NEW INTERMEDIATES FOR THE VITAMIN A AND -CAROTENE SYNTHESIS
    2.
    发明公开
    NEW INTERMEDIATES FOR THE VITAMIN A AND -CAROTENE SYNTHESIS 有权
    NEUE ZWISCHENPRODUKTEFÜRDIE维生素A-UND KAROTINSYNTHESE

    公开(公告)号:EP2723713A1

    公开(公告)日:2014-04-30

    申请号:EP12728478.4

    申请日:2012-06-14

    Abstract: The present invention relates to compounds of formula (I) wherein R1 signifies a C1-C15 alkyl moiety or a C2 to C18 alkenyl moiety, to their process of production as well as to their use in organic synthesis, especially as intermediates (building blocks) in the synthesis of vitamin A or &bgr;-carotene or derivatives thereof, or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin, preferably vitamin A.

    Abstract translation: 本发明涉及其中R1表示C1-C15烷基部分或C2至C18烯基部分的式(I)化合物,其生产方法以及它们在有机合成中的用途,特别是作为中间体(构建单元) 在合成维生素A或其中的β-胡萝卜素或其衍生物或其他类胡萝卜素时, 角黄素,虾青素或玉米黄质,优选维生素A.

    VERFAHREN ZUR REDUKTION VON ALKINVERBINDUNGEN

    公开(公告)号:EP1794119A1

    公开(公告)日:2007-06-13

    申请号:EP05785744.3

    申请日:2005-09-08

    CPC classification number: C07C403/24 C07C403/08 C07C2601/16

    Abstract: The invention relates to a method for producing cyclohexene derivatives of general formulae (I) or (II), by reducing alkine compounds of general formulae (III) or (IV), with a mixture of zinc and at least one ammonium salt of formula (V) as a reducing agent. In said formulae, the substituents R1 to R8 independently have the designation cited in the description. Said method is characterised in that the reducing agent contains between 0.3 and 0.49 mol of at least one ammonium salt of formula (V) per zinc mol.

    Abstract translation: 本发明涉及通过用锌和至少一种式V的铵盐作为还原剂的混合物还原通式III或IV的炔化合物来制备通式I或II的环己烯衍生物的方法,其中 取代基R 1至R 8彼此独立地具有本说明书中规定的含义,其中还原剂包含0.3至0.49mol的至少一种铵盐 式V每摩尔锌。

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