Nickel‐Catalyzed Direct Trifluoroethylation of Aryl Iodides with 1,1,1‐Trifluoro‐2‐Iodoethane via Reductive Coupling
作者:Han Li、Jie Sheng、Guang‐Xu Liao、Bing‐Bing Wu、Hui‐Qi Ni、Yan Li、Xi‐Sheng Wang
DOI:10.1002/adsc.202000985
日期:2020.12.8
CF3CH2I has been developed, demonstrating high efficiency, excellent functional‐group compatibility, especially with large sterically hindered groups. The key to success is the combination of nickel with readily available nitrogen and phosphine ligands. The powerful potential of this strategy is further demonstrated by the late‐stage modification of several derived bioactive molecules.
Highly electrophilic aryl(2,2,2-trifluoroethyl)iodonium triflates have been used for the first time as trifluoroethyl and aryl transfer reagents in Pd-catalyzed functionalization of arylboronic acids. Electron-rich arylboronic acids reacted with aryl(2,2,2-trifluoroethyl)iodonium triflates (2a–b) in CH3CN in the presence of Pd2(dba)3 and K3PO4 at room temperature to provide trifluoroethyl arenes in
Alkylations of Arylboronic Acids including Difluoroethylation/Trifluoroethylation<i>via</i>Nickel-Catalyzed Suzuki Cross-Coupling Reaction
作者:Xiaofei Zhang、Chunhao Yang
DOI:10.1002/adsc.201500346
日期:2015.8.24
An efficient alkylation method of functionalized alkyl halides under mild nickel‐catalyzed C(sp3)C(sp2) Suzuki cross‐coupling conditions is described. The features of this approach are excellent functional group compatibility, low cost nickel catalyst, and the use of a mild base. This is also the first successful example of the nickel‐catalyzed direct 2,2‐difluoroethylation or 2,2,2‐trifluoroethylation