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16 条记录 (耗时 0.018 秒)

    Cycloheptenols and their derivatives, methods of making thereof, and utilization thereof as fragrances
    6.
    发明授权
    Cycloheptenols and their derivatives, methods of making thereof, and utilization thereof as fragrances 失效
    环庚烯醇及其衍生物，其制备方法和作为香料的利用

    公开(公告)号：US5892104A

    公开(公告)日：1999-04-06

    申请号：US799361

    申请日：1997-02-14

    申请人： Bernard J. Kane ,  Henri M. Hoffmann

    发明人： Bernard J. Kane ,  Henri M. Hoffmann

    IPC分类号： C07C35/20 ,  C07C69/013 ,  C07C69/02 ,  A61K7/46

    CPC分类号： C07C69/013 ,  C07C35/20

    摘要： This invention relates to a compound having the formula I: ##STR1## wherein n is an integer of from 0 to 1; when n is 1, one of dashed lines a and b is a single bond and the other of dashed lines a and b is a double bond, dashed line c is not present, and dashed line d is a single bond; when n is 0, dashed lines a, b, c and d are single bonds or one of dashed lines a and b is a single bond and the other of dashed lines a and b is a double bond, dashed line c is not present, and dashed line d is a double bond; R.sub.1, R.sub.2 and R.sub.3 are, independently, lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.6 ; and R.sub.4 is hydrogen, lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.5, or C(O)R.sub.5, wherein R.sub.5 is hydrogen or lower branched or straight chain alkyl, alkenyl or alkynyl of C.sub.1 -C.sub.4 ; wherein the sum of the carbon atoms in R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is less than or equal to eight carbon atoms. These compounds can be prepared by the cyclization of 1,1,3-trialkyl-1,6-heptadien-3-ols in the presence of an acid. The compounds of formula I are used as fragrance ingredients to confer, enhance, improve, or modify the aroma of a perfumery composition or an article.

    摘要翻译： 本发明涉及具有式I的化合物：其中n为0-1的整数; 当n为1时，虚线a和b之一为单键，虚线a和b中的另一个为双键，虚线c不存在，虚线d为单键; 当n为0时，虚线a，b，c和d为单键，虚线a和b之一为单键，虚线a和b为双键，虚线c不存在， 虚线d为双键; R1，R2和R3独立地为C1-C6的低级支链或直链烷基，烯基或炔基; 且R 4为氢，C 1 -C 5或C（O）R 5的低级支链或直链烷基，烯基或炔基，其中R 5为氢或C 1 -C 4的低级支链或直链烷基，烯基或炔基; 其中R1，R2，R3和R4中的碳原子之和小于或等于8个碳原子。 这些化合物可以通过在酸存在下环化1,1,3-三烷基-1,6-庚二烯-3-醇制备。 式I的化合物用作香料成分以赋予，增强，改善或改变香料组合物或制品的香气。

    Hydrogenation of cyclic unsaturated compounds
    9.
    发明授权
    Hydrogenation of cyclic unsaturated compounds 失效
    环状不饱和化合物的氢化

    公开(公告)号：US4058572A

    公开(公告)日：1977-11-15

    申请号：US574911

    申请日：1975-05-06

    申请人： Bernard J. Kane ,  Karen E. Irving ,  James O. Bledsoe, Jr. ,  Levy A. Canova

    发明人： Bernard J. Kane ,  Karen E. Irving ,  James O. Bledsoe, Jr. ,  Levy A. Canova

    IPC分类号： C07C35/06 ,  C07C29/00 ,  C07C35/08

    CPC分类号： C07C35/06

    摘要： In a process for hydrogenation, with elemental hydrogen gas in the presence of a hydrogenation catalyst, of a cyclic unsaturated compound having an hydroxyl group projecting from an asymmetric center of the ring and an olefinic carbon-to-carbon double bond which when saturated in the hydrogenation process creates an additional asymmetric center in the ring, the improvement for obtaining increased stereoselectivity by increasing the addition of said hydrogen to that side of the olefin bond on the same side of the compound molecule as said hydroxyl group, comprising: conducting said hydrogenation with a nickel hydrogenation catalyst that has a substantial fraction of its reactive surfaces inactivated.The invention is particularly applicable to the hydrogenation of d-trans-piperitol to d-isomenthol.

    摘要翻译： 在氢化催化剂的存在下，使用氢化催化剂中具有羟基的环状不饱和化合物在环的不对称中心突出的氢化方法和烯烃碳 - 碳双键，当在 氢化过程在环中产生另外的不对称中心，通过增加在所述羟基与化合物分子的同一侧向烯烃键的那一侧加入所述氢而获得增加的立体选择性的改进，包括：用所述羟基进行所述氢化 具有大部分反应性表面的镍氢化催化剂失活。