Diverse Synthesis of Chiral Trifluoromethylated Alkanes via Nickel‐Catalyzed Asymmetric Reductive Cross‐Coupling Fluoroalkylation
作者:Yue Min、Jie Sheng、Jian‐Liang Yu、Shan‐Xiu Ni、Guobin Ma、Hegui Gong、Xi‐Sheng Wang
DOI:10.1002/anie.202101076
日期:2021.4.26
drug candidates containing chiral trifluoromethyl‐bearing carbons are still few due to the lack of efficient methods for the asymmetric introduction of trifluoromethyl group into organic molecules. Herein, we described a nickel‐catalyzed asymmetric trifluoroalkylation of aryl iodides, for the first time, by utilizing reductive cross‐coupling in enantioselective fluoroalkylation. This novel method has demonstrated
Dual Nickel- and Photoredox-Catalyzed Reductive Cross-Coupling to Access Chiral Trifluoromethylated Alkanes
作者:Pan Zhou、Xinxuan Li、Dong Wang、Tao XU
DOI:10.1021/acs.orglett.1c01420
日期:2021.6.18
A dual nickel/photoredox-catalyzed enantioselective reductive cross-coupling of arylhalides with CF3-substituted racemic alkylelectrophiles has been established. The approach accommodates a broad palette of aryl iodides and alkyl bromides to access a variety of chiral CF3-containing compounds. The exceptionally mild conditions (visible light, ambient temperature, no strong base) and no need for Grignard
Here, we report a nickel-catalyzed enantioconvergent hydroalkylation of olefins with trifluoromethyl-containing α-alkyl halides for the synthesis of enantioenriched trifluoromethylated alkanes. This reaction employs readily available and bench-stable alkenes as alkyl coupling partners, featuring mild conditions, a broad substrate scope, and high functional group tolerance. The synthetic utility of
Palladium-catalyzed Heck-type reaction of secondary trifluoromethylated alkyl bromides
作者:Tao Fan、Wei-Dong Meng、Xingang Zhang
DOI:10.3762/bjoc.13.258
日期:——
palladium-catalyzed Heck-type reaction of secondary trifluoromethylated alkylbromides has been developed. The reaction proceeds under mild reaction conditions with high efficiency and excellent functional group tolerance, even towards formyl and hydroxy groups. Preliminary mechanistic studies reveal that a secondary trifluoromethylated alkyl radical is involved in the reaction.
Nickel-Catalyzed Enantioconvergent and Diastereoselective Allenylation of Alkyl Electrophiles: Simultaneous Control of Central and Axial Chirality
作者:Asik Hossain、Robert L. Anderson、Claudia S. Zhang、Peng-Jui Chen、Gregory C. Fu
DOI:10.1021/jacs.4c00593
日期:2024.3.20
In recent years, remarkable progress has been described in the development of methods that simultaneously control vicinal stereochemistry, wherein both stereochemical elements are central chirality; in contrast, methods that control central and axial chirality are comparatively rare. Herein we report that a chiral nickel catalyst achieves the enantioconvergent and diastereoselective coupling of racemic