Polyene compounds
    3.
    发明授权
    Polyene compounds 失效
    聚烯烃化合物

    公开(公告)号:US3742038A

    公开(公告)日:1973-06-26

    申请号:US3742038D

    申请日:1971-01-14

    Abstract: Conjugated polyene dialdehyde compounds having 14-44 carbon atoms and mixtures thereof which are useful as coloring agents for foodstuffs, pharmaceutical preparations and cosmetic preparations and a method for preparing these dialdehydes including various intermediates in this method. This method is carried out by reacting a phosphonium salt of a conjugated aliphatic olefine having a terminal aldehyde radical with a conjugated aliphatic olefine having a terminal acetal linkage radical and a terminal aldehyde radical and thereafter hydrolyzing the reaction product to produce the dialdehyde. This dialdehyde may be further chain lengthened by reacting this dialdehyde with a phosphonium salt of a conjugated olefine having a terminal aldehyde radical, or by reacting with a vinyl ether or propenyl ether.

    Abstract translation: 具有14-44个碳原子的共轭多烯二醛化合物及其混合物,其可用作食品着色剂,药物制剂和化妆品制剂,以及在该方法中包括各种中间体的这些二醛的制备方法。 该方法通过使具有末端醛基的共轭脂族烯烃的鏻盐与具有末端缩醛连接基和末端醛基的共轭脂族烯烃反应,然后水解反应产物以产生二醛。 该二醛可以通过使该二醛与具有末端醛基的共轭烯烃的鏻盐反应或通过与乙烯基醚或丙烯基醚反应而进一步链延长。

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