Electrophilic trifluoromethylation of arenes and N-heteroarenes using hypervalent iodine reagents
作者:Matthias S. Wiehn、Ekaterina V. Vinogradova、Antonio Togni
DOI:10.1016/j.jfluchem.2010.06.020
日期:2010.9
The reaction of hypervalent iodine trifluoromethylating reagents with a variety of arenes and N-heteroarenes gives access to the corresponding trifluoromethylated compounds. In comparative studies, 1-trifluoromethyl-1,3-dihydro-3,3-dimethyl-1,2-benziodoxole (2) proved to be the superior to 1-trifluoromethyl-1,2-benziodoxol-3-(1H)-one (1) for the direct aromatic trifluoromethylation. Depending on the
高价碘三氟甲基化试剂与各种芳烃和N-杂芳烃的反应可得到相应的三氟甲基化化合物。在比较研究中,1-三氟甲基-1,3-二氢-3,3-二甲基-1,2-苯并恶唑(2)被证明优于1-三氟甲基-1,2-苯并恶唑-3-(1 H) -一个(1)用于直接芳族三氟甲基化。取决于各个底物,事实证明诸如双(三氟甲基磺酰基)酰亚胺锌或三(三甲基甲硅烷基)甲硅烷基氯的添加剂有助于促进反应。在氮杂环的情况下,观察到在与氮相邻的位置引入三氟甲基的明显趋势。