Methods for synthesizing phosphonate reagents and retinoids
    85.
    发明授权
    Methods for synthesizing phosphonate reagents and retinoids 失效
    合成膦酸酯试剂和类视色素的方法

    公开(公告)号:US5061819A

    公开(公告)日:1991-10-29

    申请号:US475347

    申请日:1990-02-05

    申请人: James H. Babler

    发明人: James H. Babler

    摘要: Processes for synthesizing novel phosphonate diester compounds of the general formula ##STR1## are disclosed and claimed. The claimed process includes forming a reaction mixture of a C-14 aldehyde and a methylene-bis-phosphonic acid ester, separating a pentadienyl phosphonic acid dialkyl ester intermediate from the reaction mixture, optionally isomerizing the intermediate in the presence of a basic catalyst, and isolating the desired pentadienylphosphonic acid dialkyl ester compound. The isolated phosphonate compounds made according to the processes of the present invention may be employed in synthesizing retinoids such as retinoic acid or carotenoids such as beta-carotene.

    摘要翻译: 公开和要求保护通式为“IMAGE”的新型膦酸二酯化合物的方法。 要求保护的方法包括形成C-14醛和亚甲基双膦酸酯的反应混合物,从反应混合物中分离戊二烯基膦酸二烷基酯中间体,任选地在碱性催化剂存在下异构化中间体,和 分离所需的戊二烯基膦酸二烷基酯化合物。 根据本发明方法制备的分离的膦酸酯化合物可用于合成类视黄醇如视黄酸或类胡萝卜素如β-胡萝卜素。