作者:Yufei Li、Xin Liang、Kaikai Niu、Jun Gu、Fang Liu、Qing Xia、Qingmin Wang、Weihua Zhang
DOI:10.1021/acs.orglett.2c02150
日期:2022.8.19
, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated. Triflic anhydride (Tf2O), being inexpensive and readily available, was chosen as the radical trifluoromethyl source. Thianthrene was used as a recyclable Tf2O-activating reagent, and a high-yielding and scalable trifluoromethylation reaction was achieved. Density functional theory and mechanistic
已经证明了一种有吸引力的、多功能的、操作简单的、可见光诱导的、无过渡金属、无光催化剂和无氧化剂的三氟甲基化。三氟甲磺酸酐 (Tf 2 O) 便宜且容易获得,被选为自由基三氟甲基源。噻蒽被用作可回收的 Tf 2 O 活化剂,实现了高产和可扩展的三氟甲基化反应。密度泛函理论和机理研究表明,可见光激发的自由基均裂过程参与了该反应,产生了关键的三氟甲基自由基中间体。