Copper-Catalyzed Regioselective Borylfluoromethylation of Alkenes
作者:Nuo-Yi Wu、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1021/acscatal.9b01530
日期:2019.6.7
A copper-catalyzed borylfluoromethylation of alkenes with fluoromethyl iodide and diboron reagents was disclosed. This protocol afforded the previously unknown and synthetically useful borylfluoromethylated alkanes in good yields and excellent regioselectivity. Its synthetic application was illustrated through the derivatization of organoboron products and preparation of monofluorinated ibuprofen.
作者:Chetan C. Chintawar、Amit K. Yadav、Nitin T. Patil
DOI:10.1002/anie.202002141
日期:2020.7.13
Herein, we disclose the gold‐catalyzed 1,2‐diarylation of alkenes through the interplay of ligand‐enabled AuI/AuIII catalysis with the idiosyncratic π‐activation mode of gold complexes. Unlike the classical migratory‐insertion‐based approach to 1,2‐diarylation, the present approach not only circumvents the formation of direct Ar−Ar′ coupling and Heck‐type side products but more intriguingly demonstrates
本文中,我们通过配体使能的Au I / Au III催化与金配合物的特质π活化模式的相互作用揭示了金的烯烃1,2-二芳基化反应。与经典的基于迁移插入的方法进行1,2-二芳基化不同,本方法不仅规避了直接Ar-Ar'偶联和Heck型副产物的形成,而且更有趣地证明了其反应性和选择性与先前已知的互补金属催化(Pd,Ni或Cu)。对机理进行详细研究的结果表明,由于芳基烯烃具有非清白的性质,芳基碘化物向Au I络合物的氧化加成是限速步骤。
Trifluoromethylthiolative 1,2-difunctionalization of alkenes with diselenides and AgSCF<sub>3</sub>
作者:Perumal Saravanan、Pazhamalai Anbarasan
DOI:10.1039/c9cc00815b
日期:——
via trifluoromethylthiolation has been accomplished employing diaryl diselenide and AgSCF3 in the presence of BF3·OEt2. Various substituted 1,2-dichalcogenated products having the SCF3 moiety were synthesized in good to excellent yields under mild conditions. The preliminary mechanistic investigation revealed the possible reaction pathway and unique combination of diselenide and AgSCF3 for successful
Synthesis of <i>trans</i>-Tetrafluoro(trifluoromethyl)-λ<sup>6</sup>-sulfanyl (CF<sub>3</sub>SF<sub>4</sub>)-Containing Olefins via Cross Metathesis
作者:Muqian Deng、Max Wilde、John T. Welch
DOI:10.1021/acs.joc.3c01177
日期:2023.8.4
The cross-metathesisreactions of trans-tetrafluoro(trifluoromethyl)-λ6-sulfanyl (CF3SF4)-containing olefins expand the repertoire of synthetic transformations of CF3SF4-substituted molecules. Treatment of a primary alkene and 3-CF3SF4–propene with a second-generation Hoveyda–Grubbs catalyst yielded the cross-metathesis product in good yield under very mild conditions (room temperature). CF3SF4–propene
含反式四氟(三氟甲基)-λ 6 -硫烷基(CF 3 SF 4 )的烯烃的交叉复分解反应扩展了CF 3 SF 4取代分子的合成转化的范围。用第二代Hoveyda-Grubbs催化剂处理伯烯烃和3-CF 3 SF 4 -丙烯,在非常温和的条件(室温)下以良好的产率产生了交叉复分解产物。CF 3 SF 4 –丙烯在室温或二氯甲烷回流下与含有吸电子基团或给电子基团的底物进行交叉复分解。描述了 CF 3 SF 4 -丙烯同型二聚体的形成以及该二聚体进行选择性交叉复分解反应的用途。