Preparation of 3-carboalkoxy or 3-alkanoyl furans
    2.
    发明授权
    Preparation of 3-carboalkoxy or 3-alkanoyl furans 失效
    3-烷酰氧基或3-烷酰基呋喃的制备

    公开(公告)号:US4025537A

    公开(公告)日:1977-05-24

    申请号:US584712

    申请日:1975-06-09

    IPC分类号: C07D307/46 C07D307/68

    CPC分类号: C07D307/68 C07D307/46

    摘要: A large group of derivatives of 3-furoic acid and 3-furyl ketones can be prepared in high yield by a process which consists of reacting an .alpha.,.beta.-unsaturated ketone having either an .alpha.-carboalkoxy or .alpha.-acyl group with N-bromosuccinimide and thermally cyclizing the resulting bromine containing intermediate.

    摘要翻译: 通过一种方法可以高产率制备大量的3-糠酸和3-呋喃酮的衍生物,该方法由具有α-碳代烷氧基或α-酰基的α,β-不饱和酮与N-溴代琥珀酰亚胺 并使得到的含溴中间体热环化。