Process for producing 2-vinylcyclododecanone
    1.
    发明授权
    Process for producing 2-vinylcyclododecanone 失效
    2-乙烯基环十二酮的制备方法

    公开(公告)号:US06548711B2

    公开(公告)日:2003-04-15

    申请号:US09876231

    申请日:2001-06-08

    IPC分类号: C07C49607

    CPC分类号: C07C45/67 C07C49/647

    摘要: A process for producing 2-vinylcyclododecanone, the process comprising isomerizing 2-ethylidenecyclododecanone represented by the following formula (1): wherein the wavy line signifies that the double bond is a Z-isomer, an E-isomer or a mixture of an E-isomer and a Z-isomer; in the presence of a catalyst and separating 2-vinylcyclododecanone represented by the following formula (2) from the reaction product by fractionation:

    摘要翻译: 一种生产2-乙烯基环十二酮的方法,该方法包括由下式(1)表示的2-亚乙基环十二烷异构化:其中波浪线表示双键是Z-异构体,E-异构体或E- 异构体和Z-异构体; 在催化剂的存在下,通过分馏从反应产物中分离出由下式(2)表示的2-乙烯基环十二烷:

    Process for producing aromatic amines
    7.
    发明授权
    Process for producing aromatic amines 失效
    生产芳香胺的方法

    公开(公告)号:US06365776B1

    公开(公告)日:2002-04-02

    申请号:US09946468

    申请日:2001-09-06

    IPC分类号: C07C21100

    CPC分类号: C07C209/10 C07C211/54

    摘要: The present invention provides an activator in arylamination using a palladium compound as a catalyst, which is superior to conventional phosphines in stability and performance. With the phosphine sulfide as an activator, an arylamination reaction achieves improved selectivity to produce a desired aromatic amine in an obviously increased yield as compared with a reaction using the corresponding phosphine compound. Moreover, the phosphine sulfide of the invention is impervious to oxidation and exists stably in air and therefore sufficiently withstands use on an industrial scale.

    摘要翻译: 本发明提供使用钯化合物作为催化剂的芳基化活化剂,其在稳定性和性能方面优于常规膦。 与使用相应的膦化合物的反应相比,以硫化氢作为活化剂,芳基化反应实现了以明显增加的产率产生所需芳族胺的选择性。 此外,本发明的硫化膦不能氧化,在空气中稳定地存在,因此能够充分地耐受工业规模的使用。