Copper-Mediated Trifluoromethylation of Heteroaromatic Compounds by Trifluoromethyl Sulfonium Salts
作者:Cheng-Pan Zhang、Zong-Ling Wang、Qing-Yun Chen、Chun-Tao Zhang、Yu-Cheng Gu、Ji-Chang Xiao
DOI:10.1002/anie.201006823
日期:2011.2.18
Copper is king! A convenient method for the synthesis of trifluoromethylated heteroaromatic compounds under mild conditions has been developed based on the observation that 1 can be reduced by certain metals (see scheme). Substrate 1 is assumed to be reduced by copper via a single‐electron transfer mechanism, and CuCF3 is the most probable intermediate in this reaction. DMF=N,N‐dimethylformamide, Tf=triflate
铜为王!基于观察到某些金属可以还原1的现象,开发了一种在温和条件下合成三氟甲基化杂芳族化合物的简便方法(参见方案)。假设通过单电子转移机理将底物1还原为铜,而CuCF 3是该反应中最可能的中间体。DMF = N,N-二甲基甲酰胺,Tf =三氟甲磺酸。