A Fully Automated Continuous-Flow Platform for Fluorescence Quenching Studies and Stern-Volmer Analysis
作者:Koen P. L. Kuijpers、Cecilia Bottecchia、Dario Cambié、Koen Drummen、Niels J. König、Timothy Noël
DOI:10.1002/anie.201805632
日期:2018.8.27
report the first fully automated continuous‐flow platform for fluorescencequenching studies and Stern–Volmer analysis. All the components of the platform were automated and controlled by a self‐written Python script. A user‐friendly software allows even inexperienced operators to perform automated screening of novel quenchers or Stern–Volmer analysis, thus accelerating and facilitating both reaction
Visible-light Promoted Atom Transfer Radical Addition−Elimination (ATRE) Reaction for the Synthesis of Fluoroalkylated Alkenes Using DMA as Electron-donor
作者:Wen-Wen Xu、Le Wang、Ting Mao、Jiwei Gu、Xiao-Fei Li、Chun-Yang He
DOI:10.3390/molecules25030508
日期:——
Here, we describe a mild, catalyst-free and operationally-simple strategy for the direct fluoroalkylation of olefins driven by the photochemical activity of an electron donor−acceptor (EDA) complex between DMA and fluoroalkyl iodides. The significant advantages of this photochemical transformation are high efficiency, excellent functional group tolerance, and synthetic simplicity, thus providing a
Copper-Catalyzed C–H Difluoroalkylations and Perfluoroalkylations of Alkenes and (Hetero)arenes
作者:Xiaoyang Wang、Shuang Zhao、Jing Liu、Dingsheng Zhu、Minjie Guo、Xiangyang Tang、Guangwei Wang
DOI:10.1021/acs.orglett.7b01712
日期:2017.8.18
A general and facile syntheticmethod for C(sp2)–H difluoroalkylations and perfluoroalkylations of alkenes and (hetero)arenes with commercially available fluoroalkyl halides has been developed with a copper-amine catalyst system. This method is characterized by high yields, mild reaction conditions, low-cost catalyst, broad substrate scope, and excellent functional group compatibility, therefore providing
By taking advantage of dimethyl sulfoxide (DMSO) as an oxidant, the photoredox‐catalyzedalkene oxydifluoroalkylation for formal C(sp3)−CF2R and C(sp2)=O formation is disclosed for the first time. This difunctionalization reaction employs readily available styrenes as the substrates and bromodifluoro compounds as the difluoroalkylating reagents, which can afford the difluorinated ketones in acceptable