Preparation of enol ethers
    1.
    发明授权
    Preparation of enol ethers 失效
    烯醇醚的制备

    公开(公告)号:US06504064B1

    公开(公告)日:2003-01-07

    申请号:US09884969

    申请日:2001-06-21

    IPC分类号: C07C4106

    CPC分类号: C07C41/08 C07C43/16

    摘要: Enol ethers of the formula (I) where R1 to R3 are each, independently of one another, hydrogen or a carbon-containing organic radical and R4 is an unsubstituted or substituted alkyl radical, are prepared by reacting alcohols of the formula (II) R4—OH  (II), with alkynes of the formula (IlIa), alkadienes of the formula (IIIb) R1—C≡C—CHR2R3  (IIIa), R1—CH═C═CR2R3  (IIIb) or mixtures thereof, where R1 to R4 are as defined above, in the presence of an alkali metal alkoxide and a polar, aprotic solvent.

    摘要翻译: 其中R 1至R 3各自独立地为氢或含碳有机基团且R 4为未取代或取代的烷基的式(I)的烯醇醚通过使式(II)的醇与 在碱金属醇盐和极性非质子溶剂的存在下,式(IIIa)的炔,式(IIIb)的链二烯或其混合物,其中R 1至R 4如上定义。