The reaction of fluoro-olefins (I) with hexafluoroacetone cyanohydrin (II) catalyzed by Et3N gives fluorinated 3-iminotetrahydrofurans (III), whose structures have been confirmed by spectral methods and various chemical transformations. A mechanism for the formation of products III is suggested including nucleophilic addition of an O-anion to a CC bond followed by intramolecular cyclization in the
Et 3 N催化的氟代烯烃(I)与六氟丙酮氰醇(II)的反应生成了氟化的3-亚氨基四氢呋喃(III),其结构已通过光谱法和各种化学转化得到了证实。提出了产物Ⅲ的形成机理,包括向C additionC键亲核加成O-阴离子,然后在中间的C-阴离子中通过CN基团进行分子内环化。
Electrochemical synthesis of sulfones based on arylperfluoroalkyliodonium salts