Process for the manufacture of 3,7-dimethyl-1-octen-3-ol
    7.
    发明授权
    Process for the manufacture of 3,7-dimethyl-1-octen-3-ol 有权
    3,7-二甲基-1-辛烯-3-醇的制备方法

    公开(公告)号:US08546621B2

    公开(公告)日:2013-10-01

    申请号:US13216657

    申请日:2011-08-24

    摘要: The present invention is directed to a process for the manufacture of 3,7-dimethyl-1-octen-3-ol comprising the following steps: a) hydrogenation of 6-methyl-5-hepten-2-on to 6-methyl-2-heptanon in the presence of hydrogen and a palladium containing catalyst on a carrier selected from the group consisting of carbon, calcium carbonate and aluminum oxide. b) reaction of 6-methyl-2-heptanon with acetylene to 3,7-dimethyl-1-octin-3-ol in the presence of ammonia and potassium hydroxide and in the absence of any additional organic solvent; c) hydrogenation of 3,7-dimethyl-1-octin-3-ol to 3,7-dimethyl-1-octen-3-ol in the presence of hydrogen and a palladium containing catalyst on a carrier selected from the group consisting of calcium carbonate, aluminum oxide, silica, porous glass, carbon or graphite, and barium sulphate, with the proviso that the catalyst additionally contains lead when the carrier is calcium carbonate. The present invention is further directed to a process for the manufacture of isophytol and vitamin E, where a thus produced 3,7-dimethyl-1-octen-3-ol is used as starting material.

    摘要翻译: 本发明涉及制备3,7-二甲基-1-辛烯-3-醇的方法,包括以下步骤:a)将6-甲基-5-庚烯-2-酮氢化成6-甲基-1-辛烯-3-醇, 在氢气和含钯催化剂的存在下,在选自碳,碳酸钙和氧化铝的载体上存在2-庚酮。 b)在氨和氢氧化钾存在下,在不存在任何另外的有机溶剂的情况下,将6-甲基-2-庚酮与乙炔反应至3,7-二甲基-1-辛烯-3-醇; c)在氢和含钯催化剂存在下,在选自以下的载体上,将3,7-二甲基-1-辛烯-3-醇氢化为3,7-二甲基-1-辛烯-3-醇: 碳酸钙,氧化铝,二氧化硅,多孔玻璃,碳或石墨和硫酸钡,条件是当载体是碳酸钙时,催化剂另外含有铅。 本发明进一步涉及一种制造异生醇和维生素E的方法,其中将如此制备的3,7-二甲基-1-辛烯-3-醇用作原料。

    PROCESS FOR THE MANUFACTURE OF TMHQ
    9.
    发明申请
    PROCESS FOR THE MANUFACTURE OF TMHQ 有权
    TMHQ制造流程

    公开(公告)号:US20130211080A1

    公开(公告)日:2013-08-15

    申请号:US13817012

    申请日:2011-08-25

    摘要: The present invention is directed to a process for the manufacture of 2,3,5-trimethyl-hydro-p-benzoquinone comprising the following steps: a) hydrogenating 2,6-dimethyl-p-benzoquinone with hydrogen in the presence of a hydrogenation catalyst in an organic solvent to obtain 2,6-dimethyl-hydro-p-benzoquinone; b) reacting 2,6-dimethyl-hydro-p-benzoquinone with a secondary amine and formal-dehyde in an organic solvent to obtain 2,6-dimethyl-3-(N,N-disubstituted aminomethyl)-hydro-p-benzoquinone; c) reacting 2,6-dimethyl-3-(N,N-disubstituted aminomethyl)-hydro-p-benzoquinone with hydrogen in the presence of a hydrogenolysis catalyst in an organic solvent to obtain 2,3,5-trimethylhydro-p-benzoquinone; wherein the organic solvent in all steps a), b) and c) is independently selected from the group consisting of methyl tert.-butyl ether, ethyl tert.-butyl ether, tert.-amyl ether, methoxycyclopentane and any mixtures thereof. Preferably the organic solvent used in all steps a), b) and c) is the same.

    摘要翻译: 本发明涉及一种制备2,3,5-三甲基 - 氢 - 对苯醌的方法,包括以下步骤:a)在氢化存在下用氢气氢化2,6-二甲基对苯醌 催化剂在有机溶剂中得到2,6-二甲基 - 氢 - 对苯醌; b)使2,6-二甲基 - 对苯醌与仲胺和正型脱水在有机溶剂中反应,得到2,6-二甲基-3-(N,N-二取代氨基甲基) - 氢对苯醌 ; c)在氢解催化剂存在下,在有机溶剂中使2,6-二甲基-3-(N,N-二取代氨基甲基) - 氢对苯醌与氢气反应,得到2,3,5-三甲基氢对 - 苯醌 其中所有步骤a),b)和c)中的有机溶剂独立地选自甲基叔丁基醚,乙基叔丁基醚,叔戊基醚,甲氧基环戊烷及其任何混合物。 在所有步骤a),b)和c)中使用的有机溶剂优选是相同的。

    ISOMERIZATION OF BETA-KETO-ALLENES
    10.
    发明申请
    ISOMERIZATION OF BETA-KETO-ALLENES 有权
    BETA-KETO-ALLENES的异构体

    公开(公告)号:US20130197272A1

    公开(公告)日:2013-08-01

    申请号:US13642047

    申请日:2011-04-18

    IPC分类号: C07C45/67

    摘要: Isomerization of β-keto-allenes of the general formula I wherein R1 is hydrogen, methyl or ethyl, in particular hydrogen or methyl; R2 is hydrogen or methyl; R3 is hydrogen or methyl, in particular methyl and R4 is an aliphatic hydrocarbon residue containing 1-37 carbon atoms, into corresponding α,γ-dienones of formula II by treatment with a basic ion exchange resin.

    摘要翻译: 其中R 1是氢,甲基或乙基,特别是氢或甲基的通式I的β-酮 - 双烯异构化; R2是氢或甲基; R3是氢或甲基,特别是甲基,R4是含有1-37个碳原子的脂族烃残基,通过用碱性离子交换树脂处理,转化为相应的式II的α,γ-二烯酮。