PERFLUOROALKYLATION OF AROMATIC COMPOUNDS WITH R<sub>f</sub>I(Ph)OSO<sub>2</sub>CF<sub>3</sub>
作者:Teruo Umemoto、Yuriko Kuriu、Hideo Shuyama
DOI:10.1246/cl.1981.1663
日期:1981.12.5
Perfluoroalkylation of various aromaticcompounds with perfluoroalkylphenyliodonium trifluoromethanesulfonate (FITS) under mild conditions was described. The reactivity of other perfluoroalkyliodonium salts was also examined.
The electrochemical trifluoromethylation and perfluoroalkylation of aromatic compounds mediated by a vitaminB12derivative as a cobalt-based catalyst has been developed. The Co(I) species of a vitaminB12derivative, prepared by controlled-potential electrolysis at −0.8 V vs. Ag/AgCl in methanol, reacted with RfI (Rf = CF3, n-C3F7, n-C4F9, n-C8F17, and n-C10F21) to form a Co–Rf complex. This complex
已经开发了由维生素B 12衍生物作为钴基催化剂介导的芳香族化合物的电化学三氟甲基化和全氟烷基化。维生素B 12衍生物的Co(I)物种是通过在甲醇中于-0.8 V相对于Ag / AgCl的受控电势电解制备的,与R f I(R f = CF 3,n -C 3 F 7,n -C 4 F 9,n -C 8 F 17和n -C 10 F 21)形成Co-R f络合物。该复合物在可见光照射下释放出一个R f基团,然后通过未反应的(杂)芳烃直接与CH官能团直接反应,形成所需的氟代烷基化分子。据我们所知,这是天然来源的维生素B 12催化三价甲基化和芳族化合物作为钴介导的催化剂的全氟烷基化的首次报道。