Powerful, Thermally Stable, One-Pot-Preparable, and Recyclable Electrophilic Trifluoromethylating Agents: 2,8-Difluoro- and 2,3,7,8-Tetrafluoro-<i>S</i>-(trifluoromethyl)dibenzothiophenium SaltsTeruo Umemoto, Yuanqiang Li, Tianhao Zhu et al.|The Journal of Organic Chemistry|2017Cited by 82