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    Route to alpha-tocopheryl alkanoates and percursors thereof
    4.
    发明申请
    Route to alpha-tocopheryl alkanoates and percursors thereof 失效
    连接到α-生育酚链烷酸酯及其阳离子

    公开(公告)号：US20070032667A1

    公开(公告)日：2007-02-08

    申请号：US10571261

    申请日：2004-09-02

    Applicant: Werner Bonrath ,  Manfred Breuninger ,  Gregroy Malaise ,  Thomas Netscher

    Inventor： Werner Bonrath ,  Manfred Breuninger ,  Gregroy Malaise ,  Thomas Netscher

    IPC: C07D311/02

    CPC classification number: C07C69/017 ,  C07C67/08 ,  C07C67/28 ,  C07C67/29 ,  C07C67/293 ,  C07C67/475 ,  C07C69/157 ,  C07D311/72 ,  C07C69/16 ,  C07C69/145 ,  C07C69/07 ,  C07C69/78 ,  C07C69/007

    Abstract: The present invention is concerned with a novel process for the manufacture of 4alkanoyloxy-2,3,5-trimethylphenyl (E/Z)-phytyl ethers, precursors of α-tocopheryl alkanoates, by cross-metathesis reaction of alkenyl ethers of 1-alkanoyloxy-2,3,6-trimethylhydroquinone with 2,6,10,14-tetramethylpentadecene or a phytol derivative, e.g. an ester, an ether or a silyl ether, in the presence of a cross-metathesis catalyst. As the crossmetathesis catalyst especially ruthenium metal carbene complexes are suitable which possess (a) ruthenium metal center(s), have an electron count of 16 or 18 and are penta- or hexa-coordinated. A further object of the invention is a process for the manufacture of atocopheryl alkanoates comprising this reaction.

    Abstract translation: 本发明涉及一种制备4-烷酰氧基-2,3,5-三甲基苯基（E / Z） - 萜醚的方法，通过1-烷酰氧基的链烯基醚的交错复分解反应制备α-生育酚链烷酸酯的前体 -2,3,6-三甲基氢醌与2,6,10,14-四甲基十五碳烯或植醇衍生物，例如 酯，醚或甲硅烷基醚，在交叉复分解催化剂存在下进行。 由于交叉分析催化剂特别是钌金属卡宾配合物，其具有（a）钌金属中心，具有16或18的电子数，并且是五元或六配位的。 本发明的另一个目的是制备包含该反应的链烷酸生育基酯的方法。

    Method of producing phenol compound
    5.
    发明授权
    Method of producing phenol compound 有权
    生产酚类化合物的方法

    公开(公告)号：US06187964B1

    公开(公告)日：2001-02-13

    申请号：US09353311

    申请日：1999-07-14

    Applicant: Kazuo Tanaka ,  Yukio Sakai ,  Yasuhiro Shoji ,  Takafumi Yoshimura ,  Masatoshi Yoshimura

    Inventor： Kazuo Tanaka ,  Yukio Sakai ,  Yasuhiro Shoji ,  Takafumi Yoshimura ,  Masatoshi Yoshimura

    IPC: C07C3700

    CPC classification number: C07C51/255 ,  C07C37/0555 ,  C07C51/285 ,  C07C67/39 ,  C07C67/54 ,  C07C63/04 ,  C07C69/017 ,  C07C69/07 ,  C07C39/07

    Abstract: A method of producing a phenol compound comprising a step of oxidizing an aromatic aldehyde to an aryl formate and an aromatic carboxylic acid with an oxygen-containing gas, and a step of decomposing the aryl formate to the phenol compound. To facilitate the separation of the aryl formate and the unreacted aromatic aldehyde, a mixture of the aryl formate and the unreacted aromatic aldehyde is recycled to the oxidation process to concentrate the aryl formate in the oxidation mixture. Alternatively, the oxidation process is carried out in an organic solvent having substantially no ability of dissolving water to increase the conversion of the aromatic aldehyde and the selectivity of the aryl formate, thereby producing the aryl formate in a high yield. In another method, the aryl formate is produced by oxidizing the aromatic aldehyde in the organic solvent having substantially no ability of dissolving water with performic acid generated in situ in the reaction system from the reaction between formic acid and hydrogen peroxide. Since the oxidation proceeds in the organic solvent, hydrogen peroxide in aqueous phase contact the aromatic aldehyde. This significantly reduces the amount of explosive cyclic perther and a high-boiling product.

    Abstract translation: 一种生产酚化合物的方法，包括用含氧气体将芳族醛氧化为芳基甲酸酯和芳族羧酸的步骤，以及将芳基甲酸酯分解成酚化合物的步骤。 为了促进甲酸芳基酯和未反应的芳族醛的分离，将甲酸芳基酯和未反应的芳族醛的混合物循环到氧化过程中以将甲酸芳基酯浓缩在氧化混合物中。 或者，氧化方法在基本上没有溶解水的能力的有机溶剂中进行，以增加芳族醛的转化率和甲酸芳基酯的选择性，从而以高产率生产甲酸芳基酯。 在另一种方法中，通过氧化芳族醛在有机溶剂中氧化芳族醛，通过在反应体系中原位产生的甲酸与甲酸和过氧化氢之间的反应基本上不溶解水的能力来进行氧化。 由于在有机溶剂中进行氧化，水相中的过氧化氢与芳族醛接触。 这显着地减少了爆炸性环状花药和高沸点产物的量。

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