Process for obtaining fragrant ketone
    1.
    发明授权
    Process for obtaining fragrant ketone 失效
    获得香酮的方法

    公开(公告)号:US06423874B1

    公开(公告)日:2002-07-23

    申请号:US09506984

    申请日:2000-02-18

    IPC分类号: C07C4567

    摘要: A process for obtaining Ketone of formula 1a,b, which includes contacting a Ketone represented by formula 2a,b with a first catalyst under conditions and for a time sufficient to obtain an intermediate mixture, which intermediate mixture contains a Ketone represented by formula 4a,b; and contacting the intermediate mixture, or a fraction thereof, with a second catalyst under conditions effective to provide a product containing a Ketone of formula 1a,b. Moreover, the first catalyst preferably differs from the second catalyst with the first catalyst preferably being an isomerization catalyst and the second catalyst being a cyclization catalyst. The process is capable of providing unexpectedly incresased yields of both Ketone 4 and Ketone 1.

    摘要翻译: 一种获得式1a,b的酮的方法,其包括使式2a,b表示的酮与第一催化剂在足以获得中间体混合物的条件和时间下接触,该中间体混合物含有由式4a表示的酮, b; 在有效提供含有式1a的酮的产物的条件下,将中间体混合物或其一部分与第二催化剂接触,b。 此外,第一催化剂优选不同于第二催化剂,第一催化剂优选为异构化催化剂,第二催化剂为环化催化剂。 该方法能够预期提高酮酮4和酮1的收率。

    Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-one(&bgr;-isophorone)
    2.
    发明授权
    Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-one(&bgr;-isophorone) 失效
    用于制造3,5,5-三甲基环己-3-烯(β-异佛尔酮)的连续方法

    公开(公告)号:US06274772B1

    公开(公告)日:2001-08-14

    申请号:US09598485

    申请日:2000-06-22

    IPC分类号: C07C4567

    摘要: This invention relates to a continuous process for the manufacture of &bgr;-isophorone by isomerization under homogeneous catalysis of &agr;-isophorone. The process consists of introducing &agr;-isophorone and a solution of an alkaline hydroxide into a reaction region at a temperature ranging from 150° C. to 216° C., simultaneously removing by distillation a fraction comprising an amount by weight of &bgr;-isophorone ranging from 30% to 90%, drawing off the heavy products and then rectifying the fraction removed from the reaction mixture by distillation.

    摘要翻译: 本发明涉及在α-异佛尔酮的均相催化下通过异构化生产β-异佛尔酮的连续方法。 该方法包括在150℃至216℃的温度范围内将α-异佛尔酮和碱性氢氧化物溶液引入反应区域,同时通过蒸馏除去包含重量百分比的β-异佛尔酮的馏分 从30%到90%,抽出重产物,然后通过蒸馏精馏从反应混合物中除去的馏分。

    Process for hydrogenation of isoalpha acids
    3.
    发明授权
    Process for hydrogenation of isoalpha acids 有权
    异磷酸氢化方法

    公开(公告)号:US06198004B1

    公开(公告)日:2001-03-06

    申请号:US09329299

    申请日:1999-06-10

    IPC分类号: C07C4567

    摘要: The invention relates to a process for converting alpha acid and isoalpha acids to tetrahydroisoalpha acid. The process comprises isomerizing an alpha acid to produce isoalpha acid and hydrogenating the isoalpha acid in the presence of a noble metal catalyst wherein, the noble metal catalyst is added incrementally or continuously throughout the hydrogenation step. The invention also relates to tetrahydroisoalpha acids made by the above process.

    摘要翻译: 本发明涉及将α-酸和异α-酸转化为四氢异α酸的方法。 该方法包括异构化α酸以产生异α酸并在贵金属催化剂存在下氢化异α酸,其中贵金属催化剂在整个氢化步骤中逐渐或连续地加入。 本发明还涉及通过上述方法制备的四氢异构酸。

    Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-1-one (B-isophorone)
    4.
    发明授权
    Continuous process for the manufacture of 3,5,5-trimethylcyclohexa-3-en-1-one (B-isophorone) 失效
    用于制造3,5,5-三甲基环己-3-烯-1-酮(B-异佛尔酮)的连续方法

    公开(公告)号:US06274771B1

    公开(公告)日:2001-08-14

    申请号:US09598484

    申请日:2000-06-22

    IPC分类号: C07C4567

    摘要: For the continuous manufacture of &bgr;-isophorone by isomerization under homogeneous catalysis of &agr;-isophorone, the steps of introducing the &agr;-isophorone and a solution of an alkaline hydroxide into a reaction region, bringing the reaction mixture to reflux at a temperature at least equal to 150° C. under a equal P1 of less than or equal to atmospheric pressure, continuously and simultaneously removing from the reaction mixture: &bgr;-isophorone vapor, by distillation under a pressure P2 less than P1 and at a temperature at most equal to 150° C., and heavy products, at a rate, so that their content by weight is at most equal to 7% in the reaction mixture, and continuous returning the distillation to the reaction region.

    摘要翻译: 对于在α-异佛尔酮的均相催化下通过异构化连续制造β-异佛尔酮的步骤,将α-异佛尔酮和碱性氢氧化物溶液引入反应区域,使反应混合物在至少相等的温度下回流 在小于或等于大气压的相等的P1下,连续并同时地从反应混合物中除去β-异佛尔酮蒸气:在小于P1的压力P2和在至多等于150的温度下蒸馏 °C和重质产物,使其在反应混合物中的重量含量至多等于7%,并将蒸馏物连续返回到反应区域。

    Production process of cyclohexenyl ketones
    6.
    发明授权
    Production process of cyclohexenyl ketones 失效
    环己烯酮的生产工艺

    公开(公告)号:US06822121B2

    公开(公告)日:2004-11-23

    申请号:US09875158

    申请日:2001-06-07

    IPC分类号: C07C4567

    摘要: An economical process for producing (2- and/or 1-)cyclohexenyl methyl ketones which are intermediates for the synthesis of &agr;- or &bgr;-damascone. In the presence of a catalyst, a 3-cyclohexenyl methyl ketone represented by the following formula (1a): wherein, R1, R2 and R3 each independently represents a hydrogen atom or a methyl group and at least two of R1, R2 and R3 are methyl groups, is isomerized.

    摘要翻译: 用于生产(2-和/或1-)环己烯基甲基酮的经济方法,其是用于合成α-大脑皮质或大黄酮的中间体。 在催化剂存在下,由下式(1a)表示的3-环己烯基甲基酮:其中,R 1,R 2和R 3各自独立地表示氢原子或甲基,R 1,R 2和R 3中的至少两个为 甲基,异构化。