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    PROCESS FOR PRODUCING 1,2-DIALKOXY-3-FLUOROBENZENE
    8.
    发明公开
    PROCESS FOR PRODUCING 1,2-DIALKOXY-3-FLUOROBENZENE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON 1,2-DIALKOXY-3-FLUORBENZOL

    公开(公告)号：EP2055692A1

    公开(公告)日：2009-05-06

    申请号：EP06783042.2

    申请日：2006-08-25

    申请人： Asahi Glass Co., Ltd. ,  Charna Chemicals Ltd.

    发明人： QIU, Mingjian, c/o Charna Chemicals Ltd. ,  ZHANG, Wei, c/o Charna Chemicals Ltd. ,  CHEN, Zhaohui, c/o Charna Chemicals Ltd. ,  ZHANG, Chunshan, c/o Charna Chemicals Ltd. ,  ZHANG, Yali, c/o Charna Chemicals Ltd.

    IPC分类号： C07C37/62 ,  C07C39/26 ,  C07C41/09 ,  C07C41/26 ,  C07C43/225 ,  C07C43/23

    CPC分类号： C07C41/16 ,  C07C37/00 ,  C07C37/02 ,  C07C41/01 ,  C07C41/26 ,  C07C43/23 ,  C07C39/27 ,  C07C43/225 ,  C07C39/245

    摘要： The present invention relates to a process for producing a 2-fluoro-6-halophenol as an intermediate; a process for producing a 2-alkoxy-3-fluorophenol and further a 1,2-dialkoxy-3-fluorobenzene from the 2-fluoro-6-halophenol; a second process for producing a 1,2-dialkoxy-3-fluorobenzene from the 2-fluoro-6-halophenol; and a 2-alkoxy-3-fluorophenol. The 2-fluoro-6-halophenol can be obtained using a 2-fluorophenol as a starting material and through a sulfonation reaction, a halogenation reaction, and a deprotection reaction. The 2-fluoro-6-halophenol is alkyl-etherified, and subsequently the halogen atom is converted into a hydroxyl group to obtain the 2-alkoxy-3-fluorophenol, which is further alkyl-etherified to thereby obtain the 1,2-dialkoxy-3-fluorobenzene. Alternatively, a 1,2-dialkoxy-3-fluorobenzene is also obtained by converting the halogen atom of the 2-fluoro-6-halophenol into a hydroxyl group to thereby form 3-fluorocatechol and subsequently alkyl-etherifying two hydroxyl groups thereof. The processes of the invention realize low production costs and high process yields, and thus are suitable for industrial production of a 1,2-dialkoxy-3-fluorobenzene.

    摘要翻译： 本发明涉及作为中间体的2-氟-6-卤代苯酚的制备方法。 从2-氟-6-卤苯酚制备2-烷氧基-3-氟苯酚和1,2-二烷氧基-3-氟苯的方法; 用于从2-氟-6-卤代苯酚生产1,2-二烷氧基-3-氟苯的第二种方法; 和2-烷氧基-3-氟苯酚。 2-氟-6-卤代苯酚可以使用2-氟苯酚作为原料，通过磺化反应，卤化反应和脱保护反应得到。 2-氟-6-卤代苯酚被烷基醚化，随后将卤素原子转化为羟基，得到2-烷氧基-3-氟苯酚，进一步进行烷基醚化，从而得到1,2-二烷氧基 -3-氟苯。 或者，也可以通过将2-氟-6-卤代苯酚的卤素原子转化为羟基，从而形成3-氟邻苯二酚，然后将其两个羟基烷基醚化，得到1,2-二烷氧基-3-氟苯。 本发明方法生产成本低，工艺成品率高，适用于1,2-二烷氧基-3-氟苯的工业化生产。

    VERFAHREN ZUR HYDRODEHALOGENIERUNG VON HALOGENIERTEN META-KRESOLEN
    10.
    发明公开
    VERFAHREN ZUR HYDRODEHALOGENIERUNG VON HALOGENIERTEN META-KRESOLEN 审中-公开
    方法hydrodehalogenating卤代间甲酚

    公开(公告)号：EP1697288A1

    公开(公告)日：2006-09-06

    申请号：EP04803570.3

    申请日：2004-12-07

    申请人： LANXESS Deutschland GmbH

    发明人： PIES, Michael ,  SCHÖNAUER, Klaus ,  HASSMANN, Volker ,  UHR, Hermann

    IPC分类号： C07C37/00 ,  C07C39/07

    CPC分类号： C07C37/00 ,  C07C39/07

    摘要： The invention relates to a method for hydrodehalogenating halogenated meta-cresols of formula (I), wherein the radicals R1 to R4 have the meaning indicated in the description. Said method is characterized in that halogenated meta-cresols of formula (I) are contacted with a catalyst along with water at temperatures ranging between 100 and 250 °C, said catalyst being produced by applying one or several palladium salts and/or platinum salts and optional copper salts onto an aluminum oxide carrier material or titanium dioxide carrier material.