| 摘要 |
<CHEM> (wherein R<1>, R<2>, R<3>, R<4> and R<5> 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; R<17> represents trifluoromethyl or the like; R<18>, R<19>, R<20>, R<21> and R<22> 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.
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