Trifluoromethyl Thianthrenium Triflate: A Readily Available Trifluoromethylating Reagent with Formal CF<sub>3</sub><sup>+</sup>, CF<sub>3</sub><sup>•</sup>, and CF<sub>3</sub><sup>–</sup> Reactivity
作者:Hao Jia、Andreas P. Häring、Florian Berger、Li Zhang、Tobias Ritter
DOI:10.1021/jacs.1c02606
日期:2021.5.26
thianthrenium triflate (TT-CF3+OTf–) as a novel trifluoromethylating reagent, which is conveniently accessible in a single step from thianthrene and triflicanhydride. We demonstrate the use of TT-CF3+OTf– in electrophilic, radical, and nucleophilic trifluoromethylation reactions.
elaboration of trifluoromethyl-substituted vinyl sulfone by palladium-catalyzed amination is performed. These trifluoromethyl-substituted vinyl sulfones are further evaluated for several assays against different tumor cells and the antitumor mechanism in cytotoxic autophagy induced by PI3K/Akt/mTOR signal is investigated.
α‐Thianthrenium Carbonyl Species: The Equivalent of an α‐Carbonyl Carbocation
作者:Hao Jia、Tobias Ritter
DOI:10.1002/anie.202208978
日期:2022.9.26
We report α-thianthrenium carbonyl species as α-carbonyl carbocation equivalents, generated in situ by radical conjugate addition of trifluoromethyl radical to Michael acceptors. The method can obtain Cα-tetrasubstituted amino acids in 90 seconds.
, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated. Triflicanhydride (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。
[EN] A TRIFLUOROMETHYL THIANTHRENIUM COMPOUND, PROCESS FOR PREPARING THE SAME AND THE USE THEREOF<br/>[FR] COMPOSÉ DE TRIFLUOROMÉTHYL THIANTHRÉNIUM, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2022219003A1
公开(公告)日:2022-10-20
The present inventions refers a novel trifluoromethyl thianthrenium compound referred to as TT-CF3+X–, a process for preparing the same and the use thereof for trifluoromethylating organic compounds.