Practical, Cost-Effective Synthesis of Chloromethylated 1, 4-Benzoquinones
    31.
    发明申请
    Practical, Cost-Effective Synthesis of Chloromethylated 1, 4-Benzoquinones 审中-公开
    氯甲基化1,4-苯醌的实用,经济有效的合成

    公开(公告)号:US20080039642A1

    公开(公告)日:2008-02-14

    申请号:US11575749

    申请日:2005-09-17

    IPC分类号: C07C50/28

    CPC分类号: C07C46/00 C07C46/08 C07C50/28

    摘要: The present invention relates to a practical and cost-effective method for the synthesis of 5-chloromethylated 2,3-dialkoxy-6-alkyl-1,4-benzoquinones by direct chloromethylation of the corresponding 2,3-dialkoxy-6-alkyl-1,4-benzoquinones. The invention further relates to a method for the preparation of 5-chloromethylated 2,3-dialkoxy-6-alkyl-1,4-benzoquinones starting from a 3,4,5-trialkoxy-1-alkyl-benzene. The invention also relates to a method for the production of Coenzymes Qn, especially coenzyme Q10.

    摘要翻译: 本发明涉及通过相应的2,3-二烷氧基-6-烷基-1,4-苯醌的直接氯甲基化合成5-氯甲基化2,3-二烷氧基-6-烷基-1,4-苯醌的实用和成本有效的方法。 1,4-苯醌。 本发明还涉及从3,4,5-三烷氧基-1-烷基 - 苯开始制备5-氯甲基化2,3-二烷氧基-6-烷基-1,4-苯醌的方法。 本发明还涉及生产辅酶Q 1,特别是辅酶Q 10的方法。

    Process for preparing polyenedialdehyde monoacetals
    32.
    发明授权
    Process for preparing polyenedialdehyde monoacetals 失效
    制备多烯醛单缩醛的方法

    公开(公告)号:US07045641B2

    公开(公告)日:2006-05-16

    申请号:US10336827

    申请日:2003-01-06

    摘要: A process for preparing compounds of the formula I is described and entails converting a compound of the formula II by Wittig or Wittig-Horner reaction into a compound of the formula IV, where appropriate converting the compound of the formula IV by hydrolysis of the acetal function and Wittig or Wittig-Horner reaction into a compound of the formula VI and converting the compound of the formula IV or VI in two stages into the compound of the formula I. The radicals R1, R2 and R6 and k have the meaning indicated in the description. Novel intermediates are also described.

    摘要翻译: 描述了制备式I化合物的方法,并且需要通过Wittig或Wittig-Horner反应将式II化合物转化为式IV化合物,其中适当的方法是通过水解缩醛官能团转化式IV化合物 和Wittig或Wittig-Horner反应转化为式VI的化合物,并将式IV或VI的化合物分两步转化为式I的化合物。基团R 1,R 0 > 2 和R 6和k具有说明书中指出的含义。 还描述了新的中间体。

    Method for producing carotenoids
    38.
    发明授权
    Method for producing carotenoids 失效
    生产类胡萝卜素的方法

    公开(公告)号:US07378558B2

    公开(公告)日:2008-05-27

    申请号:US10532207

    申请日:2003-11-17

    摘要: A process for preparing carotenoids, in which the process includes reacting a dialkoxy dialdehyde in a double Wittig condensation with a phosphonium salt of or in a double Wittig-Horner condensation with a phosphonate. The carotenoids include, for example, β-carotene, zeaxanthin, canthaxanthin, astaxathin, lycopene and croceptin, which are useful as nutraceuticals, food colorants, and feed additives.

    摘要翻译: 一种制备类胡萝卜素的方法,其中该方法包括使双维t嗪缩合中的二烷氧基二醛与双维维特 - 霍纳缩合的鏻盐与膦酸酯反应。 类胡萝卜素包括例如β-胡萝卜素,玉米黄质,角黄素,虾青素,番茄红素和croceptin,其可用作营养制品,食品着色剂和饲料添加剂。

    Method for Producing 2,7-Dimethyl-Octa-2,4,6-Trienedial
    39.
    发明申请
    Method for Producing 2,7-Dimethyl-Octa-2,4,6-Trienedial 有权
    2,7-二甲基 - 八甲基-2,4,6-三烯酸的生产方法

    公开(公告)号:US20070244344A1

    公开(公告)日:2007-10-18

    申请号:US10588683

    申请日:2005-02-04

    IPC分类号: C07C45/45

    摘要: The present invention relates to an improved process for preparing 2,7-dimethylocta-2,4,6-trienedial of the formula I, by a) double enol ether condensation of a butenedial bisacetal of the formula II with an enol ether of the formula III,  in the presence of a Lewis acid catalyst to give a condensation product of the formula IV,  where the radicals R1 and R2 in formulae II to IV are independently of one another C1-C6-alkyl; b) hydrolysis of the acetal groups of IV by adding an aqueous acid to form the dialdehyde of the formula V; d) crystallization of I from the reaction mixture, Wherein process steps a) to d) are carried out in the presence of an inert, water-immiscible organic solvent.

    摘要翻译: 本发明涉及通过以下方式制备式I的2,7-二甲基辛-2,4,6-三烯酸的改进方法:a)式Ⅱ的丁二醛双缩醛与式II的烯醇醚的双烯醇醚缩合 III,在路易斯酸催化剂的存在下,得到式IV的缩合产物,其中式II至IV中的基团R 1和R 2与式 另一个C 1 -C 6 - 烷基; b)通过加入酸水溶液来水解IV的缩醛基以形成式V的二醛; d)从反应混合物中结晶I,其中方法步骤a)至d)在惰性的与水不混溶的有机溶剂的存在下进行。

    Method for the production of phytofluene

    公开(公告)号:US20070004925A1

    公开(公告)日:2007-01-04

    申请号:US10595503

    申请日:2004-10-15

    IPC分类号: C07D319/06

    摘要: The invention relates to a process for preparing phytofluene of the formula I, where a) a phosphonium salt of the formula II is condensed with an aldehyde of the formula III  in a Wittig reaction to give an acetal of the formula IV b) the condensation product of the formula IV is subjected to an acid-catalyzed acetal hydrolysis to give the aldehyde of the formula V c) and V is condensed in a further Wittig reaction with a phosphonium salt of the formula VI to give phytofluene  where the radicals R1, R2 and R7, and X− and Y− have the meaning sated in the description.