Process for preparing betaines
    1.
    发明授权
    Process for preparing betaines 失效
    制备甜菜碱的方法

    公开(公告)号:US06624327B1

    公开(公告)日:2003-09-23

    申请号:US10048876

    申请日:2002-05-02

    IPC分类号: C07C22900

    CPC分类号: C07C227/02 C07C229/12

    摘要: The invention relates to a process for preparing betaines of formula (I) wherein R1 represents a C1-C24 hydrocarbon group, and R2 and R3 independently represent a C1-C3 hydrocarbon group, comprising reacting an aqueous solution of an ethoxylated quaternay ammonium compound of formula (II) wherein R1, R2, and R3 have the same meaning as described above and X− represents a suitable anion, with oxygen or an oxygen-containing gas under alkaline conditions in the presence of a supported and promoted Pt catalyst at a temperature ranging from room temperature to 70° C. Preferably, use is made of a Pt/Bi/C catalyst. The invention process is particularly suitable for converting choline chloride into betaine, which is used as an animal feed

    摘要翻译: 本发明涉及一种制备式(I)的甜菜碱的方法,其中R 1表示C 1 -C 24烃基,R 2和R 3独立地代表C 1 -C 3烃基,其包括使水 式(II)的乙氧基化季铵化合物的溶液,其中R 1,R 2和R 3具有与上述相同的含义,X 1代表适合的阴离子,与氧或氧 在负载和促进的Pt催化剂存在下,在碱性条件下,在室温至70℃的温度范围内,优选使用Pt / Bi / C催化剂。 本发明方法特别适用于将氯化胆碱转化为甜菜碱,其用作动物饲料