/29

    摘要: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

    摘要翻译: 式II的酮,其中A任选为烷基取代的C 2 -C 12 - 烷二基,R 1和R 2各自彼此独立地为C 1 -C 6 - 烷基,或者R 1和R 2一起形成烷基取代的C 3 -C 10 - 烷二基 R 3是氢或C 1 -C 6烷基,是通过使式I的环状烯与一氧化二氮反应形成式II的酮制备的。 式II的酮可以进一步氢化以形成式III的饱和酮。 式III的大环酮,例如 肌肉,被追捧为香水。

    Process for preparing ketones, in particular macrocyclic ketones
    6.
    发明授权
    Process for preparing ketones, in particular macrocyclic ketones 有权
    制备酮的方法,特别是大环酮

    公开(公告)号:US08563781B2

    公开(公告)日:2013-10-22

    申请号:US13269016

    申请日:2011-10-07

    IPC分类号: C07C45/27

    摘要: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

    摘要翻译: 式II的酮,其中A任选为烷基取代的C 2 -C 12 - 烷二基,R 1和R 2各自彼此独立地为C 1 -C 6 - 烷基,或者R 1和R 2一起形成烷基取代的C 3 -C 10 - 烷二基 R 3是氢或C 1 -C 6烷基,是通过使式I的环状烯与一氧化二氮反应形成式II的酮制备的。 式II的酮可以进一步氢化以形成式III的饱和酮。 式III的大环酮,例如 肌肉,被追捧为香水。

    Process for preparing M- or P-substituted phenylalkanols by alkylation
    9.
    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

    IPC分类号: C07C45/29 C07C29/32

    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
    10.
    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

    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。