Electrochemical trifluoromethylation of olefins; Product-selectivity and mechanistic aspects
作者:Kenji Uneyama
DOI:10.1016/s0040-4020(01)87045-9
日期:——
Trifluoroacetic acid (TFA) can be converted almost quantitatively to the trifluoromethyl radicals by electrochemical oxidation of TFA. The electrolysis is conducted in an MeCN-H2O-(Pt) system using an undivided cell. The electrochemically generated CF3·radicals can attack mostly electron-deficient olefins leading to the trifluoromethylated carbon radicals of which chemical and electrochemical fate can be controlled
三氟乙酸(TFA)可以通过TFA的电化学氧化几乎定量地转化为三氟甲基。电解是在MeCN-H 2 O-(Pt)系统中使用未分割的电池进行的。电化学产生的CF 3 ·自由基可以攻击大多数电子不足的烯烃,从而导致三氟甲基化的碳自由基,其化学和电化学性质可以通过电流密度,反应温度和烯烃的取代基来控制。