Copper-Mediated Aerobic Oxidative Trifluoromethylation of Terminal Alkynes with Me<sub>3</sub>SiCF<sub>3</sub>
作者:Lingling Chu、Feng-Ling Qing
DOI:10.1021/ja102175w
日期:2010.6.2
An efficient copper-mediated trifluoromethylation of terminalalkynes with nucleophilic trifluoromethylating reagent (Me(3)SiCF(3)) was developed. Both aromatic alkynes and aliphatic alkynes were effective, and a variety of functionalities such as amino, -OMe, -CO(2)Et, -Br, and -NO(2) were tolerated under the reaction conditions. This reaction provides a general, straightforward, and practically useful
Two practical and complementary methods are reported for the synthesis of trifluoromethylated alkynes. The first one, a mix‐and‐stir process, is based on the oxidative trifluoromethylation of readily available and bench‐stable copper acetylides while the second one, which displays a broad substrate scope and has several advantages over existing procedures, is based on the oxidativecopper‐catalyzed
Copper-Catalyzed Oxidative Trifluoromethylation of Terminal Alkynes and Aryl Boronic Acids Using (Trifluoromethyl)trimethylsilane
作者:Xueliang Jiang、Lingling Chu、Feng-Ling Qing
DOI:10.1021/jo202566h
日期:2012.2.3
copper-mediated oxidative trifluomethylation of terminalalkynes and aryl boronic acids. This method allows a wide range of functional group tolerant trifluoromethylated acetylenes and arenes to be easily prepared. After the preliminary mechanistic studies of the oxidativetrifluoromethylation of terminalalkyne, an efficient copper-catalyzed oxidativetrifluoromethylation of terminalalkynes and aryl boronic
The first organocopper(III) fluoride, [PPh4][CuIII(CF3)3F] (2), has been isolated and authenticated. Despite its stability, 2 reacts with alkynylsilanes leading to industrially relevant trifluoromethylalkynes (RC≡CCF3). Mechanistic investigations, including the trapping of [PPh4][CuIII(CF3)3(C≡CPh)] (4a), validates the operability of a CuI/CuIII redox shuttle in oxidative C−C couplings occurring through
第一种氟化有机铜(III) [PPh 4 ][Cu III (CF 3 ) 3 F] ( 2 ) 已被分离和鉴定。尽管具有稳定性, 2仍会与炔基硅烷发生反应,生成工业相关的三氟甲基炔烃 (RC≡CCF 3 )。机理研究,包括捕获 [PPh 4 ][Cu III (CF 3 ) 3 (CQICPh)] ( 4 a ),验证了 Cu I /Cu III氧化还原穿梭在氧化 C−C 偶联中的可操作性迄今为止难以捉摸的有机铜(III)氟化物。