Process for preparation of cyclododecanone
    1.
    发明授权
    Process for preparation of cyclododecanone 失效
    环十二酮的制备方法

    公开(公告)号:US06861563B2

    公开(公告)日:2005-03-01

    申请号:US10486735

    申请日:2002-08-09

    IPC分类号: C07C45/58 C07C45/67

    CPC分类号: C07C45/58 C07C49/413

    摘要: In the process for producing a cyclododecanone by isomerizing an epoxycyclododecane-containing starting material in the presence of an isomerization reaction catalyst containing lithium bromide and/or lithium iodide, in order to perform the reaction with high efficiency (high reaction rate) and high selectivity and stably produce a high-purity cyclododecanone in industry while maintaining a high-level reaction rate, the epoxycyclododecane-containing starting material is produced by contacting an epoxycyclododecadiene with hydrogen in the presence of a hydrogen-reduction catalyst and has a content of the hydroxyl group-containing cyclododecane compounds contained in the epoxycyclododecane-containing starting material controlled to 5 mol % or less.

    摘要翻译: 在通过在含有溴化锂和/或碘化锂的异构化反应催化剂的存在下异构化含环氧环十二烷的原料来制备环十二酮的方法中,为了以高效率(高反应速率)和高选择性进行反应,以及 在保持高反应速率的同时稳定地生产高纯度环十二烷酮,含环氧环十二烷的原料是通过在氢还原催化剂存在下使环氧环十二烷与氢接触而制得的, 含有环氧十二烷的原料中含有的环十二烷化合物控制在5摩尔%以下。

    Method and producing cyclododecanone compound
    4.
    发明授权
    Method and producing cyclododecanone compound 有权
    方法生产环十二酮化合物

    公开(公告)号:US06388140B2

    公开(公告)日:2002-05-14

    申请号:US09783921

    申请日:2001-02-15

    IPC分类号: C07C4500

    CPC分类号: C07C45/58

    摘要: A cyclododecanone compound is produced in a high reaction rate, with a high conversion of the starting compound, and with a high selectivity to and a high yield of the target compound by isomerizing an epoxycyclododecane compound in the presence of a catalyst comprising lithium bromide and/or lithium iodide, without using a solvent or in a non-polar solvent, in an inert gas atmosphere, while substantially no polymeric compounds having a high boiling temperature is produced.

    摘要翻译: 以高反应速率,起始化合物的高转化率,以及通过使环氧环十二烷化合物在包含溴化锂和/或其混合物的催化剂存在下异构化,以高选择性和高产率的方式制备环十二烷酮化合物, 或碘化锂,而不使用溶剂或在非极性溶剂中,在惰性气体气氛中,而基本上不产生具有高沸点温度的聚合物。

    Preparation of diaryl carbonate
    5.
    发明授权
    Preparation of diaryl carbonate 失效
    碳酸二芳基酯的制备

    公开(公告)号:US5792883A

    公开(公告)日:1998-08-11

    申请号:US944251

    申请日:1997-10-06

    IPC分类号: C07C68/00

    CPC分类号: C07C68/00

    摘要: An improved process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation utilizes a reaction vessel composed of two or more reaction chambers which are connected in series. The process is composed of the steps of continuously introducing the diaryl oxalate and an organic phosphorus compound having a trivalent or pentavalent phosphorus atom and at least one carbon-phosphorus bonding into the first chamber and continuously recovering a reaction mixture mainly containing the diaryl carbonate from the last chamber under the condition that a mixture of the diaryl oxalate and the organic phosphorus compound is heated in the reaction chambers, while discharging carbon monoxide released from the mixture.

    摘要翻译: 通过脱羰由液相中草酸二芳基酯制备碳酸二芳基酯的改进方法利用由串联连接的两个或更多个反应室组成的反应容器。 该方法包括以下步骤:将草酸二芳基酯和具有三价或五价磷原子和至少一个碳 - 磷键合的有机磷化合物连续引入第一室中,连续地从主要含有碳酸二芳基酯的反应混合物中回收 在反应室中加热草酸二芳基酯和有机磷化合物的混合物同时排放从混合物中释出的一氧化碳的条件下,最后一个室。