申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP1553082A1
公开(公告)日:2005-07-13
(wherein R1, R2, R3, R4 and R5 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkoxy, or the like; R17 represents trifluoromethyl or the like; R18, R19, R20, R21 and R22 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like).
An easy and simple process for producing a vinyl perfluoroalkanesulfonate derivative represented by general formula (IV) which is a useful intermediate in synthesis of medicines, natural products, or the like, at a low cost, is provided. The process is characterized by, for example, reacting a carbonyl compound represented by general formula (I) described above with a perfluoroalkanesulfonic anhydride represented by general formula (II) described above in the presence of a pyridine derivative represented by general formula (III) described above in an amount of 0.1 to 1.0 equivalent to the perfluoroalkanesulfonic anhydride.
(其中 R1、R2、R3、R4 和 R5 可以相同或不同,各自代表氢原子、取代或未取代的低级烷基、取代或未取代的低级烷氧基或类似物;R17 代表三氟甲基或类似物;R18、R19、R20、R21 和 R22 可以相同或不同,各自代表氢原子、取代或未取代的低级烷基或类似物)。
本发明提供了一种以低成本生产通式(IV)代表的乙烯基全氟烷基磺酸酯衍生物的简便工艺,该衍生物是合成药物、天然产品或类似产品的有用中间体。该工艺的特点是,例如,在上述通式(I)代表的吡啶衍生物存在下,将上述通式(I)代表的羰基化合物与上述通式(II)代表的全氟烷磺酸酐反应,反应物的量为 0.1 至 1.0 个全氟烷磺酸酐当量。