Process for the preparation of 2-perfluoropropoxy-perfluoropropionyl
fluoride
    16.
    发明授权
    Process for the preparation of 2-perfluoropropoxy-perfluoropropionyl fluoride 失效
    制备2-全氟丙氧基 - 全氟丙酰氟的方法

    公开(公告)号:US4729856A

    公开(公告)日:1988-03-08

    申请号:US864841

    申请日:1986-05-20

    CPC分类号: C07C51/58

    摘要: Process for the preparation of 2-perfluoropropoxy-perfluoropropionyl fluoride by dimerization of hexafluoropropene epoxide in aprotic polar medium, in the presence of N,N,N',N'-tetrasubstituted diaminodifluoromethane as catalyst, characterized in that the dimerization reaction is carried out in the presence of a co-catalyst constituted by a nitrogenous organic base having structure of aniline, or of pyridine, or of a derivative thereof, wherein the nitrogen atom is not linked to hydrogen atoms and, in the case of the pyridine-type structure, it is sterically hindered by substituent groups on ortho-position relatively to it.

    摘要翻译: 在N,N,N',N'-四取代二氨基二氟甲烷作催化剂存在下,通过在非质子极性介质中二聚六氟丙烯环氧化物制备2-全氟丙氧基 - 全氟丙酰氟的方法,其特征在于二聚反应 存在由具有苯胺结构的含氮有机碱或吡啶或其衍生物构成的助催化剂,其中氮原子不与氢原子连接,并且在吡啶型结构的情况下, 它相对于邻位的取代基被空间位阻。