Phosphonium Ylide-Mediated Programmable Fluorination to Access Mono- and Difluoromethylarenes
作者:Yu Zheng、Zhen-Zhen Xie、Xian-Chen He、Yan-Shan Chen、Wen-Shuo Cheng、Kai Chen、Hao-Yue Xiang、Xiao-Qing Chen、Hua Yang
DOI:10.1021/acs.orglett.1c00457
日期:2021.4.2
Compounds bearing fluorinated moieties are pervasive in a wide range of pharmaceuticals and agrochemicals. The installation of fluorinated units is a persistently vital task in synthetic chemistry, where facile and manipulable assays are highly demanding. Herein, we establish a general and programmable fluorination strategy for the modular assembly of mono- and difluoromethylarenes through the controllable
Nickel-catalyzed monofluoromethylation of (hetero)aryl bromides <i>via</i> reductive cross-coupling
作者:Han Yin、Jie Sheng、Kai-Fan Zhang、Zi-Qi Zhang、Kang-Jie Bian、Xi-Sheng Wang
DOI:10.1039/c9cc03737c
日期:——
A mild and efficient nickel-catalyzed direct monofluoromethylation of (hetero)aryl bromides by reductive cross-coupling has been developed. This method exhibits good efficiency, wide functional-group compatibility, and suitability for aryl and heteroaryl bromides with abundant industrial raw material BrCH2F. This strategy provides an efficient way to synthesize monofluoromethylated molecules for drug
Facile Access to Fluoromethylated Arenes by Nickel-Catalyzed Cross-Coupling between Arylboronic Acids and Fluoromethyl Bromide
作者:Lun An、Yu-Lan Xiao、Qiao-Qiao Min、Xingang Zhang
DOI:10.1002/anie.201502882
日期:2015.7.27
The nickel‐catalyzed fluoromethylation of arylboronic acids was achieved with the industrial raw material fluoromethyl bromide (CH2FBr) as the coupling partner. The reaction proceeded under mild reaction conditions with high efficiency; it features the use of a low‐cost nickel catalyst, synthetic simplicity, and excellent functional‐group compatibility, and provides facile access to fluoromethylated
[IPrH][F(HF)2], making it an excellent reagent for the fluorination of various organic substrates. The scope of substrates includes benzyl bromides, iodides, chlorides, aliphatic halides, tosylates, mesylates, α-haloketones, a silyl chloride, acyl and sulfuryl chlorides, and a nitroarene. The exceptional stability of the air-stable and nonhygroscopic [IPrH][F(HF)2] reagent is illustrated by its convenient