Highly Selective Trifluoromethylation of 1,3-Disubstituted Arenes through Iridium-Catalyzed Arene Borylation
作者:Tianfei Liu、Xinxin Shao、Yaming Wu、Qilong Shen
DOI:10.1002/anie.201106673
日期:2012.1.9
The old one two: A sequential iridium‐catalyzedborylation and copper‐catalyzed trifluoromethylation of arenes is described (see scheme; Pin=pinacol). The reaction is conducted under mild reaction conditions and tolerates a variety of functional groups. The advantages of this tandem procedure are demonstrated by the late‐stage trifluoromethylation of a number of biologically active molecules.
A General Strategy for the Perfluoroalkylation of Arenes and Arylbromides by Using Arylboronate Esters and [(phen)CuRF]
作者:Nichole D. Litvinas、Patrick S. Fier、John F. Hartwig
DOI:10.1002/anie.201106668
日期:2012.1.9
method for the synthesis of aryl perfluoroalkanes from arenes and aryl bromides is described. Substituted arenes or aryl bromides are converted in situ to an aryl boronate ester that readily undergoes perfluoroalkylation in air with [(phen)CuRF]. A broad range of aryl bromide substrates were perfluoroalkylated in good yield for the first time. [(phen)CuCF3] is now commercially available and has been prepared
描述了一种从芳烃和芳基溴化物合成芳基全氟烷烃的通用方法。取代的芳烃或芳基溴化物在原位转化为芳基硼酸酯,该芳基硼酸酯易于在空气中与 [(phen)CuR F ]进行全氟烷基化。广泛的芳基溴底物首次以良好的产率全氟烷基化。[(phen)CuCF 3 ] 现在可商购并已以 20 g 的规模制备。