Process for the preparation of imidazolidine-2, 4-diones
    9.
    发明授权
    Process for the preparation of imidazolidine-2, 4-diones 失效
    咪唑烷-2,4-二酮的制备方法

    公开(公告)号:US06235910B1

    公开(公告)日:2001-05-22

    申请号:US09400311

    申请日:1999-09-21

    IPC分类号: C07D23340

    CPC分类号: C07D233/74

    摘要: A process for the preparation of compounds of the general formula (I) by reacting an aldehyde compound of the general formula (II) with a urea compound of the general formula (III) in the presence of carbon monoxide and a catalytically active metal compound. Compounds of the general formula (I) are important intermediates for the synthesis of &agr;-amino acids.

    摘要翻译: 在一氧化碳和催化活性金属化合物的存在下使通式(II)的醛化合物与通式(III)的脲化合物反应制备通式(I)的化合物的方法。 通式(I)的化合物是合成α-氨基酸的重要中间体。