Process for producing vitamin A aldehyde and intermediate for producing the same
    3.
    发明授权
    Process for producing vitamin A aldehyde and intermediate for producing the same 失效
    生产维生素A醛的方法及其制备方法

    公开(公告)号:US06444857B1

    公开(公告)日:2002-09-03

    申请号:US09684922

    申请日:2000-10-10

    IPC分类号: C07C4500

    摘要: There are disclosed an alcohol derivative of formula (1): wherein Ar is an optionally substituted aryl group and R is a straight or branched C1-C3 lower alkyl group, and the wavy line depicted by indicates a single bond and stereochemistry relating to a double bond bound therewith is E or Z or a mixture thereof, and a process for producing the same and a process for producing Vitamin A aldehyde using the same.

    摘要翻译: 公开了式(1)的醇衍生物:其中Ar是任选取代的芳基,R是直链或支链C 1 -C 3低级烷基,并且所描绘的波浪线表示单键和与双键相关的立体化学 与其结合的是E或Z或其混合物,及其制备方法和使用其制备维生素A醛的方法。

    Process for preparation of allyl sulfone derivatives and intermediates for the preparation
    4.
    发明授权
    Process for preparation of allyl sulfone derivatives and intermediates for the preparation 失效
    制备烯丙基砜衍生物及制备中间体的方法

    公开(公告)号:US06806387B2

    公开(公告)日:2004-10-19

    申请号:US10250306

    申请日:2003-06-30

    IPC分类号: C07C31500

    摘要: The present invention relates to a process for producing an allyl sulfone derivative represented by the formula (3): wherein Ar is an optionally substituted aryl group, and the corrugated line means either one of E/Z geometrical isomers, or a mixture thereof, which is an intermediate for producing vitamin A, which process is characterized by reacting an aryl sulfinic acid or a salt thereof represented by the formula (2): ArSO2M  (2) wherein Ar is as defined above, and M is hydrogen atom, sodium atom or potassium atom, with an allyl halide derivative represented by the formula (1): wherein X is a halogen atom, and Ar and the corrugated line are as defined above.

    摘要翻译: 本发明涉及一种制备式(3)表示的烯丙基砜衍生物的方法:其中Ar是任选取代的芳基,波纹线是指E / Z几何异构体之一或其混合物,其中 是制备维生素A的中间体,该方法的特征在于使由式(2)表示的芳基亚磺酸或其盐:其中Ar如上定义,M是氢原子,钠原子或钾原子,与 由式(1)表示的烯丙基卤衍生物:其中X是卤素原子,Ar和波纹线如上所定义。

    Dihalo-compound and process for producing vitamin A derivative
    8.
    发明授权
    Dihalo-compound and process for producing vitamin A derivative 失效
    二卤化合物和生产维生素A衍生物的方法

    公开(公告)号:US06388124B2

    公开(公告)日:2002-05-14

    申请号:US09769527

    申请日:2001-01-26

    IPC分类号: C07C6962

    摘要: There is disclosed a dihalo-compound of formula (1): wherein X1 and X2 represent different halogen atoms, R represents a hydrogen atom or a protective group for a hydroxyl group, and a process for producing vitamin A derivative via a sulfone derivative of formula (5): wherein Ar represents an optionally substituted aryl group, and R represents the same as defined above.

    摘要翻译: 公开了式(1)的二卤化合物:其中X1和X2表示不同的卤素原子,R表示氢原子或羟基的保护基,以及通过式(1)的砜衍生物生产维生素A衍生物的方法 5):其中Ar表示任选取代的芳基,R表示与上述相同的含义。